US2879257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-stabilized polychlorotrifluoroethylene
Assignee: Union Carbide Corp
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Filing: 1956-03-08
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Granted: 1959-03-24
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Expires: 1976-03-08
Abstract
No abstract record available.
Inventors
- 👤 Andrew T Walter
- 👤 Donald M Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:20
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A POLYCHLOROTRIFUORETHYLENE RESIN STABLIZIED AGAINST COLOR DEVELOPMENT AND DEGRADING OF MELT-VISCOSITY AT MOLDING TEMPERATURES BY THE ADDITION THERETO AFTER POLYMERIZATION OF ABOUT 0.01 TO 2.5 PARTS PER 100 PARTS OF RESIN, BY WEIGHT TO A METAL NITRATE OF THE GROUP CONSISTING OF ALKALINE-EARTH METAL AND ALKALI-METAL NITRATES.
Claim 2
Dependent Claim
47 words
A POLYCHLOROTRIFUORETHYLENE RESIN STABLIZIED AGAINST COLOR DEVELOPMENT AND DEGRADING OF MELT-VISCOSITY AT MOLDING TEMPERATURES BY THE ADDITION THERETO AFTER POLYMERIZATION OF ABOUT 0.01 TO 2.5 PARTS PER 100 PARTS OF RESIN, BY WEIGHT TO A METAL NITRATE OF THE GROUP CONSISTING OF ALKALINE-EARTH METAL AND ALKALI-METAL NITRATES.
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) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |