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US3159604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane coating compositions
Assignee: Zeneca Inc
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Filing: 1960-02-12
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Granted: 1964-12-01
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Expires: 1980-02-12
Abstract
No abstract record available.
Inventors
- 👤 Jr George O Rudkin
- 👤 Joseph E Wilson
- 👤 Michael A Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:52
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4829; C08G18/08; C08G18/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A COATING COMPOSITION COMPRISING FROM 0.5 TO 1.0 HYDROXYL EQUIVALENT OF A POLYOXYPROPYLENE SORBITOL ETHER CONTAINING FROM 10 TO 80 OXYPROPYLENE GROUPS PER MOL AND ONE ISOCYANATE EQUIVALENT OF THE REACTION PRODUCT OF A HYDROXYL TERMINATED ETHYLENE GLYCOL ADIPATE POLYESTER HAVING A MOLECULAR WEIGHT OF ABOUT 3000 WITH A 60% TO 70% STOICHIOMETRIC EXCESS OF AN ARYLENE DIISOCYANATE.
Claim 2
Dependent Claim
58 words
A COATING COMPOSITION COMPRISING FROM 0.5 TO 1.0 HYDROXYL EQUIVALENT OF A POLYOXYPROPYLENE SORBITOL ETHER CONTAINING FROM 10 TO 80 OXYPROPYLENE GROUPS PER MOL AND ONE ISOCYANATE EQUIVALENT OF THE REACTION PRODUCT OF A HYDROXYL TERMINATED ETHYLENE GLYCOL ADIPATE POLYESTER HAVING A MOLECULAR WEIGHT OF ABOUT 3000 WITH A 60% TO 70% STOICHIOMETRIC EXCESS OF AN ARYLENE DIISOCYANATE.
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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |