US2985620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of perfluorochlorocarbon plastics
Assignee: 3M Co
•
Filing: 1956-08-16
•
Granted: 1961-05-23
•
Expires: 1976-08-16
Abstract
No abstract record available.
Inventors
- 👤 Francis J Honn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:37
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A NOVEL PLASTIC COMPOSITION WITH IMPROVED HEAT STABILITY WHICH COMPRISES AN ADMIXTURE OF A NORMALLY SOLID POLYMER CONSISTING OF ABOVE ABOUT 95 MOL PERCENT TRIFLUOROCHLOROETHYLENE AND CORRESPONDINGLY BELOW ABOUT 5 MOL PERCENT OF VINYLIDENE FLUORIDE, AND A MINOR PROPORTION OF AT LEAST ONE INORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ZINC OXIDE, ZINC SULFIDE, CADMIUM OXIDE, CADMIUM SULFIDE, MERCUIC OXIDE AND MERCURIC SULFIDE.
Claim 2
Dependent Claim
64 words
A NOVEL PLASTIC COMPOSITION WITH IMPROVED HEAT STABILITY WHICH COMPRISES AN ADMIXTURE OF A NORMALLY SOLID POLYMER CONSISTING OF ABOVE ABOUT 95 MOL PERCENT TRIFLUOROCHLOROETHYLENE AND CORRESPONDINGLY BELOW ABOUT 5 MOL PERCENT OF VINYLIDENE FLUORIDE, AND A MINOR PROPORTION OF AT LEAST ONE INORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF ZINC OXIDE, ZINC SULFIDE, CADMIUM OXIDE, CADMIUM SULFIDE, MERCUIC OXIDE AND MERCURIC SULFIDE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |