Joseph B Perry

US Patent:

8197722, Jun 12, 2012

Filed:

Jul 30, 2001

Appl. No.:

09/918874

Inventors:

Seth Marder - Pasadena CA, US
Joseph Perry - Pasadena CA, US

Assignee:

The California Institute of Technology - Pasadena CA

International Classification:

G03C 1/00
G03C 1/73
G03G 7/00
G03G 5/00
G02F 1/361
G02B 5/22
C07C 39/12
C07C 39/205
G03H 1/00
H01S 3/09
H01S 3/094

US Classification:

252586, 252582, 25230117, 25230121, 25230122, 372 30, 372 53, 372 80, 544 93, 544296, 544 78, 544302, 430 73, 430 74, 430945, 359 27, 359264, 564305, 564307, 564426, 564427, 564429, 564441, 564442, 564443, 549 6, 549 33, 549 59, 549 68, 549216, 549475, 549474, 549 49, 568425, 568631, 568729

Abstract:

Compositions capable of simultaneous two-photon absorption and higher order absorptivities are provided. Compounds having a donor-pi-donor or acceptor-pi-acceptor structure are of particular interest, where the donor is an electron donating group, acceptor is an electron accepting group, and pi is a pi bridge linking the donor and/or acceptor groups. The pi bridge may additionally be substituted with electron donating or withdrawing groups to alter the absorptive wavelength of the structure. Also disclosed are methods of generating an excited state of such compounds through optical stimulation with light using simultaneous absorption of photons of energies individually insufficient to achieve an excited state of the compound, but capable of doing so upon simultaneous absorption of two or more such photons. Applications employing such methods are also provided, including controlled polymerization achieved through focusing of the light source(s) used.

US Patent:

50626930, Nov 5, 1991

Filed:

Feb 15, 1990

Appl. No.:

7/480385

Inventors:

David N. Beratan - South Pasadena CA
Joseph W. Perry - South Pasadena CA

Assignee:

The United States of America as represented by the Administrator of the
National Aeronautics and Administration - Washington DC

International Classification:

G02B 523
G02B 101
G02B 112

US Classification:

359241

Abstract:

A single material (not a multi-element structure) spatial light modulator (50) may be written to (30), as well as read out from (80), using light (20). The device has tailorable rise and hold times dependent on the composition and concentration of the molecular species used as the active components. The spatial resolution of this device is limited only by light diffraction as in volume holograms. The device may function as a two-dimensional mask (transmission or reflection) or as a three-dimensional volume holographic medium. This device, based on optically-induced electron transfer, is able to perform incoherent to coherent image conversion or wavelength conversion over a wide spectral range (ultraviolet, visible, or near-infrared regions).

US Patent:

54883610, Jan 30, 1996

Filed:

Aug 16, 1994

Appl. No.:

8/291604

Inventors:

Joseph W. Perry - La Habra Heights CA

International Classification:

G08B 2300

US Classification:

340984

Abstract:

A navigation lights device comprises red, green, and white navigation lights attached to the top of a left shoulder portion, a right shoulder portion, and a back side portion, respectively, of a buoyant vest or harness worn over the upper body of a person. A battery pack can be attached to the vest to provide electrical power to the navigation lights via wires that extend therebetween. The navigation lights device can be permanently attached to the vest or can be releasably attached. The navigation lights device also comprises headgear or a helmet that is worn over a top portion of a person's head and includes red, green, and white navigation lights attached to a left side portion, right side portion, and back side portion, respectively, of the headgear. The headgear can include a battery pack attached to the headgear to provide electrical power to the navigation lights via wires that extend therebetween.

US Patent:

D3206874, Oct 8, 1991

Filed:

Jan 3, 1989

Appl. No.:

7/292728

Inventors:

Joseph S. Perry - Hollywood CA

US Classification:

D34 44

US Patent:

62679139, Jul 31, 2001

Filed:

Nov 7, 1997

Appl. No.:

8/965945

Inventors:

Seth Marder - Pasadena CA
Joseph Perry - Pasadena CA

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

C09K 1106
C07D40306
G02B 522
G02F 1361

US Classification:

252582

Abstract:

Compositions capable of simultaneous two-photon absorption and higher order absorptivities are disclosed. Many of these compositions are compounds satisfying the formulae D-. PI. -D, A-. PI. -A, D-A-D and A-D-A, wherein D is an electron donor group, A is an electron acceptor group and. PI. comprises a bridge of. pi. -conjugated bonds connecting the electron donor groups and electron acceptor groups. In A-D-A and D-A-D compounds, the. pi. bridge is substituted with electron donor groups and electron acceptor groups, respectively. Also disclosed are methods that generate an electronically excited state of a compound, including those satisfying one of these formulae. The electronically excited state is achieved in a method that includes irradiating the compound with light. Then, the compound is converted to a multi-photon electronically excited state upon simultaneous absorption of at least two photons of light. The sum of the energies of all of the absorbed photons is greater than or equal to the transition energy from a ground state of the compound to the multi-photon excited state.

US Patent:

48461342, Jul 11, 1989

Filed:

Mar 30, 1988

Appl. No.:

7/175203

Inventors:

Joseph W. Perry - Buena Park CA
Jonathan T. Uhl - Brea CA
Thomas L. Davis - Long Beach CA
David E. Potts - La Mirada CA

Assignee:

V. R. Systems, Inc. - Buena Park CA

International Classification:

F02M 3900

US Classification:

123520

Abstract:

An apparatus and method are disclosed for accumulating hydrocarbon vapor and rendering the vapor environmentally safe by combustion. An internal combustion engine is attached to an interface which accumulates hydrocarbon vapor present in the soil after a spill or leakage from a storage tank or transfer lines. The vacuum of the internal combustion engine present in the intake manifold is used to draw the hydrocarbon vapors from the soil into the interface and then into the engine where they are burned. A catalytic converter of conventional design cleans the end exhaust removing any remaining hydrocarbon pollutants.

US Patent:

52554287, Oct 26, 1993

Filed:

Apr 3, 1991

Appl. No.:

7/680651

Inventors:

Allan Gottsche - Lynge, DK
Joseph W. Perry - Pasadena CA

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

H01B 1900
G02F 100

US Classification:

296311

Abstract:

An optical voltage sensor utilizing an electrooptic polymer is disclosed for application to electric power distribution systems. The sensor, which can be manufactured at low cost in accordance with a disclosed method, measures voltages across a greater range than prior art sensors. The electrooptic polymer, which replaces the optical crystal used in prior art sensors, is sandwiched directly between two high voltage electrodes. Voltage is measured by fiber optical means, and no voltage division is required. The sample of electrooptic polymer is fabricated in a special mold and later mounted in a sensor housing. Alternatively, mold and sensor housing may be identical. The sensor housing is made out of a machinable polymeric material and is equipped with two opposing optical windows. The optical windows are mounted in the bottom of machined holes in the wall of the mold. These holes provide for mounting of the polarizing optical components and for mounting of the fiber optic connectors.