Jerry A Meyer

US Patent:

54773776, Dec 19, 1995

Filed:

Jul 17, 1992

Appl. No.:

7/916290

Inventors:

Terry D. Golding - Missouri City TX
John H. Miller - Houston TX
Jerry R. Meyer - Catonsville MD
Eric R. Youngdale - Alexandria VA
Filbert J. Bartoli - Upper Marlboro MD
Craig A. Hoffman - Columbia MD

Assignee:

University of Houston - Houston TX
The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G02F 135

US Classification:

359326

Abstract:

The present invention relates to novel optical devices operating in the infrared, based on indirect narrow-gap superlattices (INGS) as the active optical materials. The novel optical devices include (1) wideband all-optical switches, which combine small insertion loss at low light intensities with efficient optical switching and optical limiting at high intensities, and (2) wideband infrared detectors with high collection efficiency and low tunneling noise currents, suitable for use in longwave infrared focal plane arrays. INGS comprise multiple semimetal/semiconductor layers having compatible crystal symmetry across each heterojunction between a given semimetal and the adjoining semiconductor, wherein each semimetal layer sandwiched between semiconductor layers is grown thin enough that each semimetal layer becomes a semiconductor, and wherein each semiconductor layer is thin enough that there is coupling between adjacent semiconductor layers. The present invention utilizes INGS, which are fabricated to meet the criteria E. sub. g. sup. ind

US Patent:

39878546, Oct 26, 1976

Filed:

Feb 17, 1972

Appl. No.:

5/227558

Inventors:

Rudy B. Callihan - Houston TX
Jerry W. Meyer - Houston TX
Clyde S. Wainwright - Bellaire TX
Bobby B. Taylor - Houston TX

Assignee:

Baker Oil Tools, Inc. - Houston TX

International Classification:

E21B 4304
E21B 4310

US Classification:

166278

Abstract:

Apparatus for and method of gravel packing a well, wherein a well liner is run into a well bore on a hydraulically set packer assembly which is releasably supported on a setting tool which provides a fluid flow crossover and seals which are selectively positionable within the packer body and a sealing receptacle in the liner. A ball is dropped to enable pressure to set the packer. The running tool is released and moved upwardly to a circulating position at which fluid can circulate downwardly through the running pipe string and the running tool, through the crossover to the annulus outside the liner to deposit gravel, the fluid flowing upwardly through the crossover and past the packer into the annulus outside of the running pipe string. The running tool is then moved further upwardly to position the seals for reverse circulation of fluid down the annulus outside of the running pipe string and through the crossover into the liner, and then back through the crossover into the running in pipe string. All of the setting, circulating, gravel placement and reverse circulating operations are performed during a single trip of the equipment into the well bore.