US3533808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Release agents for cellulose casings
Assignee: Union Carbide Canada Ltd
•
Filing: 1968-04-18
•
Granted: 1970-10-13
•
Expires: 1988-04-18
Abstract
No abstract record available.
Inventors
- 👤 Andrew Hepburn Cameron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:20
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735354A
Cited
US1070776A
Cited
US1864244A
Cited
US2709138A
Cited
DE1017899B
Cited
US2901358A
Cited
US2999756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |