James Cowan

Person

Lexington, MA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Surface relief volume reflective diffractive structure
- Patent number 9,864,339
- Issue date Jan 9, 2018
- Aztec Systems, Inc.
- James J. Cowan
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Surface relief volume reflective diffractive structure
- Patent number 9,158,046
- Issue date Oct 13, 2015
- Kavlico Corporation
- James J. Cowan
- G02 - OPTICS
Information Patent Grant
Surface relief volume reflective diffractive structure
- Patent number 8,254,029
- Issue date Aug 28, 2012
- Aztec Systems, Inc.
- James J. Cowan
- G02 - OPTICS
Information Patent Grant
Directional diffuser
- Patent number 7,460,303
- Issue date Dec 2, 2008
- Aztec Systems, Inc.
- James Cowan
- G02 - OPTICS
Information Patent Grant
Actively stabilized, single input beam, interference lithography sy...
- Patent number 7,304,775
- Issue date Dec 4, 2007
- CoHo Holdings, LLC
- Douglas S. Hobbs
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Microstructured optical device for remote chemical sensing
- Patent number 7,262,856
- Issue date Aug 28, 2007
- Douglas S. Hobbs
- G01 - MEASURING TESTING
Information Patent Grant
Directional diffuser
- Patent number 6,940,665
- Issue date Sep 6, 2005
- James Cowan
- G02 - OPTICS
Information Patent Grant
Optical wavelength resonant device for chemical sensing
- Patent number 6,870,624
- Issue date Mar 22, 2005
- Coho Holdings LLC
- Douglas S. Hobbs
- G02 - OPTICS
Information Patent Grant
Optical device for filtering and sensing
- Patent number 6,791,757
- Issue date Sep 14, 2004
- CoHo Holdings, LLC
- Douglas S. Hobbs
- G02 - OPTICS
Information Patent Grant
Electro-optic device allowing wavelength tuning
- Patent number 6,707,518
- Issue date Mar 16, 2004
- CoHo Holdings, LLC
- James J. Cowan
- G02 - OPTICS
Information Patent Grant
Directional diffuser
- Patent number 6,608,722
- Issue date Aug 19, 2003
- James Cowan
- G02 - OPTICS
Information Patent Grant
Holographic optical data storage medium
- Patent number 4,999,234
- Issue date Mar 12, 1991
- Polaroid Corporation
- James J. Cowan
- G02 - OPTICS
Information Patent Grant
Volume phase reflection holograms and methods for fabricating them
- Patent number 4,888,260
- Issue date Dec 19, 1989
- Polaroid Corporation
- James J. Cowan
- G02 - OPTICS
Information Patent Grant
Method of forming volume phase reflection holograms
- Patent number 4,874,213
- Issue date Oct 17, 1989
- Polaroid Corporation
- James J. Cowan
- G02 - OPTICS
Information Patent Grant
Method of replicating volume phase reflection holograms
- Patent number 4,839,250
- Issue date Jun 13, 1989
- Polaroid Corporation, Patent Department
- James J. Cowan
- G02 - OPTICS
Information Patent Grant
Method and apparatus for exposing photosensitive material
- Patent number 4,496,216
- Issue date Jan 29, 1985
- Polaroid Corporation
- James J. Cowan
- G02 - OPTICS
Information Patent Grant
Laser apodizing filter
- Patent number 4,469,407
- Issue date Sep 4, 1984
- Polaroid Corporation
- James J. Cowan
- G02 - OPTICS
Information Patent Grant
Method for producing a surface relief pattern
- Patent number 4,402,571
- Issue date Sep 6, 1983
- Polaroid Corporation
- James J. Cowan
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
SURFACE RELIEF VOLUME REFLECTIVE DIFFRACTIVE STRUCTURE
- Publication number 20160098010
- Publication date Apr 7, 2016
- AZTEC SYSTEMS, INC.
- James J. COWAN
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SURFACE RELIEF VOLUME REFLECTIVE DIFFRACTIVE STRUCTURE
- Publication number 20120300272
- Publication date Nov 29, 2012
- AZTEC SYSTEMS, INC.
- James J. COWAN
- G02 - OPTICS
Information Patent Application
Surface Relief Volume Reflective Diffractive Structure
- Publication number 20080309996
- Publication date Dec 18, 2008
- James J. Cowan
- G02 - OPTICS
Information Patent Application
DIRECTIONAL DIFFUSER
- Publication number 20080013180
- Publication date Jan 17, 2008
- James Cowan
- G02 - OPTICS
Information Patent Application
Microstructured optical device for remote chemical sensing
- Publication number 20070036680
- Publication date Feb 15, 2007
- Douglas S. Hobbs
- G02 - OPTICS
Information Patent Application
Surface relief structure
- Publication number 20060002656
- Publication date Jan 5, 2006
- James J. Cowan
- G02 - OPTICS
Information Patent Application
Directional diffuser
- Publication number 20050174646
- Publication date Aug 11, 2005
- James Cowan
- G02 - OPTICS
Information Patent Application
Directional diffuser
- Publication number 20040100699
- Publication date May 27, 2004
- James Cowan
- G02 - OPTICS
Information Patent Application
Optical wavelength resonant device for chemical sensing
- Publication number 20030210396
- Publication date Nov 13, 2003
- Douglas S. Hobbs
- G02 - OPTICS
Information Patent Application
Optical device for filtering and sensing
- Publication number 20030002156
- Publication date Jan 2, 2003
- Douglas S. Hobbs
- G02 - OPTICS
Information Patent Application
Directional diffuser
- Publication number 20020141065
- Publication date Oct 3, 2002
- James Cowan
- G02 - OPTICS
Information Patent Application
Actively stabilized, single input beam, interference lithography sy...
- Publication number 20010035991
- Publication date Nov 1, 2001
- Douglas S. Hobbs
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

James Cowan

Person

Patents Grantslast 30 patents

Surface relief volume reflective diffractive structure

Surface relief volume reflective diffractive structure

Surface relief volume reflective diffractive structure

Directional diffuser

Actively stabilized, single input beam, interference lithography sy...

Microstructured optical device for remote chemical sensing

Directional diffuser

Optical wavelength resonant device for chemical sensing

Optical device for filtering and sensing

Electro-optic device allowing wavelength tuning

Directional diffuser

Holographic optical data storage medium

Volume phase reflection holograms and methods for fabricating them

Method of forming volume phase reflection holograms

Method of replicating volume phase reflection holograms

Method and apparatus for exposing photosensitive material

Laser apodizing filter

Method for producing a surface relief pattern

Patents Applicationslast 30 patents

SURFACE RELIEF VOLUME REFLECTIVE DIFFRACTIVE STRUCTURE

SURFACE RELIEF VOLUME REFLECTIVE DIFFRACTIVE STRUCTURE

Surface Relief Volume Reflective Diffractive Structure

DIRECTIONAL DIFFUSER

Microstructured optical device for remote chemical sensing

Surface relief structure

Directional diffuser

Directional diffuser

Optical wavelength resonant device for chemical sensing

Optical device for filtering and sensing

Directional diffuser

Actively stabilized, single input beam, interference lithography sy...