Robert Alan Higgins

US Patent:

45388954, Sep 3, 1985

Filed:

Mar 7, 1983

Appl. No.:

6/472430

Inventors:

Robert C. Higgins - Broomfield CO
Mikel J. Stanich - Louisville CO
Larry L. Wolfe - Broomfield CO

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G03G 1504
B41B 2108
B41B 1300
G02B 2730

US Classification:

355 3R

Abstract:

An optical system for use with laser chips to counteract variations in wavelength produced by semiconductor chips, to counteract astigmatism effects common to laser chips, to counteract variations in the distance between the plane of emission of the beam and the plane of a collimating lens, to counteract variations in beam size in perpendicular planes, to counteract variations in the divergence angle of emission common to laser chips, and to counteract tilt variations caused by imperfect reflecting surfaces. The system includes an apertured achromatic doublet lens for collimating the beam, a cylindrical lens, a rotating mirror, and a combination of toroidal and spherical lens.

US Patent:

42722705, Jun 9, 1981

Filed:

Apr 4, 1979

Appl. No.:

6/026809

Inventors:

Robert D. Higgins - Houston TX

Assignee:

Petrochem Consultants, Inc. - Houston TX

International Classification:

F25J 302

US Classification:

62 24

Abstract:

A vapor fraction containing hydrogen and at least one hydrocarbon selected from the group consisting of C. sub. 1 to C. sub. 4 hydrocarbons is separated from a hydrogen-rich refinery off-gas feed to give a liquid product fraction. The refinery off-gas is fed to and compressed in a compressor/expander having compressor means and expander means mounted and driven on a common shaft, and then cooled and partially condensed to form a two-phase fluid in a heat exchanger followed by separation of the vapor and liquid product phases of the fluid in a separator or a separator/fractionation column stabilizer unit. The separated vapor phase is transmitted to the compressor/expander unit wherein the vapor is depressurized and partially condensed, thereby driving the compressor. The partially condensed depressurized vapor fraction from the expander and, optionally, the liquid phase product fraction from the separator are transmitted in separate streams to the heat exchanger for separate thermal contact with the compressed feed gas wherein the partially condensed depressurized vapor fraction is fully vaporized and the feed gases are cooled. The fully vaporized fraction and the liquid product fraction are recovered in separate streams.

US Patent:

43560148, Oct 26, 1982

Filed:

Apr 17, 1981

Appl. No.:

6/255339

Inventors:

Robert D. Higgins - Houston TX

Assignee:

Petrochem Consultants, Inc. - Houston TX

International Classification:

F25J 302

US Classification:

62 28

Abstract:

A vapor fraction containing hydrogen and at least one hydrocarbon selected from the group consisting of C. sub. 1 to C. sub. 4 hydrocarbons is separated from a hydrogen-rich refinery off-gas feed to give a liquid product fraction. The refinery off-gas is fed to and compressed in a compressor/expander having compressor means and expander means mounted and driven on a common shaft, and then cooled and partially condensed to form a two-phase fluid in a heat exchanger followed by separation of the vapor and liquid product phases of the fluid in a separator or a separator/fractionation column stabilizer unit. The separated vapor phase is transmitted to the compressor/expander unit wherein the vapor is depressurized and partially condensed, thereby driving the compressor. The partially condensed depressurized vapor fraction from the expander and, optionally, the liquid phase product fraction from the separator are transmitted in separate streams to the heat exchanger for separate thermal contact with the compressed feed gas wherein the partially condensed depressurized vapor fraction is fully vaporized and the feed gases are cooled. The fully vaporized fraction and the liquid product fraction are recovered in separate streams.

Address:

11125 W 25 Pl, Lakewood, CO 80215

Phone:

3032384124

VIN:

1G6KD57Y39U147220

Make:

CADILLAC

Model:

DTS

Year:

2009