Patent US2398101A successfully refreshed from Google Patents.
US3547646A
Expired / Lapsed
US
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Light-sensitive imaging material containing hydrazones
Assignee: Keuffel and Esser Co
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Filing: 1967-12-18
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Granted: 1970-12-15
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Expires: 1987-12-18
Abstract
No abstract record available.
Inventors
- 👤 Haruo Hori
- 👤 Masahiko Taguchi
- 👤 Shoichiro Hoshino
- 👤 Akira Kato
- 👤 Keiichi Yumiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:17
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/675
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |