Inventor

Joanna L. Jannson

Inventor

Torrance, CA, US

Overview

16→

Patents

1989–2008

Patent span

Physics

Primary field (CPC G)

Patents· 16 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus45%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein13%

G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light6%

G03HHolographic processes or apparatus6%

G06EOptical computing devices6%

G06KGraphical data reading6%

G06VImage or video recognition or understanding6%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices3%

PatentTitleYear

7,317,814'Authentication system and method'2008 6,744,909'Authentication system and method'2004 6,303,276'Method and apparatus for making optical master surface diffusers suitable for producing large format optical components'2001 6,130,730'Backlight assembly for a display'2000 6,072,551'Backlight apparatus for illuminating a display with controlled light output characteristics'2000 5,838,403'Liquid crystal display system with internally reflecting waveguide for backlighting and non-Lambertian diffusing'1998 5,221,957'Nonuniform holographic filter in a spectroscopic system'1993 5,153,670'Holographic Lippmann-Bragg filter in a spectroscopic system'1992 5,083,219'Method and apparatus for recording Lippman holographic mirrors'1992 5,067,788'High modulation rate optical plasmon waveguide modulator'1991 5,026,131'High channel density, broad bandwidth wavelength division multiplexer with highly non-uniform Bragg-Littrow holographic grating'1991 5,018,814'Broadband single-mode optical coupler'1991 4,958,892'Diffraction coherence filter'1990 4,926,412'High channel density wavelength division multiplexer with defined diffracting means positioning'1990 4,898,450'Expanded beam non-imaging fiber optic connector'1990 4,838,630'Holographic planar optical interconnect'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2008Patents assigned to PHYSICAL OPTICS CORP (16)· patent assignee history

1989–1990Based in Redondo Beach, CA, US· patent location history

1990–2008Based in Torrance, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
PHYSICAL OPTICS CORP	16	1989–2008

Locations

Location	Patents	Span
Torrance, California, US	13	1990–2008
Redondo Beach, California, US	3	1989–1990