US3459671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane precursor composition containing an organic halogen and trialkanolamine
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1966-04-27
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Granted: 1969-08-05
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Expires: 1986-04-27
Abstract
No abstract record available.
Inventors
- 👤 Raymond Joseph Marklow
- 👤 John Francis Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:53
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3271; C08G18/3278; C08G18/3281
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2649483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |