Patent US2508799A successfully refreshed from Google Patents.
Patent US3198747A successfully refreshed from Google Patents.
US3198747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid resistant coating for metallic surfaces
Assignee: Pure Oil Co
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Filing: 1961-12-26
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Granted: 1965-08-03
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Expires: 1981-12-26
Abstract
No abstract record available.
Inventors
- 👤 George R Cook
- 👤 Allan A Manteutfel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:27
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A COMPOSITION FOR TREATING BODIES SUBJECT TO ATTACK BY SULFURIC ACID, WHEREBY SULFATE CORROSION PRODUCTS ARE FORMED, CONSISTING OF ABOUT 60-90% BY WEIGHT OF WATER, ABOUT 0.5-6.0% BY WEIGHT OF A WATER-SOLUBLE, ORGANIC WETTING AGENT IN THE FORM OF A WATER SOLUBLE SOAP ADAPTED TO ENHANCE THE PENETRATION OF SAID CORROSION PRODUCTS BY SAID COMPOSITION, ABOUT 0.0004-0.16% BY WEIGHT OF A PH INDICATOR HAVING THE PROPERTY OF CHANGING IN COLOR WHEN ACIDIC MATERIAL CONTACTED WITH SAID COMPOSITION IS NEUTRALIZED, ABOUT 2.5-24% BY WEIGHT OF A BASE, SELECTED FROM THE GROUP CONSITING OF AMMONIUM, ALKALI METAL AND ALKALINE EARTH METAL HYDROXIDES, OXIDES AND CARBONATES, AND AMINES, CAPABLE OF REACTING WITH SULFURIC ACID TO FORM SALTS, AND ABOUT 2.5-24% BY WEIGHT OF AN ORGANOSILICON POLYMER OF THE FORMULA
Claim 2
Dependent Claim
126 words
A COMPOSITION FOR TREATING BODIES SUBJECT TO ATTACK BY SULFURIC ACID, WHEREBY SULFATE CORROSION PRODUCTS ARE FORMED, CONSISTING OF ABOUT 60-90% BY WEIGHT OF WATER, ABOUT 0.5-6.0% BY WEIGHT OF A WATER-SOLUBLE, ORGANIC WETTING AGENT IN THE FORM OF A WATER SOLUBLE SOAP ADAPTED TO ENHANCE THE PENETRATION OF SAID CORROSION PRODUCTS BY SAID COMPOSITION, ABOUT 0.0004-0.16% BY WEIGHT OF A PH INDICATOR HAVING THE PROPERTY OF CHANGING IN COLOR WHEN ACIDIC MATERIAL CONTACTED WITH SAID COMPOSITION IS NEUTRALIZED, ABOUT 2.5-24% BY WEIGHT OF A BASE, SELECTED FROM THE GROUP CONSITING OF AMMONIUM, ALKALI METAL AND ALKALINE EARTH METAL HYDROXIDES, OXIDES AND CARBONATES, AND AMINES, CAPABLE OF REACTING WITH SULFURIC ACID TO FORM SALTS, AND ABOUT 2.5-24% BY WEIGHT OF AN ORGANOSILICON POLYMER OF THE FORMULA
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |