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Patent US2983719A successfully refreshed from Google Patents.
US2983719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat resistant elastomer
Assignee: Bjorksten Research Laboratories Inc
•
Filing: 1956-02-20
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Granted: 1961-05-09
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Expires: 1976-02-20
Abstract
No abstract record available.
Inventors
- 👤 Robert P Cox
- 👤 Karl R Guenther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:40
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F230/00; C08F230/04; C08F230/08; C08F230/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
COPOLYMER OF .5 TO 5% BY WEIGHT OF A CHEMICAL COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
14 words
COPOLYMER OF .5 TO 5% BY WEIGHT OF A CHEMICAL COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US2532583A
Cited
US2628246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |