Robert Thomas Croswell
Engineering at Northway Dr, Hanover Park, IL

License number
Louisiana EI.0015622
Issued Date
Jun 21, 1994
Expiration Date
Sep 30, 2002
Category
Civil Engineer
Address
Address
7915 Northway Dr, Hanover Park, IL 60133

Professional information

Robert Croswell Photo 1

Integration Of Monocrystalline Oxide Devices With Fully Depleted Cmos On Non-Silicon Substrates

US Patent:
6638872, Oct 28, 2003
Filed:
Sep 26, 2002
Appl. No.:
10/255881
Inventors:
Robert Croswell - Hanover Park IL
Gregory Dunn - Arlington Heights IL
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H01L 21311
US Classification:
438695, 438689, 257 63, 257189
Abstract:
High quality epitaxial layers of monocrystalline materials can be grown overlying monocrystalline substrates such as large silicon wafers by forming a compliant substrate for growing the monocrystalline layers. An accommodating buffer layer comprises a layer of monocrystalline oxide spaced apart from a silicon wafer by an amorphous interface layer of silicon oxide. The amorphous interface layer dissipates strain and permits the growth of a high quality monocrystalline oxide accommodating buffer layer. Any lattice mismatch between the accommodating buffer layer and the underlying silicon substrate is taken care of by the amorphous interface layer. In addition, formation of a compliant substrate may include utilizing surfactant enhanced epitaxy and epitaxial growth of single crystal silicon onto single crystal oxide materials. Monocrystalline substrates having a hydrogen ion implant are cleaved along the hydrogen ion implant, and an insulating substrate is bonded to the monocrystalline oxide.


Robert Croswell Photo 2

High Impedance Electromagnetic Surface And Method

US Patent:
7423608, Sep 9, 2008
Filed:
Dec 20, 2005
Appl. No.:
11/312286
Inventors:
Gregory J. Dunn - Arlington Heights IL, US
Robert T. Croswell - Hanover Park IL, US
George H. Kumpf - Hanover Park IL, US
John A. Svigelj - Crystal Lake IL, US
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H01Q 15/24
US Classification:
343909, 343700 MS, 343756, 343787
Abstract:
A high impedance surface () has a printed circuit board () with a first surface () and a second surface (), and a continuous electrically conductive plate () disposed on the second surface () of the printed circuit board (). A plurality of electrically conductive plates () is disposed on the first surface () of the printed circuit board (), while a plurality of elements are also provided. Each element comprises at least one of (1) at least one multi-layer inductor () electrically coupled between at least two of the electrically conductive plates () and embedded within the printed circuit board (), and (2) at least one capacitor () electrically coupled between at least two of the electrically conductive plates (). The capacitor () comprises at least one of (a) a dielectric material () disposed between adjacent electrically conductive plates, wherein the dielectric material () has a relative dielectric constant greater than 6, and (b) a mezzanine capacitor embedded within the printed circuit board ().


Robert Croswell Photo 3

Method For Forming Ceramic Film Capacitors

US Patent:
2004012, Jul 1, 2004
Filed:
Dec 30, 2002
Appl. No.:
10/331693
Inventors:
Robert Croswell - Hanover Park IL, US
Jovica Savic - Downers Grove IL, US
Aroon Tungare - Winfield IL, US
Taeyun Kim - Cary NC, US
Angus Kingon - Cary NC, US
Jon-Paul Maria - Raleigh NC, US
International Classification:
B05D003/02, B05D005/12
US Classification:
427/079000, 427/376100
Abstract:
Thin film ceramic foil capacitors are mass-produced using inline reel-to-reel processing techniques by starting () with a length of copper foil which serves as one plate of the capacitor, then depositing () a layer of a ceramic precursor on a portion of one side of the copper foil at a first station. The foil is advanced () to the next station where the ceramic precursor and the copper foil are heated () to remove any carrier solvents or vehicles, then pyrolyzed () to remove any residual organic materials. It is then sintered () at high temperatures to convert the ceramic to polycrystalline ceramic. A final top metal layer is then deposited () on the polycrystalline ceramic to form the other plate of the capacitor. The entire process or portions of the process is performed in-line such that one or more of the steps are simultaneously performed on different portions of the foil at the same time, or such that, after any one step, the foil is advanced and the step repeated at a new location on the foil.


Robert Croswell Photo 4

High Impedance Electromagnetic Surface And Method

US Patent:
7528788, May 5, 2009
Filed:
Jul 17, 2008
Appl. No.:
12/174960
Inventors:
Gregory J. Dunn - Arlington Heights IL, US
Robert T. Croswell - Hanover Park IL, US
George H. Kumpf - Hanover Park IL, US
John A. Svigelj - Crystal Lake IL, US
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H01Q 3/40
US Classification:
343795, 343700 MS, 343754, 343833
Abstract:
A high impedance surface () has a printed circuit board () with a first surface () and a second surface (), and a continuous electrically conductive plate () disposed on the second surface () of the printed circuit board (). A plurality of electrically conductive plates () is disposed on the first surface () of the printed circuit board (), while a plurality of elements are also provided. Each element comprises at least one of (1) at least one multi-layer inductor () electrically coupled between at least two of the electrically conductive plates () and embedded within the printed circuit board (), and (2) at least one capacitor () electrically coupled between at least two of the electrically conductive plates (). The capacitor () comprises at least one of (a) a dielectric material () disposed between adjacent electrically conductive plates, wherein the dielectric material () has a relative dielectric constant greater than 6, and (b) a mezzanine capacitor embedded within the printed circuit board ().


Robert Croswell Photo 5

Printed Circuit Dielectric Foil And Embedded Capacitors

US Patent:
7193838, Mar 20, 2007
Filed:
Dec 23, 2003
Appl. No.:
10/744695
Inventors:
Gregory J. Dunn - Arlington Heights IL, US
Remy J. Chilini - Crystal Lake IL, US
Robert T. Croswell - Hanover Park IL, US
Timothy B. Dean - Elk Grove IL, US
Claudia V. Gamboa - Chicago IL, US
Jovica Savic - Downers Grove IL, US
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H01G 4/30
US Classification:
3613011, 3613061, 3613063, 3613211, 361311, 361313
Abstract:
A dielectric circuit board foil () includes a conductive metal foil layer (), a crystallized dielectric oxide layer () disposed adjacent a first surface of the conductive metal foil layer, a lanthanum nickelate layer () disposed on the crystallized dielectric oxide layer, and an electrode layer () that is substantially made of one or more base metals disposed on the lanthanum nickelate layer. The foil () may be adhered to a printed circuit board sub-structure () and used to economically fabricate a plurality of embedded capacitors, including isolated capacitors of large capacitive density (>1000 pf/mm).


Robert Croswell Photo 6

Printed Circuit Patterned Embedded Capacitance Layer

US Patent:
7138068, Nov 21, 2006
Filed:
Mar 21, 2005
Appl. No.:
11/084938
Inventors:
Gregory J. Dunn - Arlington Heights IL, US
Robert T. Croswell - Hanover Park IL, US
Jaroslaw A. Magera - Palatine IL, US
Jovica Savic - Downers Grove IL, US
Aroon V. Tungare - Winfield IL, US
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H01L 21/302
US Classification:
216 83, 257773, 438381, 438778, 438793, 438794, 438791
Abstract:
A method is disclosed for fabricating a patterned embedded capacitance layer. The method includes fabricating () a ceramic oxide layer () overlying a conductive metal layer () overlying a printed circuit substrate (), perforating () the ceramic oxide layer within a region (), and removing () the ceramic oxide layer and the conductive metal layer in the region by chemical etching of the conductive metal layer. The ceramic oxide layer may be less than 1 micron thick.


Robert Croswell Photo 7

Embedded Capacitors And Methods For Their Fabrication And Connection

US Patent:
7361568, Apr 22, 2008
Filed:
Dec 21, 2005
Appl. No.:
11/316087
Inventors:
Gregory J. Dunn - Arlington Heights IL, US
Remy J. Chelini - Crystal Lake IL, US
Robert T. Croswell - Hanover Park IL, US
Philip M. Lessner - Newberry SC, US
Michael D. Prevallet - Mauldin SC, US
John D. Prymak - Greer SC, US
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H01L 21/20, H01L 29/00, H01L 23/48, H01G 4/005
US Classification:
438381, 438250, 257532, 257758, 257773, 257E21008, 361303
Abstract:
Embedded capacitors comprise a bimetal foil () that includes a first copper layer () and an aluminum layer () on the first copper layer. The aluminum layer has a smooth side adjacent the first copper layer and a high surface area textured side () opposite the first copper layer. The bimetal foil further includes an aluminum oxide layer () on the high surface area textured side of the aluminum layer, a conductive polymerlayer () on the aluminum oxide layer, and a second copper layer () overlying the aluminum oxide layer. The bimetal foil may be embedded in a circuit board () to form high value embedded capacitors.


Robert Croswell Photo 8

Printed Circuit Embedded Capacitors

US Patent:
7056800, Jun 6, 2006
Filed:
Dec 15, 2003
Appl. No.:
10/736327
Inventors:
Robert T. Croswell - Hanover Park IL, US
Gregory J. Dunn - Arlington Heights IL, US
Robert B. Lempkowski - Elk Grove IL, US
Aroon V. Tungare - Winfield IL, US
Jovica Savic - Downers Grove IL, US
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H01L 21/20, H01G 4/00
US Classification:
438381, 3613011
Abstract:
One of a plurality of capacitors embedded in a printed circuit structure includes a first electrode () overlaying a first substrate layer () of the printed circuit structure, a crystallized dielectric oxide core () overlaying the first electrode, a second electrode () overlying the crystallized dielectric oxide core, and a high temperature anti-oxidant layer () disposed between and contacting the crystallized dielectric oxide core and at least one of the first and second electrodes. The crystallized dielectric oxide core has a thickness that is less than 1 micron and has a capacitance density greater than 1000 pF/mm. The material and thickness are the same for each of the plurality of capacitors. The crystallized dielectric oxide core may be isolated from crystallized dielectric oxide cores of all other capacitors of the plurality of capacitors.


Robert Croswell Photo 9

Organic Semiconductor Device And Method

US Patent:
6891190, May 10, 2005
Filed:
May 23, 2002
Appl. No.:
10/154013
Inventors:
Ke Keryn Lian - Palatine IL, US
Robert T. Croswell - Hanover Park IL, US
Aroon Tungare - Winfield IL, US
Manes Eliacin - Buffalo Grove IL, US
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H01L029/76
US Classification:
257 40, 257310, 257642, 257759
Abstract:
An organic semiconductor device () can be embedded within a printed wiring board (). In various embodiments, the embedded device () can be accompanied by other organic semiconductor devices () and/or passive electrical components (). When so embedded, conductive vias () can be used to facilitate electrical connection to the embedded device. In various embodiments, specific categories of materials and/or processing steps are used to facilitate the making of organic semiconductors and/or passive electrical components, embedded or otherwise.


Robert Croswell Photo 10

Perovskite Cuprate Electronic Device Structure And Process

US Patent:
2004006, Apr 15, 2004
Filed:
Oct 10, 2002
Appl. No.:
10/267692
Inventors:
Gregory Dunn - Arlington Heights IL, US
Robert Croswell - Hanover Park IL, US
Jeffrey Petsinger - Wayne IL, US
Assignee:
MOTOROLA, INC. - Schaumburg IL
International Classification:
H01L029/04
US Classification:
257/075000
Abstract:
High quality epitaxial layers of monocrystalline materials () can be grown overlying monocrystalline substrates () such as large silicon wafers by forming a compliant substrate for growing the monocrystalline layers. An accommodating buffer layer () comprises a layer of monocrystalline oxide spaced apart from a silicon wafer by an amorphous interface layer () of silicon oxide. The amorphous interface layer dissipates strain and permits the growth of a high quality monocrystalline oxide accommodating buffer layer. Any lattice mismatch between the accommodating buffer layer and the underlying silicon substrate is taken care of by the amorphous interface layer. Some preferred electronic devices are described that use a layer or pattern of a perovskite cuprate () such as YBaCuO(YBCO) or YPrBaCuO(YPBCO, 0