Patent US5215104A successfully refreshed from Google Patents.
Patent US2879178A successfully refreshed from Google Patents.
US2879178A
Expired / Lapsed
US
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Coated leather products and methods for producing them
Assignee: Rohm and Haas Co
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Filing: 1956-06-29
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Granted: 1959-03-24
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Expires: 1976-06-29
Abstract
No abstract record available.
Inventors
- 👤 Paul W Mcwherter
- 👤 Benjamin B Kine
- 👤 Hugo A Alps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:28
CPC Classifications
C; C14; C14C; C14C11/00; C14C11/003; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31928; Y10T428/31938
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
127 words
AS AN ARTICLE OF MANUFACTURE, A LEATHER HAVING A MULTI-LAYER COATING THEREON, ONE LAYER OF WHICH COMPRISES A PIGMENTED WATER-INSOLUBLE LINEAR POLYMER, HAVING AN APPARENT SECOND ORDER TRANSITION TEMPERATURE FROM -50*C. TO -10*C., OF ABOUT 3 TO 15% BY WEIGHT OF DIMETHYLAMINOETHYL VINYL ETHER AND 97 TO 85% RESPECTIVELY OF AT LEAST ONE ALKYL ESTER OF ACRYLIC ACID IN WHICH THE ALKYL GROUP HAS 1 TO 4 CARBON ATOMS, SAID COATING CONTAINING 10 TO 150% BY WEIGHT, BASED ON THE WEIGHT OF THE POLYMER, OF A PIGMENT, THE AMOUNT OF POLYMER IN THE COATING BEING FROM 1 TO 15 POUNDS PER THOUSAND SQUARE FEET OF THE LEATHER, AND SUPERIMPOSED ON SAID LAYER, A PIGMENTED LACQUER COATING COMPRISING A VINYL RESIN AND A PLASTICIZER FOR THE VINYL RESIN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |