US3515718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hypochlorite modified cyanoethylated starch having intact granule form
Assignee: CARL A WILHAM
•
Filing: 1967-07-13
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Granted: 1970-06-02
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Expires: 1987-07-13
Abstract
No abstract record available.
Inventors
- 👤 Charles L Mehltretter
- 👤 Carl A Wilham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:51
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/08; C08B31/12; C08B31/125; C08B31/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2354838A
Cited
US2316128A
Cited
US2316129A
Cited
GB808290A
Cited
US2989521A
Cited
US3264283A
Cited
US3450692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |