Patent US3977481A successfully refreshed from Google Patents.
Patent US3085918A successfully refreshed from Google Patents.
US3085918A
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Cleaning process
Assignee: Imperial Chemical Industries Ltd
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Filing: 1960-05-16
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Granted: 1963-04-16
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Expires: 1980-05-16
Abstract
No abstract record available.
Inventors
- 👤 Sherliker Francis Raymond
- 👤 Ellis Kenneth Charles Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:33
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02806; C23G5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN IMPROVED PROCEDURE FOR REMOVING FROM THE SURFACES OF NON-ABSORBENT ARTICLES TENACIOUSLY ADHERENT CONTAMINANTS WHICH CONSIST MAINILY OF PARTICLES OF METAL AND METAL OXIDES SUSPENDED IN AQUEOUS, FATTY, WAXY AND SOAPY MEDIA AND WHICH ARE NOT FREELY AND RAPIDLY REMOVED BY THE CONVENTIONAL METAL-DEGREASING SOLVENTS, WHICH COMPRISES TREATING THE CONTAMINATED SURFACES, WITH AN AGITATED, INITMATELY COMMINGLED, TWO-PHASE LIQUID SYSTEM CONSISTING ESSENTIALLY OF A CHLORINATED HYDROCARBON CONTAINING DISSOLVED THEREIN 0.001% TO 1% OF ITS WEIGHT OF A CATIONIC SURFACE ACTIVE AGENT AND ALSO CONTAINING MIXED THEREWITH A PROPORTION OF WATER NOT EXCEEDING 5% BY WEIGHT OF THE CHLORINATED HYDROCARBON.
Claim 2
Dependent Claim
98 words
AN IMPROVED PROCEDURE FOR REMOVING FROM THE SURFACES OF NON-ABSORBENT ARTICLES TENACIOUSLY ADHERENT CONTAMINANTS WHICH CONSIST MAINILY OF PARTICLES OF METAL AND METAL OXIDES SUSPENDED IN AQUEOUS, FATTY, WAXY AND SOAPY MEDIA AND WHICH ARE NOT FREELY AND RAPIDLY REMOVED BY THE CONVENTIONAL METAL-DEGREASING SOLVENTS, WHICH COMPRISES TREATING THE CONTAMINATED SURFACES, WITH AN AGITATED, INITMATELY COMMINGLED, TWO-PHASE LIQUID SYSTEM CONSISTING ESSENTIALLY OF A CHLORINATED HYDROCARBON CONTAINING DISSOLVED THEREIN 0.001% TO 1% OF ITS WEIGHT OF A CATIONIC SURFACE ACTIVE AGENT AND ALSO CONTAINING MIXED THEREWITH A PROPORTION OF WATER NOT EXCEEDING 5% BY WEIGHT OF THE CHLORINATED HYDROCARBON.
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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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |