Patent US3245832A successfully refreshed from Google Patents.
US3245832A
Expired / Lapsed
US
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Impregnation of leather with polymer dispersion by application of pressure
Assignee: Armour and Co
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Filing: 1962-11-23
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Granted: 1966-04-12
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 Roger H Doggett
- 👤 Paul A Plassc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:41
CPC Classifications
C; C14; C14C; C14C9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN A PROCESS FOR UNIFYING SHEEPSKIN LEATHER HAVING FLESH AND GRAIN SIDES SEPARATED WITH A POROUS INTERIOR, THE STEPS OF IMMERSING THE LEATHER WITHIN AN EQUEOUS LIQUID BODY CONTAINING AN ELASTOMERIC RESIN MATERIAL CONCENTRATED TO A POINT NEAR ITS PRECIPITATION POINT, AND PRECIPITATING SAID MATERIAL WITHIN THE LEATHER SOLELY BY REPEATEDLY SUBJECTING SAID LEATHER TO PRESSURE AND RELEASE OF PRESSURE.
Claim 2
Dependent Claim
60 words
IN A PROCESS FOR UNIFYING SHEEPSKIN LEATHER HAVING FLESH AND GRAIN SIDES SEPARATED WITH A POROUS INTERIOR, THE STEPS OF IMMERSING THE LEATHER WITHIN AN EQUEOUS LIQUID BODY CONTAINING AN ELASTOMERIC RESIN MATERIAL CONCENTRATED TO A POINT NEAR ITS PRECIPITATION POINT, AND PRECIPITATING SAID MATERIAL WITHIN THE LEATHER SOLELY BY REPEATEDLY SUBJECTING SAID LEATHER TO PRESSURE AND RELEASE OF PRESSURE.
References Cited (Backward Citations)
US949671A
Cited
US1347095A
Cited
US2193861A
Cited
US2220958A
Cited
US2481933A
Cited
FR1022052A
Cited
US2721145A
Cited
US2763577A
Cited
US2843505A
Cited
US2798858A
Cited
US3085068A
Cited
US3049442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |