Patent US2763577A successfully refreshed from Google Patents.
US2763577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for impregnating leather and product
Assignee: Individual
•
Filing: 1952-12-19
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Granted: 1956-09-18
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Expires: 1972-12-19
Abstract
No abstract record available.
Inventors
- 👤 Paul F Lawler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:24
CPC Classifications
C; C14; C14C; C14C9/00; Y; Y10; Y10T; Y10T428/00; Y10T428/4935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
PROCESS OF TREATING LIGHTWEIGHT UNFINISHED GRAIN LEATHER WHICH COMPRISES IMPREGNATING SAID LEATHER FROM THE GRAIN SURFACE INWARDLY WITH A LIQUID SOLUTION COMPRISING SYNTHETIC, THERMOPLASTIC, WATER INSOLUBLE RESIN, A PLASTICIZER FOR THE RESIN AND AN ORGANIC SOLVENT FOR THE RESIN AND PLASTICIZER, BY APPLYING SAID SOLUTION TO THE GRAIN SURFACE ONLY OF SAID LEATHER, THE PROPORTION OF PLASTICIZED RESIN IN SAID SOLUTION BEING BETWEEN 15% AND 30% BASED ON WEIGHT OF PLASTICIZED RESIN TO TOTAL VOLUME OF SOLUTION, THE PROPORTIONS OF PLASTICIZER AND SOLVENT BEING SUFFICIENT TO PROVIDE PENETRATION OF THE SOLUTION INTO THE LEATHER TO A DEPTH NOT LESS THAN 15% OF THE AVERAGE THICKNESS OF THE LEATHER AND THE AMOUNT OF SOLUTION APPLIED BEING BETWEEN ABOUT 15% AND 50% OF THE WEIGHT OF THE LEATHER AND SUFFICIENT TO PENETRATE NOT LESS THEN 15% NOR MORE THAN 50% OF THE AVERAGE THICKNESS OF THE LEATHER.
Claim 2
Dependent Claim
145 words
PROCESS OF TREATING LIGHTWEIGHT UNFINISHED GRAIN LEATHER WHICH COMPRISES IMPREGNATING SAID LEATHER FROM THE GRAIN SURFACE INWARDLY WITH A LIQUID SOLUTION COMPRISING SYNTHETIC, THERMOPLASTIC, WATER INSOLUBLE RESIN, A PLASTICIZER FOR THE RESIN AND AN ORGANIC SOLVENT FOR THE RESIN AND PLASTICIZER, BY APPLYING SAID SOLUTION TO THE GRAIN SURFACE ONLY OF SAID LEATHER, THE PROPORTION OF PLASTICIZED RESIN IN SAID SOLUTION BEING BETWEEN 15% AND 30% BASED ON WEIGHT OF PLASTICIZED RESIN TO TOTAL VOLUME OF SOLUTION, THE PROPORTIONS OF PLASTICIZER AND SOLVENT BEING SUFFICIENT TO PROVIDE PENETRATION OF THE SOLUTION INTO THE LEATHER TO A DEPTH NOT LESS THAN 15% OF THE AVERAGE THICKNESS OF THE LEATHER AND THE AMOUNT OF SOLUTION APPLIED BEING BETWEEN ABOUT 15% AND 50% OF THE WEIGHT OF THE LEATHER AND SUFFICIENT TO PENETRATE NOT LESS THEN 15% NOR MORE THAN 50% OF THE AVERAGE THICKNESS OF THE LEATHER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |