Patent US2744836A successfully refreshed from Google Patents.
US2744836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coating leather
Assignee: BASF SE
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Filing: 1952-06-13
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Granted: 1956-05-08
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Expires: 1972-06-13
Abstract
No abstract record available.
Inventors
- 👤 Schubert Rudolf
- 👤 Otto Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:58
CPC Classifications
C; C14; C14C; C14C11/00; C14C11/003; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31768
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A PROCESS FOR COATING LEATHER WHICH COMPRISES COATING THE LEATHER WITH A SOLUTION OF AN AMMONIUM SALT OF CARBOXYL GROUPS CONTAINING POLYMER OF AN ACRYLIC EATER HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
30 words
A PROCESS FOR COATING LEATHER WHICH COMPRISES COATING THE LEATHER WITH A SOLUTION OF AN AMMONIUM SALT OF CARBOXYL GROUPS CONTAINING POLYMER OF AN ACRYLIC EATER HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2126321A
Cited
US2557266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |