Patent US3304286A successfully refreshed from Google Patents.
US3304286A
Expired / Lapsed
US
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Polyester-polyisocyanate materials and coatings obtained therefrom
Assignee: Nopco Chemical Co
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Filing: 1963-01-29
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Granted: 1967-02-14
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Expires: 1983-01-29
Abstract
No abstract record available.
Inventors
- 👤 Altscher Siegfried
- 👤 Morris N Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:53
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4205; C08G18/4208; C08G18/4222; C08G63/00; C08G63/66; C08G63/668
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
55 words
A POLYESTER PREPOLYMER SOLUBLE IN A NON-POLAR SOLVENTS COMPRISING THE REACTION PRODUCT OF (A) A POLYESTER HAVING FREE AND UNRECTED HYDROXYL GROUPS, SAID POLYESTER BEING THE REACTION PRODUCT OF (1) A COMPONENT CONTAINING FREE HYDROXY GROUPS. SAID COMPONENT COMPRISING AT LEAST 60% BY WEIGHT OF SAID HYDROXY COMPONEMENT, OF AN AROMATIC GLYCOL HAVING THE STRUCTUREF
Claim 2
Dependent Claim
55 words
A POLYESTER PREPOLYMER SOLUBLE IN A NON-POLAR SOLVENTS COMPRISING THE REACTION PRODUCT OF (A) A POLYESTER HAVING FREE AND UNRECTED HYDROXYL GROUPS, SAID POLYESTER BEING THE REACTION PRODUCT OF (1) A COMPONENT CONTAINING FREE HYDROXY GROUPS. SAID COMPONENT COMPRISING AT LEAST 60% BY WEIGHT OF SAID HYDROXY COMPONEMENT, OF AN AROMATIC GLYCOL HAVING THE STRUCTUREF
Claim 3
Dependent Claim
15 words
A HARD FLEXIBLE COATING ACCORDING TO CLAIM 12 WHEREIN SAID ORGANIC SUBSTANCE IS A POLLYOL.
Claim 4
Dependent Claim
15 words
A HARD FLEXIBLE COATING ACCORDING TO CLAIM 12 WHEREIN SAID ORGANIC SUBSTANCE IS A GLYCOL.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |