Inventor
Katsuhiko Hirabayashi
Inventor
Tokyo, JP
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus50%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein50%
PatentTitleYear
6,766,082'Waveguide-type optical device and manufacturing method therefor'20046,545,739'Tunable wavelength filter using nano-sized droplets of liquid crystal dispersed in a polymer'20035,920,664'Board-to-board and unit-to-unit optical interconnection system'19995,648,859'Liquid crystal microprism array, free-space optical interconnector, and optical switch'19975,321,539'Liquid crystal Fabry-Perot etalon with glass spacer'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2004Patents assigned to NIPPON TELEGRAPH & TELEPHONE (5)· patent assignee history
1994–2004Based in Atsugi, JP· patent location history
1997–2003Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NIPPON TELEGRAPH & TELEPHONE | 5 | 1994–2004 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 3 | 1997–2003 |
| Atsugi, JP | 2 | 1994–2004 |