US2586357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetrafluoroethylene polymer compositions
Assignee: EIDP Inc
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Filing: 1950-06-30
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Granted: 1952-02-19
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Expires: 1970-06-30
Abstract
No abstract record available.
Inventors
- 👤 Walter E Llewellyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:51
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29B; B29B13/00; C; C08; C08K; C08K5/00; C08K5/01; Y; Y10; Y10S; Y10S417/00; Y10S417/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A NON-AQUEOUS PRESSURE-COALESCING COMPOSITION WHICH COMPRISES TETRAFLUOROETHYLENE POLYMER PARTICLES OF COLLOIDAL SIZE INTIMATELY ADMIXED WITH A HYDROCARBON HAVING A VISCOSITY OF AT LEAST 0.45 CENTIPOISE AT 25* C. AND HAVING A MELTING POINT OF LESS THAN 100* C., SAID TETRAFLUOROETHYLENE POLYMER HAVING A POLYMERIZED TETRAFLUOROETHYLENE CONTENT IN EXCESS OF 85% BY WEIGHT AND HAVING A SINTERING TEMPERATURE IN EXCESS OF 300* C., SAID HYDROCARBON BEING PRESENT IN AN AMOUNT OF 5% TO 50% BASED ON THE COMBINED WEIGHT OF TETRAFLUOROETHYLENE POLYMER AND HYDROCARBON.
Claim 2
Dependent Claim
83 words
A NON-AQUEOUS PRESSURE-COALESCING COMPOSITION WHICH COMPRISES TETRAFLUOROETHYLENE POLYMER PARTICLES OF COLLOIDAL SIZE INTIMATELY ADMIXED WITH A HYDROCARBON HAVING A VISCOSITY OF AT LEAST 0.45 CENTIPOISE AT 25* C. AND HAVING A MELTING POINT OF LESS THAN 100* C., SAID TETRAFLUOROETHYLENE POLYMER HAVING A POLYMERIZED TETRAFLUOROETHYLENE CONTENT IN EXCESS OF 85% BY WEIGHT AND HAVING A SINTERING TEMPERATURE IN EXCESS OF 300* C., SAID HYDROCARBON BEING PRESENT IN AN AMOUNT OF 5% TO 50% BASED ON THE COMBINED WEIGHT OF TETRAFLUOROETHYLENE POLYMER AND HYDROCARBON.
References Cited (Backward Citations)
US2411159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |