Patent US3138557A successfully refreshed from Google Patents.
US3138557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and process for removal of coatings base on epoxy resins
Assignee: Purex Corp Ltd
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Filing: 1961-09-05
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Granted: 1964-06-23
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Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 Arden Benjamin
- 👤 Robert B Roessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:27
CPC Classifications
C; C09; C09D; C09D9/00; C09D9/005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
A COATING REMOVER COMPOSITION PARTICULARLY ADAPTED FOR REMOVAL OF COATINGS BASED ON EPOXY RSINS, CONSISTING ESSENTIALLY OF ABOUT 40 TO ABOUT 80% OF CHLORINATED HYDROCARBON LIQUID SOLVENT, ABOUT 0.25 TO ABOUT 15% BY WEIGHT OF HYPOPHOSPHOROUS ACID, ABOUT 0.25 TO ABOUT 15% BY WEIGHT OF WATER, ABOUT 3 TO ABOUT 20% BY WEIGHT OF A COUPLING AGENT OF THE GROUP CONSISTING OF THE LOWER ALIPHATIC ALCOHOLS AND THEIR GLYCOL ETHERS, ABOUT 0.1 TO ABOUT 2% BY WEIGHT OF AN ORGANIC CORROSION INHIBITOR, ABOUT 2 TO ABOUT 10% BY WEIGHT OF A SURFACE ACTIVE AGENT OF THE GROUP CONSISTING OF PETROLEUM SULFONATES AND ALKYL ARYL SULFONATES, AND ABOUT 0.1 TO ABOUT 3% BY WEIGHT OF A WX AS AN EVAPORATION RETARDANT.
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |