Patent US3215758A successfully refreshed from Google Patents.
US3215758A
Expired / Lapsed
US
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Condensation polymers
Assignee: Gulf Oil Corp
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Filing: 1964-11-12
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Granted: 1965-11-02
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Expires: 1984-11-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:30
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
18 words
A THERMOSET SOLID RESINOUS PRODUCT OF REACTION OF STYRENE WITH A POLYESTER OF MONOALLYLDI(BETA-HYDROXYETHYL) ISOCYANURATE AND ADIPIC ACID.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |