Patent US4502162A successfully refreshed from Google Patents.
Patent US2677674A successfully refreshed from Google Patents.
US2677674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blends of (1) copolymers of styrene with small amounts of divinylbenzene, (2) high styrene-low butadiene resinous copolymers, and (3) rubbery copolymers of 35-60 per cent butadiene and 65-40 per cent styrene
Assignee: Uniroyal Inc
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Filing: 1953-02-13
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Granted: 1954-05-04
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Expires: 1973-02-13
Abstract
No abstract record available.
Inventors
- 👤 Lawrence E Daly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:09
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L25/08; C08L25/10; C08L2205/00; C08L2205/02; C08L9/00; C08L9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A NEW COMPOSITION OF MATTER COMPRISING FROM 40 TO 50% OF A RESIN WHICH IS A COPOLYMER OF STYRENE AND FROM 0.01 TO 2.0% BY WEIGHT OF DIVINYLBENZENE BASED ON MONOMERIC STYRENE, FROM 25 TO 30% OF A RESINOUS COPOLYMER OF FROM 78 TO 65% OF STYRENE AND FROM 22 TO 5% OF BUTADIENE, AND FROM 25 TO 35% OF A RUBBERY COPOLYMER COMPRISING FROM 35 TO 60% OF COMBINED BUTADIENE AND FROM 65 TO 40% OF COMBINED STYRENE, THE PERCENTAGES OF SAID RESIN, SAID RESINOUS COPOLMMER AND SAID RUBBERY COPOLYMER BEING BY WEIGHT BASED ON THESE THREE INGREDIENTS AND TOTALING 100%.
Claim 2
Dependent Claim
102 words
A NEW COMPOSITION OF MATTER COMPRISING FROM 40 TO 50% OF A RESIN WHICH IS A COPOLYMER OF STYRENE AND FROM 0.01 TO 2.0% BY WEIGHT OF DIVINYLBENZENE BASED ON MONOMERIC STYRENE, FROM 25 TO 30% OF A RESINOUS COPOLYMER OF FROM 78 TO 65% OF STYRENE AND FROM 22 TO 5% OF BUTADIENE, AND FROM 25 TO 35% OF A RUBBERY COPOLYMER COMPRISING FROM 35 TO 60% OF COMBINED BUTADIENE AND FROM 65 TO 40% OF COMBINED STYRENE, THE PERCENTAGES OF SAID RESIN, SAID RESINOUS COPOLMMER AND SAID RUBBERY COPOLYMER BEING BY WEIGHT BASED ON THESE THREE INGREDIENTS AND TOTALING 100%.
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) | 1957-05-03 | 1957-11-02 | 1958-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-03 | 1961-11-02 | 1962-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-03 | 1965-11-02 | 1966-05-04 | $7700.00 | Window Closed / Lapsed |