JOHN H LIENHARD
Engineering in Lexington, MA

6091062, Jul 18, 2000

Jan 27, 1998

9/014214

Andreas C. Pfahnl - Londonderry NH
John H. Lienhard - Lexington MA
Daniel J. Watson - Concord NH

Kinetrix, Inc. - Bedford NH

H05B 102

219497

A semiconductor device handler with a temperature controlled test area. Temperature control is provided in part through the use of temperature controlled air forced across the test area. For heating the test area, electrical resistance heaters are uniformly distributed through the test area and are controlled to provide the desired temperature. The handler has a close pitch between adjacent sockets such that is not possible to distribute refrigeration elements over the test area. Instead, a refrigeration element is placed on one side of the test area. To prevent formation of an undesirable temperature gradient, heat is injected at a specific location in the test area.

8647477, Feb 11, 2014

Feb 15, 2011

13/028170

Prakash N. Govindan - Cambridge MA, US
Karan H. Mistry - Cambridge MA, US
John H. Lienhard - Lexington MA, US
Syed M. Zubair - Dhahran, SA

Massachusetts Institute of Technology - Cambridge MA
King Fahd University of Petroleum and Minerals - Dhahran

C02F 1/04, B01D 3/34

203 11, 203 24, 203 92, 203 95, 261117, 95204, 95228, 95231

Water can be separated from a liquid composition (e. g. , salt water) by directing a carrier gas flow through an evaporator and directly contacting the carrier gas flow with the liquid composition in the evaporator to humidify the carrier gas with water evaporated from the liquid composition, producing a humidified gas flow, which is then compressed by injecting a fluid that includes steam and/or an organic compound at an elevated pressure at least five times greater than the pressure in the evaporator and at a temperature at least as high as a saturation temperature of the steam/organic compound at the elevated pressure of the fluid. After being compressed, the humidified gas flow is directed through at least one condenser where water is condensed from the compressed humidified gas flow and collected; and the dehumidified gas flow is re-circulated back through the evaporator for reuse as the carrier gas.

2014001, Jan 16, 2014

Jun 24, 2013

13/924732

Prakash Narayan Govindan - Cambridge MA, US
Gregory P. Thiel - Cambridge MA, US
Ronan K. McGovern - Cambridge MA, US
John H. Lienhard - Lexington MA, US
Sarit K. Das - Cambridge MA, US
Karim M. Chehayeb - Beirut, LB
Syed M. Zubair - Dhahran, SA
Mohammed A. Antar - Dhahran, SA

KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS - Dhahran
MASSACHUSETTS INSTITUTE OF TECHNOLOGY - Cambridge MA

F15D 1/00

137806

A carrier-gas mixture is directed through a fluid flow path in a combined heat and mass transfer device, which can be operated at sub-atmospheric pressure. Heat and mass are transferred from or to the carrier-gas mixture via interaction with a liquid composition that includes a vaporizable component in a liquid state to substantially change the content of the vaporizable component in the carrier-gas mixture via evaporation or condensation. The mass flow rate of the carrier-gas mixture is varied by extracting or injecting the carrier-gas mixture from at least one intermediate location in the fluid flow path, and/or the mass flow rate of the liquid composition is varied by extracting or injecting the liquid composition from at least one intermediate location in the fluid flow path; and the flow of the carrier-gas mixture or the liquid composition is regulated to reduce the average local enthalpy pinch in the device.

5918648, Jul 6, 1999

Feb 21, 1997

8/803913

Gregory L. Carr - Newburyport MA
William Cavallaro - Bradford MA
John Lienhard - Lexington MA

Speedline Techologies, Inc. - Franklin MA

B65B 104

141198

A dispensing system for dispensing material onto a substrate. In one embodiment, the material is dispensed into a cavity of the substrate, the cavity having an unknown volume. The dispensing system includes a housing, a dispensing apparatus, coupled to the housing, that dispenses a metered quantity of material, and a volumetric measuring probe, coupled to the housing, and positionable over the cavity of the substrate to measure the volume of the cavity. In embodiments, the volumetric measuring probe includes a concave section having a mating edge that is constructed and arranged to create a substantially airtight seal between the probe and the substrate, a chamber, a first valve, disposed between the chamber and the concave section, a pressure transducer coupled to the concave section to determine air pressure within the concave section, an air inlet port, a second valve, disposed between the air inlet port and the concave section, an air exhaust port, and a third valve, disposed between the chamber and the exhaust port. In one embodiment, the volumetric measuring probe determines the volume of material dispensed from the dispensing system.

8496234, Jul 30, 2013

Jul 16, 2012

13/550094

Prakash Narayan Govindan - Boston MA, US
Gregory P. Thiel - Cambridge MA, US
Ronan K. McGovern - Cambridge MA, US
John H. Lienhard - Lexington MA, US
Sarit K. Das - Cambridge MA, US
Karim M. Chehayeb - Beirut, LB
Syed M. Zubair - Dhahran, SA
Mohammed A. Antar - Dhahran, SA

Massachusetts Institute of Technology - Cambridge MA
King Fahd University of Petroleum and Minerals - Dhahran

B01F 3/04

261128, 261 96, 261117, 261152, 261157, 261159

A carrier-gas mixture is directed through a fluid flow path in a combined heat and mass transfer device operating at a sub-atmospheric pressure. Heat and mass are transferred from or to the carrier-gas mixture via interaction with a liquid composition that includes a vaporizable component in a liquid state to substantially change the content of the vaporizable component in the carrier-gas mixture via evaporation or condensation of the vaporizable component. The mass flow rate of the carrier-gas mixture is varied by extracting or injecting the carrier-gas mixture from at least one intermediate location in the fluid flow path, and/or the mass flow rate of the liquid composition is varied by extracting or injecting the liquid composition from at least one intermediate location in the fluid flow path; and the flow of the carrier-gas mixture or the liquid composition is regulated to reduce the average local enthalpy pinch in the device.

2013027, Oct 24, 2013

Apr 8, 2013

13/858194

Ryan Enright - Whitestone NY, US
John H. Lienhard - Lexington MA, US

B01D 61/36

202234

Membrane distillation system. The system includes a solar radiation absorbing porous membrane positioned to receive solar radiation to heat the membrane. A transparent cover is spaced apart from the membrane to form a channel through which a saline feed stream flows. A condensation structure is spaced apart from an opposite side of the porous membrane forming an air gap channel there between. Means are provided for coolant flow along an outside surface of the condensation structure so that distilled water will condense on the condensation structure for collection from the air gap channel.

8119007, Feb 21, 2012

Nov 19, 2010

12/950504

Anurag Bajpayee - Cambridge MA, US
Daniel Kraemer - Cambridge MA, US
Andrew Jerome Muto - Cambridge MA, US
Gang Chen - Carlisle MA, US
John H. Lienhard - Lexington MA, US
Borivoje B. Mikic - Charlestown MA, US

Massachusetts Institute of Technology - Cambridge MA

B01D 11/04, B01D 11/00, C02F 1/26

210642, 210634

Substantially pure water is produced via desalination using a directional solvent that directionally dissolves water but does not dissolve salt. The directional solvent is heated to dissolve water from the salt solution into the directional solvent. The remaining highly concentrated salt water is removed, and the solution of directional solvent and water is cooled to precipitate substantially pure water out of the solution.

8252092, Aug 28, 2012

Oct 5, 2009

12/573221

Prakash N. Govindan - Cambridge MA, US
Mostafa H. Elsharqawy - Cambridge MA, US
John H. Lienhard - Lexington MA, US
Syed N. Zubair - Dhahran, SA

Massachusetts Institute of Technology - Cambridge MA
Kind Fahd University of Petroleum and Minerals - Dhahran

B01D 50/00

95211, 95228, 95231, 96297, 261117

Water is substantially separated from a liquid mixture (e. g. , saline water) that includes water using a humidification chamber at a lower pressure and a dehumidification chamber at a higher pressure. A carrier gas is flowed through the humidification chamber; and inside the humidification chamber, the carrier gas directly contacts the liquid mixture to humidify the carrier gas with evaporated water from the liquid mixture to produce a humidified gas flow. The humidified gas flow is then directed through the dehumidification chamber, where water is condensed from the humidified gas flow and collected. The absolute pressure inside the humidification chamber is at least 10% lower than the absolute pressure inside the dehumidification chamber.

8292272, Oct 23, 2012

Sep 4, 2009

12/554726

Mostafa H. Elsharqawy - Cambridge MA, US
John H. Lienhard - Lexington MA, US
Syed M. Zubair - Dhahran, SA
Prakash N. Govindan - Cambridge MA, US

Massachusetts Institute of Technology - Cambridge MA
King Fahd University of Petroleum and Minerals - Dhahran

B01F 3/04

261117, 95211, 95227, 95228, 96290, 96294

Water is separated from a liquid mixture (e. g. , sea water) using a humidification chamber and a dehumidification chamber that are each operated at a pressure less than ambient atmospheric pressure (e. g. , at least 10% less than ambient atmospheric pressure). A carrier gas is flowed through the humidification chamber; and inside the humidification chamber, the carrier gas directly contacts the liquid mixture to humidify the carrier gas with water evaporated from the liquid mixture to produce a humidified gas flow. The humidified gas flow is directed through the dehumidification chamber, where water is condensed from the humidified gas flow and collected.

8501007, Aug 6, 2013

Feb 13, 2012

13/371720

Anurag Bajpayee - Cambridge MA, US
Daniel Kraemer - Cambridge MA, US
Andrew Jerome Muto - Cambridge MA, US
Gang Chen - Carlisle MA, US
John H. Lienhard - Lexington MA, US
Borivoje B. Mikic - Charlestown MA, US

Massachusetts Institute of Technology - Cambridge MA

B01D 11/04, B01D 11/00, C02F 1/26

210642, 210634

Substantially pure water is produced via desalination using a directional solvent that directionally dissolves water but does not dissolve salt. The directional solvent is heated to dissolve water from the salt solution into the directional solvent. The remaining highly concentrated salt water is removed, and the solution of directional solvent and water is cooled to precipitate substantially pure water out of the solution.