US3477801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water soluble synthetic tanning agent for producing shrunken grain leather
Assignee: Diamond Shamrock Corp
•
Filing: 1968-04-08
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Granted: 1969-11-11
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Expires: 1988-04-08
Abstract
No abstract record available.
Inventors
- 👤 Stanley A Lipowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:33
CPC Classifications
C; C14; C14C; C14C3/00; C14C3/02; C14C3/08; C14C3/18; C14C3/20; C07; C07C; C07C309/00; C07C309/01; C07C309/28; C07C309/33; C07C309/34; C07C309/35; C07C317/00; C07C317/16; C07C317/22; C08; C08G; C08G8/00; C08G8/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1901536A
Cited
DE750143C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |