US3579372A
Expired / Lapsed
US
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Deposition of microporous film employing dielectric heating
Assignee: Tenneco Polymers Inc
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Filing: 1968-12-04
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Granted: 1971-05-18
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Expires: 1988-12-04
Abstract
Abstract DESCRIBES PROCEDURE FOR DEPOSITION OF MICROPOROUS GRAIN LAYER IN AND ON A SUBSTRATE FOR THE PRODUCTION OF LEATHER REPLACEMENT PRODUCTS IN WHICH A SUBSTRATE WHICH IS COATED WITH A SOLUTION OF A POLYMER AND WETTED WITH WATER IS EXPOSED TO DIELECTRIC HEATING TO VAPORIZE THE WATER. THE VAPORS MIX WITH THE ORGANIC SOLUTION AND EFFECT DEPOSITION OF THE POLYMER.
Inventors
- 👤 Lawrence W Healy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:18
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24438
Claims Analysis
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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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |