US2784170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-stabilized polychlorotrifluoro-ethylene utilizing metal nitrites
Assignee: Union Carbide Corp
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Filing: 1953-04-23
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Granted: 1957-03-05
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Expires: 1973-04-23
Abstract
No abstract record available.
Inventors
- 👤 Andrew T Walter
- 👤 Donald M Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:21
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A POLYCHLOROTRIFLUOROETHYLENE RESIN STABILIZED AGAINST COLOR DEVELOPMENT AND DEGRADATION OF MELT-VISCOSITY AT MOLDING TEMPERATURE BY THE PRESENCE THEREIN OF ABOUT 0.01 TO 2.5 PARTS PER 100 PARTS OF RESIN, BY WEIGHT, OF A METAL NITRILE.
Claim 2
Dependent Claim
35 words
A POLYCHLOROTRIFLUOROETHYLENE RESIN STABILIZED AGAINST COLOR DEVELOPMENT AND DEGRADATION OF MELT-VISCOSITY AT MOLDING TEMPERATURE BY THE PRESENCE THEREIN OF ABOUT 0.01 TO 2.5 PARTS PER 100 PARTS OF RESIN, BY WEIGHT, OF A METAL NITRILE.
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) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |