US2622044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating vulcanizable rubber surfaces
Assignee: Sherwin Williams Co
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Filing: 1949-08-02
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Granted: 1952-12-16
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Expires: 1969-08-02
Abstract
No abstract record available.
Inventors
- 👤 Charles R Martens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:59
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0067; B29K; B29K2021/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE METHOD OF TREATING RELATIVELY CONTACTING SUPERIMPOSED VULCANIZABLE RUBBER SURFACES WHICH COMPRISES APPLYING TO THE INTERFACIAL SURFACES A LIQUID HOMOGENEOUS AQUEOUS SOLUTION COMPRISING IN COMBINATION ABOUT EQUAL PARTS OF A WATER SOLUBLE POLYETHYLENE GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT FROM ABOUT 400-10,000, AND A WATER-SOLUBLE POLYVINYL ALCOHOL IN AN AQUEOUS MEDIUM IN A CONCENTRATION OF FROM ABOUT 4% TO ABOUT 10% BY WEIGHT TOTAL SOLIDS, VULCANIZING THE THUS TREATED RELATIVELY CONTACTING SUPERIMPOSED RUBBER SURFACES, AND THEREAFTER SEPARATING THE VULCANIZED RUBBER SURFACES.
Claim 2
Independent Claim
81 words
THE METHOD OF TREATING RELATIVELY CONTACTING SUPERIMPOSED VULCANIZABLE RUBBER SURFACES WHICH COMPRISES APPLYING TO THE INTERFACIAL SURFACES A LIQUID HOMOGENEOUS AQUEOUS SOLUTION COMPRISING IN COMBINATION ABOUT EQUAL PARTS OF A WATER SOLUBLE POLYETHYLENE GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT FROM ABOUT 400-10,000, AND A WATER-SOLUBLE POLYVINYL ALCOHOL IN AN AQUEOUS MEDIUM IN A CONCENTRATION OF FROM ABOUT 4% TO ABOUT 10% BY WEIGHT TOTAL SOLIDS, VULCANIZING THE THUS TREATED RELATIVELY CONTACTING SUPERIMPOSED RUBBER SURFACES, AND THEREAFTER SEPARATING THE VULCANIZED RUBBER SURFACES.
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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) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |