Patent US2619477A successfully refreshed from Google Patents.
US2619477A
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Copolymers of dimethyl itaconate and conjugated diolefins
Assignee: Standard Oil Development Co
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Filing: 1949-05-07
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Granted: 1952-11-25
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Expires: 1969-05-07
Abstract
No abstract record available.
Inventors
- 👤 Fred W Banes
- 👤 Arundale Erving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:02
CPC Classifications
C; C08; C08F; C08F222/00; C08F222/10; C08F222/12; C08F222/14; C08F236/00; C08F236/02; C08F236/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A TOUGH THERMOPLASTIC COPOLYMER OF 75 TO 80 PARTS OF DIMETHYL ITACONATE AND 25 TO 20 PARTS OF BUTADIENE-1,3, CHARACTERIZED BY A RAW TENSILE STRENGTH OF 750 TO 900 LBS. PER SQUARE INCH AND AN ULTIMATE ELONGATION BETWEEN 150 AND 250%.
Claim 2
Dependent Claim
41 words
A TOUGH THERMOPLASTIC COPOLYMER OF 75 TO 80 PARTS OF DIMETHYL ITACONATE AND 25 TO 20 PARTS OF BUTADIENE-1,3, CHARACTERIZED BY A RAW TENSILE STRENGTH OF 750 TO 900 LBS. PER SQUARE INCH AND AN ULTIMATE ELONGATION BETWEEN 150 AND 250%.
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) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |