Ki Ae Kim

52647110, Nov 23, 1993

Sep 15, 1992

7/945040

Mitra Dutta - Matawan NJ
Harold L. Grubin - West Hartford CT
Gerald J. Iafrate - Raleigh NC
Ki Wook Kim - Durham NC
Michael A. Stroscio - Durham NC

The United States of America as represented by the Secretary of the Army - Washington DC

H01L 2902

257 14

A polar semiconductor quantum wire for use in electronic and opto-electronic devices. The polar semiconductor quantum wire is either completely or partially encapsulated in metal to reduce the strength of the scattering potential associated with interface optical phonons normally established at the lateral boundaries of polar semiconductor quantum wires. Metal alone or metal employed in conjunction with modulation doping enhances the transport of charge carriers within the polar semiconductor quantum wire.

40395120, Aug 2, 1977

Sep 15, 1975

5/613145

Ki Soo Kim - Irvington NY
Siegfried Altscher - Monsey NY

Stauffer Chemical Company - Westport CT

C08G 3310
C08G 3318

260 61

Flame retardant polymers of benzene phosphorus oxydichloride, 4,4'-thiodiphenol and POCl. sub. 3 are disclosed which are preferably formed by reacting these monomers in an inert organic solvent at ambient temperature in the presence of an amine acid acceptor.

42062969, Jun 3, 1980

Sep 15, 1975

5/613142

Arthur J. Yu - Stamford CT
Siegfried Altscher - Monsey NY
Ki S. Kim - Irvington NY

Stauffer Chemical Company - Westport CT

C08L 6702
C08L 8100
C08L 8502

525437

Polyester compositions containing an effective amount for flame retardancy of a copolymer of (1) benzene phosphorus oxydichloride, (2) 2,4'-thiodiphenol, 4,4'-thiodiphenol, 2,4'-sulfonyl diphenol, 4,4'-sulfonyl diphenol or mixtures thereof, and (3) POCl. sub. 3 are disclosed.

53748310, Dec 20, 1994

Apr 14, 1993

8/051105

Mitra Dutta - Matawan NJ
Gerald J. Iafrate - Raleigh NC
Ki W. Kim - Durham NC
Michael A. Stroscio - Durham NC

The United States of America as represented by the Secretary of the Army - Washington DC

H01L 29225

257 23

A phonon modulator which includes a semiconductor body having at least first and second polar semiconductor quantum wells formed therein separated by a polar semiconductor barrier. The conduction band energies of the wells and barrier are selected such that the lowest energy electronic states in the two wells are separated by an energy which is greater than the energies of optical phonons in the well and barrier materials. Respective voltages are applied to the wells which are less than the optical phonon emission threshold in the well and barrier materials to generate respective currents therein. Increasing the voltage to the first well to a level in excess of such optical phonon emission threshold causes optical phonons to be emitted from the first well to create a standing interface mode from the first well through the barrier to the second well, thereby providing a scattering mechanism for electrons in the second well and reducing the current thereof.

40425428, Aug 16, 1977

Sep 15, 1975

5/613143

Ki Soo Kim - Irvington NY

Stauffer Chemical Company - Westport CT

C08L 8900

260 6

The recovery of a polymer product formed by condensing an organo-phosphonic acid dichloride or dibromide, a dihydroxy aromatic compound and, optionally, a crosslinking momomer in an organic solvent reaction medium, as a granular solid is accomplished by combining said organic solvent containing the polymer product and an aqueous solution which contains an effective amount of suspending agent to later induce precipitation of said polymer product and by thereafter agitating the solution while removing the solvent therefrom to affect precipitation of said granular polymer product.