Patent US3630935A successfully refreshed from Google Patents.
US3630935A
Expired / Lapsed
US
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Dry cleaning composition
Assignee: Procter and Gamble Co
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Filing: 1969-12-16
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Granted: 1971-12-28
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Expires: 1989-12-16
Abstract
Abstract A DRY CLEANING COMPOSITION, HAVING A PH IN THE RANGE OF FROM ABOUT 6.5 TO ABOUT 9, CONSISTING ESSENTIALLY OF FROM ABOUT 20% TO ABOUT 99.94% BY WEIGHT OF A DRY CLEANING SOLVENT AND FROM ABOUT 0.06% TO ABOUT 80% OF AN ANIONIC DETERGENT COMPRISING THE MONOETHANOLAMINE SALT OF AN ESSENTIALLY PURE, BROAD CUT, LINEAR C8 TO C18 BENZENE SULFONIC ACID; THE COMPOSITION, WHEN EMPLOYED IN CONVENTIONAL DRY CLEANING OPERATIONS, IMPROVES FABRIC CLEANING AND REDUCES FABRIC GRAYING.
Inventors
- 👤 Gordon W Potter Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:52
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |