US2950216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dressing leather
Assignee: Bayer AG
•
Filing: 1955-06-01
•
Granted: 1960-08-23
•
Expires: 1975-06-01
Abstract
No abstract record available.
Inventors
- 👤 Kolb Gunter
- 👤 Eitel Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:11
CPC Classifications
C; C14; C14C; C14C11/00; C14C11/003; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24438; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31924; Y10T428/31928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A PROCESS OF DRESSING LEATHER WHICH COMPRISES TREATING THE LEATHER WITH AN AQUEOUS EMULISON OF A COPOLYMER OF AT LEAST 45% WEIGHT OF A CONJUGATED BUTADIENE AND AT LEAST 10% BY WEIGHT OF 1,1-DICHLOROETHENE.
Claim 2
Dependent Claim
34 words
A PROCESS OF DRESSING LEATHER WHICH COMPRISES TREATING THE LEATHER WITH AN AQUEOUS EMULISON OF A COPOLYMER OF AT LEAST 45% WEIGHT OF A CONJUGATED BUTADIENE AND AT LEAST 10% BY WEIGHT OF 1,1-DICHLOROETHENE.
References Cited (Backward Citations)
US1967863A
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US2204520A
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US2477338A
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US2635060A
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US2482073A
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US2711400A
Cited
US2615009A
Cited
US2686764A
Cited
US2721145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |