Inventor

John E. Wreede

Inventor

Monrovia, CA, US

Overview

57→

Patents

1976–1997

Patent span

Physics

Primary field (CPC G)

Patents· 57 as inventor

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

G03Hprimary

G03HHolographic processes or apparatus40%

G02BOptical elements, systems or apparatus15%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%

G03CPhotosensitive materials for photographic purposes10%

B60QArrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general6%

B42DBooks2%

B44CProducing decorative effects2%

F21SNon-portable lighting devices2%

G11BInformation storage based on relative movement between record carrier and transducer2%

Y10TTechnical subjects covered by former us classification2%

PatentTitleYear

5,606,433'Lamination of multilayer photopolymer holograms'1997 5,602,656'Apparatus and method for monitoring holographic light protection filters'1997 5,555,108'Holographic exposure prism'1996 5,541,825'Dual image CHMSLs without holography'1996 5,519,516'One way holograms'1996 5,499,116'Encoded hologram for producing a machine readable image and a human readable image'1996 5,499,118'System for copying multiple holograms'1996 5,497,251'Combination specular and diffuse image CHMSL'1996 5,495,227'Multiple format holographic CHMSLS'1996 5,471,328'Segmented image holographic disks'1995 5,455,692'Dual image CHMSLS'1995 5,455,693'Display hologram'1995 5,406,395'Holographic parking assistance device'1995 5,401,346'Laminated hologram decals for identification cards and the like'1995 5,387,989'Modified technique for fabricating low noise floodlit CHMSL holograms'1995 5,327,266'Simultaneous multiple exposure holograms using coherence mismatch to prevent crosstalk'1994 5,318,816'Laminated hologram decals for identification cards and the like'1994 5,315,417'Low noise transmission holographic optical element'1994 5,282,066'Multiple layer holograms'1994 5,278,008'Diffraction efficiency control in holographic elements'1994 5,214,425'Superimposed tell-tales'1993 5,210,625'Holographic efficiency adjustment'1993 5,196,951'Reflection holograms without transmission ghosts'1993 5,162,927'High efficiency holograms by multiple-layer holography'1992 5,155,605'Rotating disk with spatially stabilized images'1992 5,138,470'Guard holograms'1992 5,105,287'Reduction of holographic noise with short laser pulses'1992 5,082,337'Filter device employing a holographic element'1992 5,052,765'Scanning fiber optic holographic exposure and feedback system'1991 5,052,764'System and method for forming a holographic exposure with a simulated source'1991 5,016,953'Reduction of noise in computer generated holograms'1991 5,013,584'Method of reducing the permeability of plastic optical articles'1991 4,988,152'Holographic rearview mirror and method of producing same'1991 4,984,856'Holographic exposure system to reduce spurious hologram noise'1991 4,983,003'Alternate methods of side lobe reduction in holograms'1991 4,968,138'System for monitoring intensity during holographic exposure'1990 4,966,426'Reverse light blocking hologram for a center high mounted stoplight'1990 4,960,311'Holographic exposure system for computer generated holograms'1990 4,953,923'System for reducing noise holograms'1990 4,916,593'Remotely illuminated transparent holographic stoplight for automobiles'1990 4,904,554'Gas phase hardening of gelatin holograms'1990 4,878,719'Automotive wheel covers with spatially stabilized images'1989 4,854,674'Process for improving holographic efficiency'1989 4,853,306'Method and apparatus for dehydrating dichromatic gelatin holograms'1989 4,826,290'Method of producing stable holograms in dichromatic gelatin'1989 4,815,800'Flare reduction in holograms'1989 4,808,500'Stabilizing hydrophilic gelatin holograms having improved resistance to swelling'1989 4,799,746'Efficient holograms and method for making same'1989 4,789,211'Hologram stabilizing assembly and method'1988 4,687,720'Side lobe suppression in holograms using pre-exposure'1987 4,478,490'Noise reduction in coherent systems'1984 4,458,978'Double beam systems for forming improved holograms'1984 4,458,977'Systems for forming improved reflection holograms with a single beam'1984 4,456,328'Systems for forming improved diffusion holograms'1984 4,330,604'Fabrication of holograms on plastic substrates'1982 4,329,409'Process for fabricating stable holograms'1982 3,965,461'Thermoplastic image recording system'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to MC DONNELL DOUGLAS CORP (1)· patent assignee history

1976–1994Based in Monrovia, CA, US· patent location history

1982–1997Patents assigned to HUGHES AIRCRAFT CO (56)· patent assignee history

1990Based in Moneovia, CA, US· patent location history

1993–1997Based in Azusa, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HUGHES AIRCRAFT CO	56	1982–1997
MC DONNELL DOUGLAS CORP	1	1976

Locations

Location	Patents	Span
Monrovia, California, US	35	1976–1994
Azusa, California, US	21	1993–1997
Moneovia, California, US	1	1990