Inventor

Tomoki Gunjima

Inventor

Yokohama, JP

Overview

1976–2011

Patent span

Physics

Primary field (CPC G)

Patents· 39 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 therein18%

C09KMaterials for miscellaneous applications, not provided for elsewhere9%

G02BOptical elements, systems or apparatus9%

C08JWorking-up8%

G11BInformation storage based on relative movement between record carrier and transducer7%

H04NPictorial communication, e.g. television7%

C25BElectrolytic or electrophoretic processes for the production of compounds or non-metals6%

Y10TTechnical subjects covered by former us classification6%

B01DSeparation5%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds4%

PatentTitleYear

7,986,606'Optical head device'2011 7,738,346'Polarizing diffraction element and optical head device'2010 7,534,370'Polymerizable liquid crystal composition, optical anisotropic material, optical element and optical head device'2009 RE038305'LCD device including an illumination device having a polarized light separating sheet between a light guide and the display'2003 6,562,259'Acrylic acid derivative compounds and polymeric liquid crystal obtained by polymerizing the same'2003 6,304,312'Optical head, method of manufacturing the same, and diffraction element suitable therefor'2001 RE037377'LCD device including an illumination device having a polarized light separating sheet between a light guide and the display'2001 6,271,966'Optical head device including an optically anisotropic diffraction grating and process for its production'2001 6,180,028'Liquid-crystal composition and polymeric liquid crystal obtained by polymerizing the same'2001 6,122,021'Liquid crystal display element and a projection type liquid crystal display apparatus'2000 6,118,586'Optical head device including an optically anisotropic diffraction grating and production method thereof'2000 6,018,378'Liquid crystal/polymer composite with high optical anisotropy and low dielectric anisotropy to lower hysteresis exhibiting transparent and light scattering states'2000 5,587,816'LCD device including an illumination device having a polarized light separating sheet between a light guide and the display'1996 5,386,306'Active matrix liquid crystal display element and projection type active matrix liquid crystal display device'1995 5,379,137'Liquid crystal display element and a projection type liquid crystal display apparatus'1995 5,274,480'Projection type display apparatus having an aperture stop means including non-circular openings'1993 5,264,953'Liquid crystal display apparatus for providing a gray scale and a projection type liquid crystal display apparatus'1993 5,245,449'Polymer dispersed liquid crystal color projection display apparatus'1993 5,235,445'Liquid crystal optical element with liquid crystal in polymer matrix with particular modulus of elasticity'1993 5,216,531'Projection type active matrix polymer dispersed liquid crystal display apparatus with particles of liquid crystal material randomly oriented'1993 5,206,746'Transparent-scattering type optical device including a prism with a triangular longitudinal cross section'1993 5,196,952'Liquid crystal display element and a projection type liquid crystal display apparatus'1993 5,162,934'Method of manufacturing liquid crystal display element'1992 5,103,327'Active matrix liquid crystal display element and a projection type active matrix liquid crystal display apparatus'1992 4,834,509'Liquid crystal optical device and process for its production and method for its operation'1989 4,818,070'Liquid crystal optical device using U.V.-cured polymer dispersions and process for its production'1989 4,764,619'Optically active compounds, smectic liquid crystal compositions containing them and smectic liquid crystal display devices'1988 4,528,058'Method of bonding ion exchange membrane of fluorinated polymer to synthetic resin'1985 4,514,044'1-(Trans-4-alkylcyclohexyl)-2-(trans-4\'-(p-substituted phenyl) cyclohexyl)ethane and liquid crystal mixture'1985 4,389,494'Process for producing a membrane for electrolysis by forming removable thin layer upon electrode'1983 4,318,785'Method of bonding cation exchange membrane of fluorinated polymer'1982 4,255,523'Cation exchange membrane of fluorinated polymer for electrolysis and preparation thereof'1981 4,225,400'Method of bonding cation exchange membrane of fluorinated polymer'1980 4,218,542'Cation exchange membrane of fluorinated polymer containing polytetrafluoroethylene fibrils for electrolysis and preparation thereof'1980 4,206,022'Method of bonding cation exchange membrane of fluorinated polymer'1980 4,126,588'Fluorinated cation exchange membrane and use thereof in electrolysis of alkali metal halide'1978 4,115,240'Method of regenerating electrochemical properties of cation exchange membrane of fluorinated polymer'1978 4,051,002'Electrodialysis for aqueous solution of base'1977 3,947,351'Acid diffusion-dialysis process utilizing anion exchange membrane of 4-55 micron thickness'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2011Patents assigned to ASAHI GLASS CO LTD (35)· patent assignee history

1976–2001Based in Yokohama, JP· patent location history

1982Patents assigned to ASHAI GLASS COMPANY LIMITED (1)· patent assignee history

1993–1995Patents assigned to AG TECHNOLOGY CORP (3)· patent assignee history

2001Based in Yokohama-shi, JP· patent location history

2003–2009Based in Chikushino, JP· patent location history

2010–2011Based in Koriyama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ASAHI GLASS CO LTD	35	1976–2011
AG TECHNOLOGY CORP	3	1993–1995
ASHAI GLASS COMPANY LIMITED	1	1982

Locations

Location	Patents	Span
Yokohama, JP	33	1976–2001
Chikushino, JP	3	2003–2009
Koriyama, JP	2	2010–2011
Yokohama-shi, JP	1	2001