US2876131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating of fibrous structrues with tetrafluoroethylene polymer
Assignee: EIDP Inc
•
Filing: 1954-11-23
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Granted: 1959-03-03
•
Expires: 1974-11-23
Abstract
No abstract record available.
Inventors
- 👤 Kumnick Miles Charles
- 👤 Lontz John Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:28
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/244; D06M15/256
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR OBTAINING FIBROUS STRUCTURES COATED WITH TETRAFLUOROETHYLENE POLYMER WHICH COMPRISES COATING SAID STRUCTURES WITH AN AQUEOUS COLLOIDAL GEL, OBTAINED BY ADDING TO AN AQUEOUS COLLOIDAL DISPERSION OF TETRAFLUOROETHYLENE POLYMFER, CONTAINING FROM 10 TO 50% OF THE TETRAFLUORETHLENE POLYMER, BASED ON THE WEIGHT OF THE WATER, SAID DISPERSION CONTAINING AN ALKYL ARYL POLYETHER ALCOHOL DISPERSING-AGENT, FROM 10 TO 25%, BASED ON THE WEIGHT OF SAID DISPERSION, OF A WATER-MISCIBLE OXYGENATED ALIPHATIC CMPOUND BOILING BELOW 200*C. AND BAKING THE RESULTING SURFACE IMPREGNATED FIBROUS STRUCTURE ABOVE 100*C. AND BELOW THE DECOMPOSITION TEMPERATURE OF THE FIBROUS MATERIAL UNTIL ALL OF THE SOLVENT IS REMOVED.
Claim 2
Dependent Claim
102 words
A PROCESS FOR OBTAINING FIBROUS STRUCTURES COATED WITH TETRAFLUOROETHYLENE POLYMER WHICH COMPRISES COATING SAID STRUCTURES WITH AN AQUEOUS COLLOIDAL GEL, OBTAINED BY ADDING TO AN AQUEOUS COLLOIDAL DISPERSION OF TETRAFLUOROETHYLENE POLYMFER, CONTAINING FROM 10 TO 50% OF THE TETRAFLUORETHLENE POLYMER, BASED ON THE WEIGHT OF THE WATER, SAID DISPERSION CONTAINING AN ALKYL ARYL POLYETHER ALCOHOL DISPERSING-AGENT, FROM 10 TO 25%, BASED ON THE WEIGHT OF SAID DISPERSION, OF A WATER-MISCIBLE OXYGENATED ALIPHATIC CMPOUND BOILING BELOW 200*C. AND BAKING THE RESULTING SURFACE IMPREGNATED FIBROUS STRUCTURE ABOVE 100*C. AND BELOW THE DECOMPOSITION TEMPERATURE OF THE FIBROUS MATERIAL UNTIL ALL OF THE SOLVENT IS REMOVED.
References Cited (Backward Citations)
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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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |