US2919213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polytetrafluoroethylene suspensions and method of coating wire with same
Assignee: Sprague Electric Co
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Filing: 1956-05-31
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Granted: 1959-12-29
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Expires: 1976-05-31
Abstract
No abstract record available.
Inventors
- 👤 Henry F Puppolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:46
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D127/18; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/298; Y10T428/31504; Y10T428/3154
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A LIQUID ESSENTIALLY POLYTETRAFLUOROETHYLENE COATING COMPOSITION HAVING POLYETETRAFLUOROETHYLENE RESIN PARTICLES LESS THAN ABOUT 1 MICRON IN SIZE SUSPENDED IN AN AQUEOUS MEDIUM AT A CONCENTRATION OF AT LEAST ABOUT 30 PERCENT BY WEIGHT , SAID MEDIUM CONTAINING A CRESOL IN AN AMOUNT OF FROM ABOUT 1 PERCENT TO ABOUT 3.5 PERCENT OF THE WEIGHT OF THE SUSPENDED RESIN, THE COMPOSITION ALSO INCLUDES A COMPOUND OF THE CLASS CONSISTING OF ALKALI METAL SALTS OF SALICYLIC ACID AND ALKALI METAL SALTS OF PHENOBARBITAL, SAID COMPOUND BEING PRESENT IN AN AMOUNT OF FROM 0.01 PERCENT TO ABOUT 1 PERCENT OF THE WEIGHT OF CRESOL PRESENT
Claim 2
Dependent Claim
96 words
A METHOD OF COATING ELONGATED WIRES WITH POLYTERAFLUOROETHYLENE, WHICH METHOD COMPRISES CONTINUOUSLY PASSING THE WIRE THROUGH AT LEAST ABOUT TWO INCHES OF THE RESIN COATING COMPOSITION OF CLAIM 3 SO AS TO WITHDRAW THE WIRE FROM THE COMPOSITION WITH A QUANTITY OF THE COMPOSITION DEPOSITED UNIFORMLY OVER THE WIRE SURFACE THE PASSING EFFECTED AT A SPEED RANGING FROM ABOUT 100 TO 143 FEET PER MINUTE FOR A 0.5 MIL COATING TO FROM ABOUT 22 TO 40 FEET PER MINUTE FOR A 1.3 MIL COATING AND THEN SINTERING THE RESIN DEPOSIT THUS PICKED UP BY THE WIRE.
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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) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |