US2737533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibition of tetrafluoroethylene polymerization
Assignee: EIDP Inc
•
Filing: 1954-08-03
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Granted: 1956-03-06
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Expires: 1974-08-03
Abstract
No abstract record available.
Inventors
- 👤 Marks Barnard Mitchel
- 👤 Thompson John Brockway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:54
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A COMPOSITIN OF MATTER COMPRISING MONOMERIC TETRAFLUORETHYLENE AND FROM 0.01 TO 10% BY WEIGHT OF THE TETRAFLUOROETHYLENE OF INHIBITOR TO PREVENT POLYMERIZATION THEREOF, SAID INHIBITOR BEING A MEMBER OF THE CLASS CONSISTING OF ALPHA-METHYLVINYLBENZE AND ALPHAMETHYLVINYLMETHYLBENZENES.
Claim 2
Dependent Claim
36 words
A COMPOSITIN OF MATTER COMPRISING MONOMERIC TETRAFLUORETHYLENE AND FROM 0.01 TO 10% BY WEIGHT OF THE TETRAFLUOROETHYLENE OF INHIBITOR TO PREVENT POLYMERIZATION THEREOF, SAID INHIBITOR BEING A MEMBER OF THE CLASS CONSISTING OF ALPHA-METHYLVINYLBENZE AND ALPHAMETHYLVINYLMETHYLBENZENES.
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) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |