US4066338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrooptic light modulator
Assignee: Hagiwara Electric Holdings Co Ltd
•
Filing: 1976-04-16
•
Granted: 1978-01-03
•
Expires: 1996-04-16
Abstract
No abstract record available.
Inventors
- 👤 Shuzo Hattori
- 👤 Tadao Hiramatsu
- 👤 Sunao Katayama
- 👤 Hidenori Ozawa
- 👤 Yasuyuki Hiraiwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:44
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/29; G02F1/292; H; H01; H01F; H01F10/00; H01F10/08; H01F10/10; H01F10/18; H01F10/20; H01F10/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3887885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-02 | 1981-07-04 | 1982-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-02 | 1985-07-04 | 1986-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-02 | 1989-07-04 | 1990-01-03 | $7700.00 | Window Closed / Lapsed |