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Patent US3666741A successfully refreshed from Google Patents.
US3666741A
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US
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Electrically conductive fluorocarbon polymer
Assignee: National Aeronautics and Space Administration
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Filing: 1970-01-22
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Granted: 1972-05-30
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Expires: 1990-01-22
Abstract
Abstract Fluorocarbon polymers are impregnated with rhenium or molybdenum by immersion in liquid rhenium hexafluoride or molybdenum hexafluoride. The rhenium and molybdenum fluoride compounds are then hydrolyzed to form conductive oxides. The impregnated polymer is electrically conductive.
Inventors
- 👤 Harold F Leibecki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:16
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/044; C08J2327/00; C08J2327/02; C08J2327/12; Y; Y10; Y10S; Y10S521/00; Y10S521/918
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
24 words
The method of claim 1 wherein the fluorocarbon polymer is selected from the group consisting of polytetrafluoroethylene, chlorotrifluoroethylene, vinylidene fluoride and fluorinated ethylene propylene.
Claim 2
Dependent Claim
18 words
The method of claim 1 wherein the hydrolyzing is accomplished by subjecting the polymer to a water bath.
Claim 3
Dependent Claim
14 words
The method of claim 3 wherein the Water bath temperature is approximately 100* C.
Claim 4
Dependent Claim
18 words
The method of claim 3 and including the additional step of heating the polymer to approximately 250* C.
Claim 5
Dependent Claim
20 words
The method of claim 1 wherein the hydrolyzing is accomplished by disposing the polymer in a water vapor containing gas.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein the polymer is of the spongy type.
References Cited (Backward Citations)
US2865795A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |