US2634256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified olefin-diolefin resin
Assignee: Standard Oil Development Co
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Filing: 1949-02-15
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Granted: 1953-04-07
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Expires: 1969-02-15
Abstract
No abstract record available.
Inventors
- 👤 William J Sparks
- 👤 David W Young
- 👤 John D Garber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:30
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/28; C07; C07C; C07C51/00; C07C51/54; C07C51/567
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A COMPOSITION OF MATTER COMPRISING A SOLID, SOMEWHAT BRITTLE, NON-ELASTOMERIC RESIN COMPOSED OF AT LEAST 50% OF COPOLYMERIZED BUTADIENE WITH NOT MORE THAN 50% OPF COPOLYMERIZED DISOBUTYLENE, AND HAVING AN IODINE NUMBER WITHIN THE RANGE BETWEEN 60 AND 250, AND MOLECULAR WEIGHT WITHIN THE RANGE BETWEEN 500 AND 20,000, TOGETHER WITH MALEIC ANHYDRIDE COMBINED WITH THE RESIDUAL DOUBLE BONDS OF THE COPOLYMERIZED RESIN.
Claim 2
Dependent Claim
63 words
A COMPOSITION OF MATTER COMPRISING A SOLID, SOMEWHAT BRITTLE, NON-ELASTOMERIC RESIN COMPOSED OF AT LEAST 50% OF COPOLYMERIZED BUTADIENE WITH NOT MORE THAN 50% OPF COPOLYMERIZED DISOBUTYLENE, AND HAVING AN IODINE NUMBER WITHIN THE RANGE BETWEEN 60 AND 250, AND MOLECULAR WEIGHT WITHIN THE RANGE BETWEEN 500 AND 20,000, TOGETHER WITH MALEIC ANHYDRIDE COMBINED WITH THE RESIDUAL DOUBLE BONDS OF THE COPOLYMERIZED RESIN.
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) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |