US1709569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for rendering gelatin insoluble and its application to various arts
Assignee: PHOTOCHIMIE "ELKA" Ste
•
Filing: 1925-11-11
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Granted: 1929-04-16
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Expires: 1945-11-11
Abstract
No abstract record available.
Inventors
- 👤 Procoudine-Gorsky Serge De
- 👤 Pozniakow Nicolas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:50
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/06; G03C; G03C1/00; G03C1/005; G03C1/015; G03C5/00; G03C5/26; G03C5/29; G03C5/315
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1932-04-15 | 1932-10-15 | 1933-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-04-15 | 1936-10-15 | 1937-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-04-15 | 1940-10-15 | 1941-04-16 | $7700.00 | Window Closed / Lapsed |