US2748084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cleaninq carbonaceous
Assignee: —
•
Filing: —
•
Granted: 1956-05-29
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Expires: 1973-05-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:23
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/18; C11D1/00; C11D1/66; C11D1/72; C11D3/43; C11D2111/00; C11D2111/10; C11D2111/14; C11D2111/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
THE METHOD OF CLEANING ELECTRICAL EQUIPMENT DIRTIED WITH SOIL INCLUDING CARBONACEOUS MATERIAL AND GRAPHITE WHICH COMPRISES WETTING SAID EQUIPMENT WITH AN EMULSION OF WATER AND A GREASE SOLVENT IN WHICH EMULSION THE WATER IS THE DISPERSED PHASE, SAID GREASE SOLVENT COMPRISING A MIXTURE OF HYDROCARBONS ND HALOGENATED ORGANIC COMPOUNDS WHICH ARE IMMISCRIBLE WITH SAID WATER, THE AMOUNT OF WATER IN SAID EMULSION BEING APPROXIMATELY 1% TO 20% BY VOLUME OF THE TOTAL VOLUME OF SAID WATER AND SAID SOLVENT, AND SAID EMULSION CONTAINING AN EMULSIFYING AGENT FREE OF AMINE GROUPS ND INCAPABLE OF CONDUCTING ELECTRICITY IN THE AMOUNT OF FROM ABOUT 2% TO 8% BY VOLUME OF THE TOTAL VOLUME OF SAID EMULSION, ALLOWING SAID EMULSION TO PENETRATE SAID SOIL TO LOOSEN THE GRAPHITE BY INTERFACIAL TENSION BETWEEN THE SOLVENT AND THE WATER, AND SUBSEQUENTLY SUBJECTING SAID EQUIPMENT TO FRESH AMOUNT OF SAID EMULSION.
Claim 2
Independent Claim
144 words
THE METHOD OF CLEANING ELECTRICAL EQUIPMENT DIRTIED WITH SOIL INCLUDING CARBONACEOUS MATERIAL AND GRAPHITE WHICH COMPRISES WETTING SAID EQUIPMENT WITH AN EMULSION OF WATER AND A GREASE SOLVENT IN WHICH EMULSION THE WATER IS THE DISPERSED PHASE, SAID GREASE SOLVENT COMPRISING A MIXTURE OF HYDROCARBONS ND HALOGENATED ORGANIC COMPOUNDS WHICH ARE IMMISCRIBLE WITH SAID WATER, THE AMOUNT OF WATER IN SAID EMULSION BEING APPROXIMATELY 1% TO 20% BY VOLUME OF THE TOTAL VOLUME OF SAID WATER AND SAID SOLVENT, AND SAID EMULSION CONTAINING AN EMULSIFYING AGENT FREE OF AMINE GROUPS ND INCAPABLE OF CONDUCTING ELECTRICITY IN THE AMOUNT OF FROM ABOUT 2% TO 8% BY VOLUME OF THE TOTAL VOLUME OF SAID EMULSION, ALLOWING SAID EMULSION TO PENETRATE SAID SOIL TO LOOSEN THE GRAPHITE BY INTERFACIAL TENSION BETWEEN THE SOLVENT AND THE WATER, AND SUBSEQUENTLY SUBJECTING SAID EQUIPMENT TO FRESH AMOUNT OF SAID EMULSION.
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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |