US2713562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ternary polymer compositions
Assignee: Bridgestone Firestone Inc
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Filing: 1953-03-18
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Granted: 1955-07-19
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Expires: 1973-03-18
Abstract
No abstract record available.
Inventors
- 👤 Robert J Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:37
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L7/00; C08L9/00; C08L9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A HARD, TOUGH, HOMOGENOUS MIXTURE OF (A) 60-080% OF A STYRENE-ACRYLONITRILE COPOLYMER CONTAINING 55-80% OF STYRENE, (B) 8-32% OF A BUTADIENE-ACRYLONITRILE COPOLYMER CONTAINING 55-85% OF BUTADIENE, (C) 8-32% OF HEVEA NATURAL RUBBER; THE AFORESAID PERCENTAGES OF (A), (B) AND (C) BEING BASED ON THE TOTAL OF THEIR WEIGHTS IN THE MIXTURE.
Claim 2
Dependent Claim
51 words
A HARD, TOUGH, HOMOGENOUS MIXTURE OF (A) 60-080% OF A STYRENE-ACRYLONITRILE COPOLYMER CONTAINING 55-80% OF STYRENE, (B) 8-32% OF A BUTADIENE-ACRYLONITRILE COPOLYMER CONTAINING 55-85% OF BUTADIENE, (C) 8-32% OF HEVEA NATURAL RUBBER; THE AFORESAID PERCENTAGES OF (A), (B) AND (C) BEING BASED ON THE TOTAL OF THEIR WEIGHTS IN THE MIXTURE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-18 | 1959-01-17 | 1959-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-18 | 1963-01-17 | 1963-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-18 | 1967-01-17 | 1967-07-19 | $7700.00 | Window Closed / Lapsed |