Patent US1577983A successfully refreshed from Google Patents.
US3672943A
Expired / Lapsed
US
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Process for the production of an artificial leather and the resultant product
Assignee: Glanzstoff AG
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Filing: 1970-07-14
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Granted: 1972-06-27
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Expires: 1990-07-14
Abstract
Abstract PRODUCTION OF AN IMITATION OR ARTIFICIAL LEATHER BY IMPREGNATION OF A NON-WOVEN FIBROUS WEB IN SUCCESSIVE OR SEPARATE STEPS WITH A SOLVENT SOLUTION OF AN ELASTOMER SUCH THAT INCREASING CONCENTRATIONS OF THE ELASTOMER ARE SUPPLIED OVER THE THICKNESS OF THE WEB, IMMEDIATELY COAGULATING THE WEB IN A CONVENTIONAL BATH AFTER THE LAST SOLUTION OF THE ELASTOMER HAS BEEN APPLIED AND THEN WASHING AND DRYING THE WEB TO PROVIDE A FIBER-REINFORCED MICROPOROUS ELASTOMERIC STRUCTURE CLOSELY RESEMBLING NATURAL LEATHER.
Inventors
- 👤 Gerhard Seibert
- 👤 Klaus Gerlach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:13
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; D04H1/655; D04H1/42; D04H1/425; D04H1/4258; D04H1/4326; D04H1/4334; D04H1/4382; D04H1/587; D04H1/645; D06; D06N; D06N3/00; D06N3/0086; D06N3/0088; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24438; Y10T428/249921; Y10T428/249924; Y10T428/249933
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |