US3331819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers
Assignee: Phillips Petroleum Co
•
Filing: 1963-10-17
•
Granted: 1967-07-18
•
Expires: 1983-10-17
Abstract
No abstract record available.
Inventors
- 👤 James D Spainhour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:26
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/20; C08G75/205; C08G75/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
20 words
A PROCESS FOR FORMING RESINS FROM SO2 AND NONCONJUGATED POLYENES WHICH COMPRISES REACTING A CYCLIC NONCONJUGATED POLYENE OF THE FORMULA
Claim 2
Dependent Claim
20 words
A PROCESS FOR FORMING RESINS FROM SO2 AND NONCONJUGATED POLYENES WHICH COMPRISES REACTING A CYCLIC NONCONJUGATED POLYENE OF THE FORMULA
Claim 3
Dependent Claim
10 words
SO2 POLYENE RESINS PRODUCED BY THE PROCESS OF CLAIM 1.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |