US3523925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers prepared from organic polyisocyanates or polyisothiocyanates and amides of certain ketimine blocked polyamines and carboxylic acids
Assignee: General Mills Inc
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Filing: 1969-04-30
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Granted: 1970-08-11
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Expires: 1989-04-30
Abstract
No abstract record available.
Inventors
- 👤 Marwan R Kamal
- 👤 John R Nazy
- 👤 Harold A Wittcoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:29
CPC Classifications
C; C07; C07C; C07C265/00; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/30; C08G18/32; C08G18/3225; C08G18/3253; C08G18/3256; C08G18/38; C08G18/3819; C08G18/3823; C08G18/3825
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3420800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |