US3813361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-discoloring thermosetting polyurethane lacquer
Assignee: ATK Launch Systems LLC
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Filing: 1972-10-16
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Granted: 1974-05-28
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Expires: 1992-10-16
Abstract
Abstract A THERMOSETTING POLYURETHANE LACQUER COMPOSITION IS DISCLOSE COMPRISING (A) A POLYURETHANE, WHICH IS THE REACTION PRODUCT OF AT LEAST ONE POLYOL AND A DIISOCYANATE, AND WHICH HAS BEEN CHAIN EXTENDED, (B) A CROSS-LINKING AMOUNT OF DIMETHYLOLUREA OR DIMETHYLOLETHYLENEUREA, (C) SUITABLE SOLVENTS, AND (D) .003-.03 PARTS OF PHOSPHORIC ACID PER 100 PARTS OF POLYURETHANE SOLVENTS.
Inventors
- 👤 M Gillis
- 👤 M Mazzeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:05
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/833
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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |