US3487050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low toxicity polyurethane composition produced from long chain aliphatic diisocyanates
Assignee: Armour Industrial Chemical Co
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Filing: 1968-02-20
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Granted: 1969-12-30
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Expires: 1988-02-20
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Castro
- 👤 Layton F Kinney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:41
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/2045; C08G18/2063; C08G18/28; C08G18/40; C08G18/42; C08G18/70; C08G18/72; C08G18/73
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |