US3060989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blends of cis-polybutadiene with either natural rubber or cis-polyisoprene, method of preparing same, and tire tread comprising same
Assignee: Phillips Petroleum Co
•
Filing: 1959-08-17
•
Granted: 1962-10-30
•
Expires: 1979-08-17
Abstract
No abstract record available.
Inventors
- 👤 Henry E Railsback
- 👤 Jr Nelson A Stumpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:59
CPC Classifications
C; C08; C08L; C08L7/00; C08L9/00; Y; Y10; Y10S; Y10S152/00; Y10S152/905
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
84 words
AS A NEW COMPOSITION OF MATTER A BLEND OF RUBBERS COMPRISING (1) IN THE RANGE OF 10 TO 90 PARTS BY WEIGHT OF A POLYBUTADIENE FORMED BY CIS 1,4-, TRANS 1,4- AND 1,2ADDITION OF 1,3-BUTADIENE, AT LEAST 75 PERCENT OF SAID POLYBUTADIENE BEING FORMED BY CIS 1,4-ADDITION OF 1,3BUTADIENE AND (2) IN THE RANGE OF 90 TO 10 PARTS BY WEIGHT OF A CIS-POLYISOPRENE, THE AFOREMENTIONED PARTS BY WEIGHT RANGES BEING BASED ON 100 PARTS BY WEIGHT OF TOTAL RUBBERS CONTAINED IN THE BLEND.
Claim 2
Dependent Claim
84 words
AS A NEW COMPOSITION OF MATTER A BLEND OF RUBBERS COMPRISING (1) IN THE RANGE OF 10 TO 90 PARTS BY WEIGHT OF A POLYBUTADIENE FORMED BY CIS 1,4-, TRANS 1,4- AND 1,2ADDITION OF 1,3-BUTADIENE, AT LEAST 75 PERCENT OF SAID POLYBUTADIENE BEING FORMED BY CIS 1,4-ADDITION OF 1,3BUTADIENE AND (2) IN THE RANGE OF 90 TO 10 PARTS BY WEIGHT OF A CIS-POLYISOPRENE, THE AFOREMENTIONED PARTS BY WEIGHT RANGES BEING BASED ON 100 PARTS BY WEIGHT OF TOTAL RUBBERS CONTAINED IN THE BLEND.
Claim 3
Dependent Claim
22 words
IN AN AUTOMOTIVE TIRE COMPRISING A CARCASS AND TREAD, THE IMPROVEMENT WHICH COMPRISES A TREAD PREPARED FROM THE COMPOSITION 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) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |