CHRISTIAAN ALLART LIGTENBERG
Pilots at Buckland Ave, San Carlos, CA

License number
California A4130056
Issued Date
Jun 2016
Expiration Date
Jun 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
1007 Buckland Ave, San Carlos, CA 94070

Personal information

See more information about CHRISTIAAN ALLART LIGTENBERG at radaris.com
Name
Address
Phone
Christiaan A Ligtenberg, age 57
800 Loyola Dr, Los Altos, CA 94024
(650) 948-8294

Professional information

Christiaan Ligtenberg Photo 1

Eyewear With Exchangeable Temples Housing Bluetooth Enabled Apparatus

US Patent:
2004000, Jan 1, 2004
Filed:
Jun 27, 2003
Appl. No.:
10/608321
Inventors:
Gregory Swab - Tulsa OK, US
James Malackowski - Chicago IL, US
Mikal Greaves - Mountain View CA, US
Rolf Milesi - Sunnyvale CA, US
Christiaan Ligtenberg - San Carlos CA, US
Thomas Meier - San Jose CA, US
Assignee:
Q.R. Spex, Inc. - Tulsa OK
International Classification:
B29C031/00
US Classification:
264/001700, 264/272110
Abstract:
A wireless ad hoc pico network is formed by eyewear and other devices such as a computer, a bracelet and a telephone having similar transceivers mounted on them. Master slave relationships are configurable. Other devices, such as a radio, a CD player, a hand held global positioning satellite system and a heart rate monitor, having similar transceivers, can also be connected with the transceiver of the eyewear. The transceivers operate on globally available, unlicensed radio band, 2.45 gigahertz (GHz) and conforms to the Bluetooth standard. The power consumption of Bluetooth enabled devices is less than three percent of the power consumption of a mobile phone. The eyewear includes a frame and connected to the frame are two temples. Temples are connected to frame via hinges. Temples have a male portion of a connector incorporated in them. Female portion of the connector is made integral with the hinges. When the male portion is inserted in the female portion the temple is attached to the frame. The temples can be removed by pulling the connector apart, and a temple with different apparatus within it can be inserted in place of the removed temples. The temple may have co-molded within its body, an apparatus such as an audio device, a camera, a speaker, and a microphone, and a display device such as liquid crystal or an alarm. In another embodiment, eyewear constitutes a distance alarm to monitor the movement of, for example, a child. A device in form of, for example, a bracelet is worn by the child. The transceivers in the eyewear and the bracelet form a small-range wireless network, i.e., piconet, wherein the eyewear and the bracelet communicate using signals conforming to the Bluetooth technology. The transceiver in the eyewear is configured to generate an alarm when the bracelet exceeds a predetermined distance from eyewear.


Christiaan Ligtenberg Photo 2

Eyewear With Exchangeable Temples Housing Bluetooth Enabled Apparatus

US Patent:
2004002, Feb 12, 2004
Filed:
Jul 1, 2003
Appl. No.:
10/611125
Inventors:
Gregory Swab - Tulsa OK, US
James Malackowski - Chicago IL, US
Mikal Greaves - Mountain View CA, US
Rolf Milesi - Sunnyvale CA, US
Christiaan Ligtenberg - San Carlos CA, US
Thomas Meier - San Jose CA, US
Assignee:
Q.R. Spex, Inc. - Tulsa OK
International Classification:
H04M001/00
US Classification:
455/426100, 455/550100, 455/556100
Abstract:
A wireless ad hoc pico network is formed by eyewear and other devices such as a computer, a bracelet and a telephone having similar transceivers mounted on them. Master slave relationships are configurable. Other devices, such as a radio, a CD player, a hand held global positioning satellite system and a heart rate monitor, having similar transceivers, can also be connected with the transceiver of the eyewear. The transceivers operate on globally available, unlicensed radio band, 2.45 gigahertz (GHz) and conforms to the Bluetooth standard. The power consumption of Bluetooth enabled devices is less than three percent of the power consumption of a mobile phone. The eyewear includes a frame and connected to the frame are two temples. Temples are connected to frame via hinges. Temples have a male portion of a connector incorporated in them. Female portion of the connector is made integral with the hinges. When the male portion is inserted in the female portion the temple is attached to the frame. The temples can be removed by pulling the connector apart, and a temple with different apparatus within it can be inserted in place of the removed temples. The temple may have co-molded within its body, an apparatus such as an audio device, a camera, a speaker, and a microphone, and a display device such as liquid crystal or an alarm. In another embodiment, eyewear constitutes a distance alarm to monitor the movement of, for example, a child. A device in form of, for example, a bracelet is worn by the child. The transceivers in the eyewear and the bracelet form a small-range wireless network, i.e., piconet, wherein the eyewear and the bracelet communicate using signals conforming to the Bluetooth technology. The transceiver in the eyewear is configured to generate an alarm when the bracelet exceeds a predetermined distance from eyewear.


Christiaan Ligtenberg Photo 3

Mass Storage Device With Elastomeric Material And Related Portable Computing Device And Method

US Patent:
2013032, Dec 12, 2013
Filed:
Jun 8, 2012
Appl. No.:
13/492786
Inventors:
Eric A. Knopf - Mountain View CA, US
John M. BROCK - San Francisco CA, US
Robert L. Coish - Mountain View CA, US
Christiaan A. Ligtenberg - San Carlos CA, US
Ron A. Hopkinson - Campbell CA, US
Assignee:
Apple Inc. - Cupertino CA
International Classification:
G06F 1/16, G11B 5/84, B32B 37/12
US Classification:
36167936, 156293, 36167931, 2960301
Abstract:
Absorbers for a mass storage device are provided. The absorbers may be configured to protect the mass storage device from drop events and reduce the transmission of vibrations from and/or to the mass storage device. Additionally, the absorbers may occupy a smaller amount of space than traditional snubber mounting arrangements. The absorbers may include major surface absorbers formed from a first elastomeric material that engage major surfaces of the mass storage device. Corner absorbers formed from a second elastomeric material may engage the corners of the mass storage device and the side walls of a compartment in a case. The major surface absorbers and the corner absorbers may distribute and absorb load applied during a drop event. A related portable computing device and a related method are also provided.


Christiaan Ligtenberg Photo 4

Cooling System For Electronic Devices Utilizing Fluid Flow And Agitation

US Patent:
7092254, Aug 15, 2006
Filed:
Aug 6, 2004
Appl. No.:
10/913255
Inventors:
Eric Monsef - Los Gatos CA, US
Christiaan Ligtenberg - San Carlos CA, US
Zach Zeliff - San Jose CA, US
Ihab A. Ali - San Jose CA, US
Assignee:
Apple Computer, Inc. - Cupertino CA
International Classification:
H05K 7/20
US Classification:
361699, 257714, 174 151, 165 804
Abstract:
A cooling system, the system comprises a housing having an inlet and an outlet, a liquid to be flown from the inlet into the housing and out of outlet to exit the housing. The housing further has an interior portion for an electronic device to reside therein and a vibration transducer coupling to the housing. The liquid is flown across the electronic device to dissipate heat from the electronic device. The vibration transducer causes turbulent or agitation in the liquid as the liquid is flown across the electronic device.


Christiaan Ligtenberg Photo 5

Optimized Vent Walls In Electronic Devices

US Patent:
2013032, Dec 12, 2013
Filed:
Sep 26, 2012
Appl. No.:
13/627231
Inventors:
Bartley K. Andre - Menlo Park CA, US
Jeremy D. Bataillou - San Francisco CA, US
Jay S. Nigen - Mountain View CA, US
Christiaan A. Ligtenberg - San Carlos CA, US
Ron A. Hopkinson - Campbell CA, US
Charles A. Schwalbach - Menlo Park CA, US
Matthew P. Casebolt - Fremont CA, US
Nicholas A. Rundle - San Jose CA, US
Frank F. Liang - San Jose CA, US
Assignee:
APPLE INC. - Cupertino CA
International Classification:
H05K 7/20, H05K 13/00, B29C 47/88, G06F 1/20
US Classification:
165120, 361692, 36167946, 361701, 361695, 361700, 295921
Abstract:
The disclosed embodiments related to a component for use in a portable electronic device. The component includes a wall of the portable electronic device, containing an intake zone that includes a set of intake vents directed at a first angle toward one or more heat-generating components of the portable electronic device. The wall also includes an exhaust zone containing a set of exhaust vents directed at a second angle out of the portable electronic device.


Christiaan Ligtenberg Photo 6

Internal Components Of A Portable Computing Device

US Patent:
2013032, Dec 12, 2013
Filed:
Jun 8, 2012
Appl. No.:
13/492789
Inventors:
Brett W. Degner - Menlo Park CA, US
Christiaan A. Ligtenberg - San Carlos CA, US
Ron A. Hopkinson - Campbell CA, US
Patrick Kessler - San Francisco CA, US
Bradley J. Hamel - Sunnyvale CA, US
Dinesh C. Mathew - Fremont CA, US
John M. Brock - San Francisco CA, US
Keith J. Hendren - San Francisco CA, US
Peteris K. Augenbergs - San Francisco CA, US
Joss N. Giddings - San Francisco CA, US
Matthew C. Waldon - San Francisco CA, US
Cina Hazegh - San Jose CA, US
Matthew P. Casebolt - Fremont CA, US
Charles A. Schwalbach - Menlo Park CA, US
Brandon S. Smith - Mountain View CA, US
William F. Leggett - San Francisco CA, US
Gavin J. Reid - Campbell CA, US
Tom Tate - San Jose CA, US
Gary Thomason - Boulder Creek CA, US
Assignee:
Apple Inc. - Cupertino CA
International Classification:
G06F 1/16, H01Q 1/52, H05K 7/00, H05K 1/11, H01L 27/146, G06F 1/20
US Classification:
343841, 36167902, 2502081, 36167952, 36167926, 174261
Abstract:
The present application describes various embodiments of systems and methods for providing internal components for portable computing devices having a thin profile. More particularly, the present application describes internal components configured to fit within a relatively thin outer enclosure.


Christiaan Ligtenberg Photo 7

Eyewear With A Mounted Radio Frequency Transceiver

US Patent:
7331666, Feb 19, 2008
Filed:
May 4, 2005
Appl. No.:
11/121544
Inventors:
Gregory Swab - Tulsa OK, US
James E. Malackowski - Chicago IL, US
Mikal Greaves - Mountain View CA, US
Rolf Milesi - Sunnyvale CA, US
Christiaan Ligtenberg - San Carlos CA, US
Thomas Meier - San Jose CA, US
Assignee:
Q.R. Spex, Inc. - Tulsa OK
International Classification:
H04B 1/38, H04M 1/00
US Classification:
351 41, 455 903, 4555691, 4555752
Abstract:
An eyewear having a frame, at least one temple attached to the frame, and a radio frequency transceiver for short-distance wireless communication. The radio frequency transceiver is mounted on either the frame or the temple and is configured to form an ad hoc wireless network with a plurality of devices. The radio frequency transceiver communicates with these devices within a frequency band of 2. 45 gigahertz (GHz).


Christiaan Ligtenberg Photo 8

Keyboard Backlight Features For A Portable Computer

US Patent:
2013032, Dec 12, 2013
Filed:
Jun 8, 2012
Appl. No.:
13/492801
Inventors:
Ryan P. Brooks - Los Altos CA, US
Robert S. Murphy - Sunnyvale CA, US
John M. Brock - San Francisco CA, US
Christiaan A. Ligtenberg - San Carlos CA, US
Charles A. Schwalbach - Menlo Park CA, US
International Classification:
G06F 3/02
US Classification:
345170
Abstract:
The present application describes various embodiments of systems and methods for internal components for portable computing devices relating to keyboard components and keyboard backlighting. In one embodiment, a keyboard module can include a rectangular light guide panel and a driver board including discrete light sources mounted on the driver board where the driver board is disposed along one edge of the light guide panel and light emitted for the discrete light sources is captured by the light guide panel and distributed to predetermined locations.


Christiaan Ligtenberg Photo 9

Portable Computing Device

US Patent:
8616748, Dec 31, 2013
Filed:
Jun 8, 2012
Appl. No.:
13/492701
Inventors:
Brett W. Degner - Menlo Park CA, US
Christiaan A. Ligtenberg - San Carlos CA, US
Ron A. Hopkinson - Campbell CA, US
Bartley K. Andre - Menlo Park CA, US
Jeremy Bataillou - San Francisco CA, US
Jay S Nigen - Mountain View CA, US
Matthew S. Theobald - San Francisco CA, US
Matthew P. Casebolt - Fremont CA, US
Charles A. Schwalbach - Menlo Park CA, US
Brandon S. Smith - Mountain View CA, US
William F. Leggett - San Francisco CA, US
Assignee:
Apple Inc. - Cupertino CA
International Classification:
F21V 7/04
US Classification:
362602, 36167902
Abstract:
The present application describes various embodiments regarding systems and methods for providing a lightweight and durable portable computing device having a thin profile. The portable computing device can take the form of a laptop computer. The laptop computer can include a uni-body top case having an integrated support system formed therein, the integrated support system providing structural support that distributes applied loads through the top case preventing warping and bowing.


Christiaan Ligtenberg Photo 10

Battery Structure And Integration

US Patent:
2013032, Dec 12, 2013
Filed:
Sep 26, 2012
Appl. No.:
13/627944
Inventors:
Brett W. Degner - Menlo Park CA, US
Robert S. Murphy - Sunnyvale CA, US
Christiaan A. Ligtenberg - San Carlos CA, US
Matthew P. Casebolt - Fremont CA, US
Peter M. Arnold - Cupertino CA, US
Eric A. Knopf - Mountain View CA, US
Assignee:
APPLE INC. - Cupertino CA
International Classification:
G06F 1/16, H05K 13/00
US Classification:
36167909, 36167901, 29825
Abstract:
A portable electronic device is described. This portable electronic device includes an external housing with a cavity defined by an edge. A keyboard, having a front surface and a back surface, is disposed in the cavity with the front surface facing the external housing. Moreover, a tray is disposed over the back surface of the keyboard, and is mechanically coupled to the external housing adjacent to the edge. Furthermore, battery cells are mechanically coupled to an opposite side of the tray from the back surface of the keyboard. The tray may allow the battery cells to be removed from the portable electronic device without damaging the keyboard. In addition, the tray may increase the compression strength and/or the bending strength of the portable electronic device.