Inventor

Pochi A. Yeh

Inventor

Thousand Oaks, CA, US

Overview

37→

Patents

1980–2009

Patent span

Physics

Primary field (CPC G)

Patents· 37 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G02Fprimary

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein32%

G02BOptical elements, systems or apparatus27%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light8%

G01CMeasuring distances, levels or bearings5%

G06EOptical computing devices5%

G03HHolographic processes or apparatus3%

G06VImage or video recognition or understanding3%

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form2%

C09KMaterials for miscellaneous applications, not provided for elsewhere2%

G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light2%

PatentTitleYear

7,527,834'Retardation films for the elimination of leakage of light through cross polarizers in LCD'2009 7,453,640'Liquid crystal display including O-type and E-type polarizer'2008 7,324,181'Non-absorbing polarization color filter and liquid crystal display incorporating the same'2008 7,315,338'Liquid crystal display including O-type and E-type polarizer'2008 7,015,990'Liquid crystal display including O-type and E-type polarizer'2006 6,992,823'Chromatic dispersion compensator'2006 6,982,831'Athermal birefringent optical interleavers with flat-top passbands'2006 6,859,320'Dispersion compensation using resonant cavities'2005 6,721,079'Optical path length tuning methods in etalons'2004 6,429,915'Tilted polarizers for liquid crystal displays'2002 5,396,368'Flexible rejection filter (U)'1995 5,283,672'Holographic techniques for generating high resolution telescopic images'1994 5,196,953'Compensator for liquid crystal display, having two types of layers with different refractive indices alternating'1993 5,132,842'Optical image transformation system'1992 5,037,203'Asymmetric ring laser gyroscope and method for detecting rotation with acentric photorefractive crystal'1991 5,025,488'Optical heterodyne detector'1991 5,006,813'Nonlinear optical doppler imaging amplifier'1991 4,991,177'Laser beam clean-up using mutually pumped phase conjugation'1991 4,971,409'Real-time optical image subtraction'1990 4,968,107'Real time image inversion using four-wave mixing'1990 4,963,725'Adaptive optical neural network'1990 4,960,322'Kerr-Bragg agile beam steering device'1990 4,877,297'Reconfigurable 0ptical interconnect using dynamic hologram'1989 4,767,197'Nonlinear optical matrix manipulation'1988 4,761,059'External beam combining of multiple lasers'1988 4,719,635'Frequency and phase locking method for laser array'1988 4,718,749'Phase-conjugate interferometric coherent image subtraction'1988 4,703,992'Laser beam cleanup by photorefractive two-way mixing'1987 4,681,446'Phase conjugate fiber gyroscope'1987 4,648,092'Phase coupling multiple lasers'1987 4,640,618'Phase conjugate relative position sensor'1987 4,548,479'Isophase birefringent filters'1985 4,501,470'Christiansen-Bragg optical filter'1985 4,500,178'Iso-index birefringent filters'1985 4,269,481'Multiple-cavity electro-optic tunable filter'1981 4,247,166'Single plate birefringent optical filter'1981 4,240,696'Multilayer electro-optically tunable filter'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1995Patents assigned to ROCKWELL INTERNATIONAL CORP (27)· patent assignee history

1980–2009Based in Thousand Oaks, CA, US· patent location history

2002Patents assigned to SANTA BARBARA PHOTONICS INC (1)· patent assignee history

2004Patents assigned to ACCUMUX TECHNOLOGIES INC (1)· patent assignee history

2005–2006Patents assigned to OPLINK COMMUNICATIONS INC (3)· patent assignee history

2006–2009Patents assigned to NITTO DENKO CORP (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ROCKWELL INTERNATIONAL CORP	27	1980–1995
NITTO DENKO CORP	5	2006–2009
OPLINK COMMUNICATIONS INC	3	2005–2006
ACCUMUX TECHNOLOGIES INC	1	2004
SANTA BARBARA PHOTONICS INC	1	2002

Locations

Location	Patents	Span
Thousand Oaks, California, US	37	1980–2009