US3598799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lactone copolymers
Assignee: Phillips Petroleum Co
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Filing: 1969-12-10
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Granted: 1971-08-10
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Expires: 1989-12-10
Abstract
Abstract COPOLYMERS CONTAINING LACTONES ARE PREPARED BY A POLYMERIZATION PROCESS THAT EMBODIES THE ADDITION OF AN ISOCYANATE ADJUVANT THAT INCREASES THE CONVERSION OF LACTONE MONOMER AND PROVIDES A LACTONE COPOLYMER POSSESSING EXCELLENT GREEN TENSILE STRENGTH.
Inventors
- 👤 Floyd E Naylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:06
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4266; C08G18/4269; C08G85/00
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |