1
Uttam S Ghoshal, Harry Kroger: Superconductor-semiconductor hybrid memory circuits with superconducting three-terminal switching devices. Microelectronics & Computer Technology, Fulbright & Jaworski, February 7, 1995: US05388068 (143 worldwide citation)

Superconducting-semiconducting hybrid memories are disclosed. These superconducting-semiconducting hybrid memories utilize semiconductor circuits to store information, and either superconducting or semiconducting or combinations of superconducting and semiconducting circuits, with at least some supe ...


2
Curtis N Potter, David A Gibson, Uttam S Ghoshal: Coaxial die and substrate bumps. Microelectronics and Computer Technology Corporation, Johnson & Gibbs, September 13, 1994: US05347086 (23 worldwide citation)

A coaxial bump for connecting a die to a substrate includes a center post and a ground ring surrounding and shielding the center post. The center post may be a center conductor line, and the ground ring may be generally torus-shaped, nearly closed or completely closed. The coaxial bump provides very ...


3
Uttam S Ghoshal: High speed bootstrapped CMOS driver. Microelectronics and Computer Technology Corporation, Fulbright & Jaworski, August 25, 1987: US04689505 (18 worldwide citation)

A bootstrapped CMOS driver circuit capable of driving large capacitance loads with small internal delays. Higher driving capability is achieved by using only n-channel transistors at the output and overdriving the transistors during the transitions. A total internal delay of less than one nanosecond ...


4
Harry Kroger, Uttam S Ghoshal: Superconducting-semiconducting circuits, devices and systems. Microelectronics & Computer Technology Corporation, Fulbright & Jaworski, June 18, 1991: US05024993 (14 worldwide citation)

A hybrid superconducting-semiconducting field effect transistor-like circuit element comprised of a superconducting field effect transistor and a closely associated cryogenic semiconductor inverter for providing signal gain is described. The hybrid circuit functions as a nearly ideal pass gate in cr ...


5
Uttam S Ghoshal: CMOS interconnection circuit. Microelectronics and Computer Technology Corporation, Fulbright & Jaworski, December 25, 1990: US04980580 (13 worldwide citation)

A low-voltage CMOS interconnection circuit utilizing high-Tc superconducting tunnel junctions and interconnects for a very high speed interchip communication at low temperatures (4-77K). An improved driver produces very small current transients and has good immunity to noise from input voltage fluct ...


6
Uttam S Ghoshal, Harry Kroger: Superconducting semiconducting cross-bar circuit. Microelectronics & Computer Technology Corporation, Fulbright & Jaworski, July 18, 1995: US05434530 (12 worldwide citation)

A hybrid superconducting-semiconducting field effect transistor-like circuit element comprised of a superconducting field effect transistor and a closely associated cryogenic semiconductor inverter for providing signal gain is described. The hybrid circuit functions nearly as an ideal pass gate in c ...


7
David A Gibson, Uttam S Ghoshal: Continuous superconductor to semiconductor converter circuit. Microelectronics And Computer Technology Corporation, David M Sigmond, Michael J Ritter, Michael Caywood, June 13, 1995: US05424656 (11 worldwide citation)

Apparatus for converting superconductor low level signals to semiconductor signal levels utilizing a continuous superconductor to semiconductor converter circuit biased for maximum gain and without the need for a clocked reset signal. Employing a unique biasing arrangement utilizing two capacitors a ...


8
Uttam S Ghoshal, Snigdha Ghoshal: High speed magnetic flux sampling. September 12, 2000: US06118284 (11 worldwide citation)

A system for measuring magnetic fields produced by an integrated circuit device-under-test includes a clock generator configured to generate a clock signal, a delay circuit configured to generate a delayed clock signal having a known delay relative to the clock signal, a pulse generator configured t ...


9
Uttam S Ghoshal: Wideband dual amplifier circuits. International Business Machines Corporation, Casimer K Salys, Cardinal Law Group, March 12, 2002: US06356147 (2 worldwide citation)

Dual amplifying circuits having a magnetic tunnel junction device and a field effect transistor configured in a complementing set are disclosed herein. In one embodiment, the field effect transistor is operable to control a current level of a current operating signal flowing through the magnetic tun ...


10
Uttam S Ghoshal: Thermoelectric cooling with plural dynamic switching to isolate heat transport mechanisms. International Business Machines, ma gao, June 16, 1999: CN98122808

Apparatus and method for sub-ambient cooling using thermoelectric element dynamics in conjunction with pulsed electrical power and multiple selectively enabled thermal switches. In one form, Peltier devices are dynamically enabled using pulses of electrical power while the thermal paths, between the ...