US3213160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blends of synthetic trans-polyisoprene and trans-polybutadiene
Assignee: Phillips Petroleum Co
•
Filing: 1962-09-17
•
Granted: 1965-10-19
•
Expires: 1982-09-17
Abstract
No abstract record available.
Inventors
- 👤 Willie W Crouch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:29
CPC Classifications
C; C08; C08L; C08L9/00; C08L2205/00; C08L2205/02; Y; Y10; Y10S; Y10S260/00; Y10S260/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A COMPOSITION OF MATTER COMPRISING (1) A SYNTHETIC POLYISOPRENE CONTAINING AT LEAST 75 PERCENT TRANS-1,4-ADDITION, AND (2) A SYNTHETIC POLYBUTADIENE CONTAINING AT LEAST 70 PERCENT TRANS 1,4-ADDITION, THE AMOUNT OF SAID POLYBUTADIENE BEING IN THE RANGE OF 0.75 TO 3.0 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID POLYISOPRENE AND SAID POLYBUTADIENE.
Claim 2
Dependent Claim
54 words
A COMPOSITION OF MATTER COMPRISING (1) A SYNTHETIC POLYISOPRENE CONTAINING AT LEAST 75 PERCENT TRANS-1,4-ADDITION, AND (2) A SYNTHETIC POLYBUTADIENE CONTAINING AT LEAST 70 PERCENT TRANS 1,4-ADDITION, THE AMOUNT OF SAID POLYBUTADIENE BEING IN THE RANGE OF 0.75 TO 3.0 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID POLYISOPRENE AND SAID POLYBUTADIENE.
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |