US3159691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cis-polybutadiene compositions
Assignee: Phillips Petroleum Co
•
Filing: 1960-12-05
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Granted: 1964-12-01
•
Expires: 1980-12-05
Abstract
No abstract record available.
Inventors
- 👤 Kraus Gerard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:07
CPC Classifications
C; C08; C08L; C08L9/00; C08L2205/00; C08L2205/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
91 words
AS A NEW COMPOSITION OF MATTER, A BLEND OF RUBBERS COMPRISING 60 TO 99 PARTS BY WEIGHT OF A FIRST POLYBUTADIENE CONTAINING IN THE RANGE OF 85 TO 96 PERCENT CIS 1,4ADDITION AND 1 TO 4 PARTS BY WEIGHT OF A SECOND POLYBUTADIENE CONTAINING IN THE RANGE OF 96 TO 99 PERCENT CIS 1,4-ADDITION, SAID SECOND POLYBUTADIENE HAVING A CIS-CONTENT AT LEAST 2 PERCENT GREATER THAN THAT OF SAID FIRST POLYBUTADIENE, THE AFORESAID PARTS BY WEIGHT RANGES BEING BASED ON 100 PARTS BY WEIGHT OF TOTAL RUBBERS CONTAINED IN THE BLEND.
References Cited (Backward Citations)
US3066126A
Cited
US3060989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |