Patent US4238809A successfully refreshed from Google Patents.
Patent US3418188A successfully refreshed from Google Patents.
US3418188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing patent leather
Assignee: Dunlop Rubber Co Ltd
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Filing: 1963-05-01
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Granted: 1968-12-24
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Expires: 1983-05-01
Abstract
No abstract record available.
Inventors
- 👤 Hogg Wilfrid Henry
- 👤 Ford Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:02
CPC Classifications
C; C14; C14C; C14C11/00; C14C11/003; C14C11/006; B; B05; B05D; B05D1/00; B05D1/28; B05D1/286; B05D7/00; B05D7/12; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31558
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A METHOD FOR THE PRODUCTION OF PATENT LEATHER WHICH COMPRISES APPLYING A LAYER OF A CURABLE, LIQUID, POLYMER COMPOSITION TO A SMOOTH SUPPORTING SURFACE, PARTIALLY CURING SAID COMPOSITION, APPLYING LEATHER TO SAID PARTIALLY CURED FILM SO OBTAINED, COMPLETING THE CURE OF SAID FILM, AND REALEASING THE CURED FILM ADHERING TO THE LEATHER FROM SAID SUPPORTING SURFACE.
Claim 2
Independent Claim
56 words
A METHOD FOR THE PRODUCTION OF PATENT LEATHER WHICH COMPRISES APPLYING A LAYER OF A CURABLE, LIQUID, POLYMER COMPOSITION TO A SMOOTH SUPPORTING SURFACE, PARTIALLY CURING SAID COMPOSITION, APPLYING LEATHER TO SAID PARTIALLY CURED FILM SO OBTAINED, COMPLETING THE CURE OF SAID FILM, AND REALEASING THE CURED FILM ADHERING TO THE LEATHER FROM SAID SUPPORTING SURFACE.
References Cited (Backward Citations)
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Cited
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GB540530A
Cited
US3009847A
Cited
US3030249A
Cited
US3054716A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |