US3573121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing suede-like artificial leathers
Assignee: Individual
•
Filing: 1968-04-08
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Granted: 1971-03-30
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Expires: 1988-04-08
Abstract
Abstract A PROCESS FOR PRODUCING SUEDE-LIKE ARTIFICIAL LEATHERS WHICH COMPRISES COATING A SOLUTION OF A POLYMER ONTO A FIBROUS BASE MATERIAL, SUPERIMPOSING A FLOCK ON A CARRIER SHEET ON THE POLYMERIC COATING LAYER, SUBJECTING THE RESULTING COMPOSITE SHEET TO TREATMENT WITH A COAGULATION LIQUID AND, AFTER COAGULATION OF THE COATING LAYER INTO A MICROPOROUS STRUCTURE, REMOVING THE CARRIER SHEET FROM THE FLOCKED SHEET MATERIAL.
Inventors
- 👤 Kazuo Fukada
- 👤 Hiroshi Okamoto
- 👤 Yoshihiko Numata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:33
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/0002; D06N3/0015; D06N3/04; D06N3/10; D06N3/12; D06Q; D06Q1/00; D06Q1/12; D06Q1/14; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23943; Y10T428/23986
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |