US2503744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and agent for preventing linting in the dry cleaning of fabrics
Assignee: GREAT LAKES CARBON Corp
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Filing: 1947-08-12
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Granted: 1950-04-11
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Expires: 1967-08-12
Abstract
No abstract record available.
Inventors
- 👤 Jr John W Kenney
- 👤 Pascal M Rapier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:02
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE METHOD OF CONDITIONING A DRY CLEANING SOLVENT TO AVOID LINTING AND DUSTING IN THE DRY CLEANING OF FABRICS WHICH CONSISTS IN CONTACTING SAID SOLVENT WITH A POWDERED DIATOMACEOUS EARTH FILTER AID CONTAINING FROM 0.25% TO 5.0% BY WEIGHT OF AN OLEIC ACID SOAP OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, CALCIUM, ZINC, STRONTIUM, CADMIUM AND BARIUM, AND THEREBY CAUSING SAID SOLVENT TO DISSOLVE SUFFLCIENT OF SAID SOAP TO REDUCE THE RESISTIVITY OF SAID SOLVENT PER CENTIMETRE CUBE TO NOT OVER 250,000 MEGOHMS.
Claim 2
Independent Claim
86 words
THE METHOD OF CONDITIONING A DRY CLEANING SOLVENT TO AVOID LINTING AND DUSTING IN THE DRY CLEANING OF FABRICS WHICH CONSISTS IN CONTACTING SAID SOLVENT WITH A POWDERED DIATOMACEOUS EARTH FILTER AID CONTAINING FROM 0.25% TO 5.0% BY WEIGHT OF AN OLEIC ACID SOAP OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, CALCIUM, ZINC, STRONTIUM, CADMIUM AND BARIUM, AND THEREBY CAUSING SAID SOLVENT TO DISSOLVE SUFFLCIENT OF SAID SOAP TO REDUCE THE RESISTIVITY OF SAID SOLVENT PER CENTIMETRE CUBE TO NOT OVER 250,000 MEGOHMS.
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) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |