US2857298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method for cleaning and phosphating metal
Assignee: Individual
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Filing: 1957-09-16
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Granted: 1958-10-21
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Expires: 1977-09-16
Abstract
No abstract record available.
Inventors
- 👤 Chester W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:18
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
AN OPALESCENT TO CLEAR, STABLE LIQUID COMPOSITIONS FOR SIMULTANEOUSLY CLEANING AND PHOSPHATING METAL SURFACES CONSISTING ESSENTIALLY OF ABOUT 50-80 PERCENT OF AN AQUEOUS ACIDIC PHOSPHATING SOLUTION; ABOUT 4-30 PERCENT OF A HYDROCARBON SOLVENT FOR GREASE AND OIL; AND ABOUT 10-30 TOTAL PERCENT OF AN EMULSIFIER AND AN ALKALI METAL ALKYL BENZENE SULFONATE DETERGENT, WHEREIN SAID HYDROCARBON SOLVENT HAS AN INITIAL BOILING POINT OF ABOUT 200*-450*F. AND A FINAL BOILING POINT BELOW ABOUT 700* F. AND WHEREIN THE ALKYL BENZENE SULFONATE PORTION OF SAID DETERGENT HAS A MOLECULAR WEIGHT OF ABOUT 290-420.
Claim 2
Dependent Claim
91 words
AN OPALESCENT TO CLEAR, STABLE LIQUID COMPOSITIONS FOR SIMULTANEOUSLY CLEANING AND PHOSPHATING METAL SURFACES CONSISTING ESSENTIALLY OF ABOUT 50-80 PERCENT OF AN AQUEOUS ACIDIC PHOSPHATING SOLUTION; ABOUT 4-30 PERCENT OF A HYDROCARBON SOLVENT FOR GREASE AND OIL; AND ABOUT 10-30 TOTAL PERCENT OF AN EMULSIFIER AND AN ALKALI METAL ALKYL BENZENE SULFONATE DETERGENT, WHEREIN SAID HYDROCARBON SOLVENT HAS AN INITIAL BOILING POINT OF ABOUT 200*-450*F. AND A FINAL BOILING POINT BELOW ABOUT 700* F. AND WHEREIN THE ALKYL BENZENE SULFONATE PORTION OF SAID DETERGENT HAS A MOLECULAR WEIGHT OF ABOUT 290-420.
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) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |