Patent US3475113A successfully refreshed from Google Patents.
US3475113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treatment of leather with condensates of aminoplast-sulfonated phenolic compounds
Assignee: Diamond Shamrock Corp
•
Filing: 1966-11-18
•
Granted: 1969-10-28
•
Expires: 1986-11-18
Abstract
No abstract record available.
Inventors
- 👤 Lucien Sellet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:21
CPC Classifications
C; C14; C14C; C14C3/00; C14C3/02; C14C3/08; C14C3/18; C14C3/20; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08G14/08; C14C11/00; C14C11/003; C14C9/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE1142173B
Cited
US3340215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |