Patent US3424604A successfully refreshed from Google Patents.
US3424604A
Expired / Lapsed
US
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Method for manufacturing synthetic leather
Assignee: Kuraray Co Ltd
•
Filing: 1964-11-09
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Granted: 1969-01-28
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 Osamu Fukushima
- 👤 Hiroshi Hayanami
- 👤 Kazuo Nagoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:35
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/0002; D06N3/0004; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4282; D04H1/58; D04H1/64; Y; Y10; Y10S; Y10S428/00; Y10S428/904
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2773286A
Cited
US3310505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |