US3519378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the rapid tanning of medium-weight and heavy leather
Assignee: Bayer AG
•
Filing: 1965-12-20
•
Granted: 1970-07-07
•
Expires: 1985-12-20
Abstract
No abstract record available.
Inventors
- 👤 Wolfhard Luck
- 👤 Bruno Zinz
- 👤 Ernst Komarek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:49
CPC Classifications
C; C14; C14C; C14C3/00; C14C3/02; C14C3/28; C14C3/04; C14C3/06; C14C3/08; C14C3/10; C14C3/12; C14C3/18; C14C3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1327105A
Cited
US1430477A
Cited
GB739312A
Cited
US2997364A
Cited
US3065039A
Cited
US3253879A
Cited
US3254937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |