Patent US4932386A successfully refreshed from Google Patents.
Patent US3057748A successfully refreshed from Google Patents.
US3057748A
Expired / Lapsed
US
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Method of dry cleaning and rendering fabrics water repellent
Assignee: Pennwalt Corp
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Filing: 1958-07-14
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Granted: 1962-10-09
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Expires: 1978-07-14
Abstract
No abstract record available.
Inventors
- 👤 Julian L Staubly
- 👤 James H Koob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:44
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/04; D06M; D06M13/00; D06M13/02; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A METHOD FOR IMPARTING WATER REPELLENCY TO FABRICS IN THE COURSE OF A DRY CLEANILNG OPERATION COMPRISING THE STEPS OF IMMERSING THE FABRICS IN A DRY CLEANING SOL VENT SELECTED FROM THE CLASS CONSISTING OF HYDROCARBON AND HALOGENATED HYDROCARBON SOLVENTS CONTAINING FROM 3% TO 8% BY WEIGHT OF A WATER REPELLENCY COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF A PARAFFIN WAX HAVING A MELTING POINT OF FROM 105* TO 155*F. AND A THERMOPLASTIC TERPENE RESIN HAVING A SOFTENING POINT BY THE BALLRING METHOD OF FROM 40* TO 140*C. AND PREPARED BY THE POLYMERIZATION OF TERPENSE OF THE GENERAL FORMULA C10H16, THE WEIGHT RATIO OF RESIN:WAX IN SAID COMPOSITION BEING IN THE RANGE OF FROM 1:4 TO 2:1.
Claim 2
Independent Claim
117 words
A METHOD FOR IMPARTING WATER REPELLENCY TO FABRICS IN THE COURSE OF A DRY CLEANILNG OPERATION COMPRISING THE STEPS OF IMMERSING THE FABRICS IN A DRY CLEANING SOL VENT SELECTED FROM THE CLASS CONSISTING OF HYDROCARBON AND HALOGENATED HYDROCARBON SOLVENTS CONTAINING FROM 3% TO 8% BY WEIGHT OF A WATER REPELLENCY COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF A PARAFFIN WAX HAVING A MELTING POINT OF FROM 105* TO 155*F. AND A THERMOPLASTIC TERPENE RESIN HAVING A SOFTENING POINT BY THE BALLRING METHOD OF FROM 40* TO 140*C. AND PREPARED BY THE POLYMERIZATION OF TERPENSE OF THE GENERAL FORMULA C10H16, THE WEIGHT RATIO OF RESIN:WAX IN SAID COMPOSITION BEING IN THE RANGE OF FROM 1:4 TO 2:1.
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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) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |