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Patent applications and USPTO patent grants for WATAI, KAYOKO.The latest application filed is for "surface light source device and liquid crystal display".
Patent | Date |
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Surface Light Source Device And Liquid Crystal Display App 20020001186 - SASAKO, HIROMI ;   et al. | 2002-01-03 |
Surface light source device and liquid crystal display Grant 6,309,080 - Sasako , et al. October 30, 2 | 2001-10-30 |
Light regulation device Grant 6,275,338 - Arai , et al. August 14, 2 | 2001-08-14 |
Surface light source device Grant 5,971,559 - Ishikawa , et al. October 26, 1 | 1999-10-26 |
Surface light source device of side light type Grant 5,810,464 - Ishikawa , et al. September 22, 1 | 1998-09-22 |
Surface light source device Grant 5,779,338 - Ishikawa , et al. July 14, 1 | 1998-07-14 |
Surface illuminant device Grant 5,772,305 - Ishikawa , et al. June 30, 1 | 1998-06-30 |
Prismatic member with coarsened portions or triangular prismatic and semi-circular prismatic members arranged on a flat light emitting surface Grant 5,600,455 - Ishikawa , et al. February 4, 1 | 1997-02-04 |
Surface light source device Grant 5,575,549 - Ishikawa , et al. November 19, 1 | 1996-11-19 |
Surface light source device Grant 5,572,411 - Watai , et al. November 5, 1 | 1996-11-05 |
Corner supply type plane light source device Grant 5,528,709 - Koike , et al. June 18, 1 | 1996-06-18 |
Surface illuminant device Grant 5,402,324 - Yokoyama , et al. March 28, 1 | 1995-03-28 |
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