US2716615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A dry film composed of carboxymethyl cellulose and dipropylene glycol
Assignee: Hercules Powder Co
•
Filing: 1951-04-06
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Granted: 1955-08-30
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Expires: 1971-04-06
Abstract
No abstract record available.
Inventors
- 👤 Robert S Voris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:19
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08K5/04; C08K5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1899420A
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US1884629A
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US1994597A
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US2108810A
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US2618632A
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US2617800A
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US2653108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-29 | 1959-02-28 | 1959-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-29 | 1963-02-28 | 1963-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-29 | 1967-02-28 | 1967-08-30 | $7700.00 | Window Closed / Lapsed |