US2999003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leather tanning agent and process
Assignee: EIDP Inc
•
Filing: 1959-02-06
•
Granted: 1961-09-05
•
Expires: 1979-02-06
Abstract
No abstract record available.
Inventors
- 👤 Haslam John Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:41
CPC Classifications
C; C14; C14C; C14C3/00; C14C3/02; C14C3/04; C14C3/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
13 words
PROCESS FOR CHROME TANNING LEATHER WHICH COMPRISES EMPLOYING TRIS(HYDROXYACETATO) CHROMIATE AS TANNING AGENT.
References Cited (Backward Citations)
US2544667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |