US2838471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of surface crazing of rubber-resin blends by aromatic polyamines
Assignee: Uniroyal Inc
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Filing: 1954-05-18
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Granted: 1958-06-10
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Expires: 1974-05-18
Abstract
No abstract record available.
Inventors
- 👤 Dean E Peterson
- 👤 Jr William F Brucksch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:34
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A POLYBLEND OF APPROXIMATELY 50 TO 10 PERCENT BY WEIGHT OF A BUTADIENE-ACRYLONITRILE RUBBERY COPOLYMER AND APPROXIMATELY 50 TO 90 PERCENT BY WEIGHT OF A STYRENEACRYLONITRILE RESINOUS COPOLYMER CONTAINING, BY WEIGHT, FROM ABOUT 0.1 TO 5.0 PARTS PER 100 PARTS OF THE POLYBLEND, OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF DIPRIMARY AROMATIC AMINES AND THEIR SALTS.
Claim 2
Dependent Claim
58 words
A POLYBLEND OF APPROXIMATELY 50 TO 10 PERCENT BY WEIGHT OF A BUTADIENE-ACRYLONITRILE RUBBERY COPOLYMER AND APPROXIMATELY 50 TO 90 PERCENT BY WEIGHT OF A STYRENEACRYLONITRILE RESINOUS COPOLYMER CONTAINING, BY WEIGHT, FROM ABOUT 0.1 TO 5.0 PARTS PER 100 PARTS OF THE POLYBLEND, OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF DIPRIMARY AROMATIC AMINES AND THEIR SALTS.
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) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |