US3778408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-retardant,polyurethane coating compositions
Assignee: Zeneca Inc
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Filing: 1970-08-24
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Granted: 1973-12-11
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Expires: 1990-08-24
Abstract
Abstract POLYURETHANE COATING COMPOSITIONS ARE PROVIDED WHICH, AFTER APPLICATION TO SUBSTRATES, YIELD TRANSPARENT COATINGS HAVING SUPERIOR FLAME-RETARDANCY AND RESILIENCY, THE COATING COMPOSITIONS COMPRISE A SOLVENT AND A POLYURETHANE REACTION PRODUCT OF HALOGEN CONTAINING POLYOL, PHOSPHORUS CONTAINING POLYOL, AND ORGANIC POLYISOCYANATE.
Inventors
- 👤 J Burns
- 👤 J Feltzin
- 👤 F Sanderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:24
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/487; C08G18/4879; C08G18/5003; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31558; Y10T428/31591; Y10T428/31598; Y10T428/31605
Claims Analysis
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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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |