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Patent US3629319A successfully refreshed from Google Patents.
US3629319A
Expired / Lapsed
US
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Urethane diisocyanates
Assignee: General Mills Inc
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Filing: 1968-09-11
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Granted: 1971-12-21
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Expires: 1988-09-11
Abstract
Abstract COMPOUNDS HAVING THE GENERAL FORMULA OCN-((CH2)Y-D-(CH2)Y-NH-COO-Q-OOC-NH)X-(CH2)Y-D-(CH2)Y-NCO WHERE Y IS 0 OR 1, X IS 1 TO ABOUT 10, D IS THE DIVALENT HYDROCARBON GROUP OF DIMERIZED FAT ACIDS AND Q IS THE DIVALENT GROUP OF A DIOL CONTAINING ETHER LINKAGES. COMPOUNDS AS ABOVE WHERE THE -N=C=O GROUPS ARE BLOCKED, PREFERABLY BY REACTION WITH CERTAIN OXIMES. TREATMENT OF FIBROUS MATERIALS WITH SUCH COMPOUNDS.
Inventors
- 👤 Charles W Jonaitis
- 👤 Lyle E Elmquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:48
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08G18/4837; C08G18/4841; C08G18/70; C08G18/72; C08G18/74; C08G18/75
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |