US3454533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating compositions comprising solutions of isocyanate-terminated polyurethanes and polyisocyanates containing isocyanurate rings
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1966-05-31
•
Granted: 1969-07-08
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Expires: 1986-05-31
Abstract
No abstract record available.
Inventors
- 👤 Vincent Kerrigan
- 👤 Gordon Trappe
- 👤 William Ian Williamson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:25
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/79; C08G18/791; C08G18/08; C08G18/10; Y; Y10; Y10S; Y10S528/00; Y10S528/905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA635894A
Cited
US3075979A
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CA750482A
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US2929800A
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US3115479A
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US2801244A
Cited
US2978449A
Cited
US3135711A
Cited
US3252942A
Cited
US3248372A
Cited
US3280066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |