Patent US2561158A successfully refreshed from Google Patents.
US2561158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning process especially adapted to remove buffing dirt and/or drawing compounds from metal preparatory to plating operations
Assignee: Motors Liquidation Co
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Filing: 1948-04-10
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Granted: 1951-07-17
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Expires: 1968-04-10
Abstract
No abstract record available.
Inventors
- 👤 Tuttle Charles Derwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:56
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A PROCESS OF CLEANING METAL PARTS WHICH COMPRISES PROVIDING A BATH CONSISTING ESSENTIALLY OF A SOLVENT-EMULSION CLEANER HAVING AN OIL SOLVENT UPPER LAYER AND AN OIL IN WATER EMULSION UNDER LAYER, PASSING THE METAL PARTS INTO SAID BATH THROUGH THE OIL SOLVENT UPPER LAYER, THEN IMMERSING AND SOAKING THE METAL PARTS IN THE OIL IN WATER EMULSION UNDER LAYER, THEN REMOVING THE PARTS FROM THE SOLVENT-EMULSION BATH, THEREAFTER SPRAYING THE PARTS WITH AN INTIMATE MECHANICAL MIXTURE OF TWO SOLUTIONS, THE FIRST OF WHICH SOLUTIONS CONSISTS ESSENTIALLY OF AN AQUEOUS SOLUTION OF AN ALKALI METAL SILICATE AND THE SECOND OF WHICH CONSISTS ESSENTIALLY OF A SOLUTION CONSISTING LARGELY OF MINERAL SPIRITS AND A SMALLER PROPORTION OF A CHLORINATED SOLVENT, AND THEREAFTER SUBJECTING THE PARTS TO HOT CHLORINATED SOLVENT.
Claim 2
Dependent Claim
127 words
A PROCESS OF CLEANING METAL PARTS WHICH COMPRISES PROVIDING A BATH CONSISTING ESSENTIALLY OF A SOLVENT-EMULSION CLEANER HAVING AN OIL SOLVENT UPPER LAYER AND AN OIL IN WATER EMULSION UNDER LAYER, PASSING THE METAL PARTS INTO SAID BATH THROUGH THE OIL SOLVENT UPPER LAYER, THEN IMMERSING AND SOAKING THE METAL PARTS IN THE OIL IN WATER EMULSION UNDER LAYER, THEN REMOVING THE PARTS FROM THE SOLVENT-EMULSION BATH, THEREAFTER SPRAYING THE PARTS WITH AN INTIMATE MECHANICAL MIXTURE OF TWO SOLUTIONS, THE FIRST OF WHICH SOLUTIONS CONSISTS ESSENTIALLY OF AN AQUEOUS SOLUTION OF AN ALKALI METAL SILICATE AND THE SECOND OF WHICH CONSISTS ESSENTIALLY OF A SOLUTION CONSISTING LARGELY OF MINERAL SPIRITS AND A SMALLER PROPORTION OF A CHLORINATED SOLVENT, AND THEREAFTER SUBJECTING THE PARTS TO HOT CHLORINATED SOLVENT.
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) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |