Patent US2978415A successfully refreshed from Google Patents.
US2978415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guanidine soaps as dry cleaning detergents
Assignee: Wyeth Holdings LLC
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Filing: 1957-04-17
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Granted: 1961-04-04
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Expires: 1977-04-17
Abstract
No abstract record available.
Inventors
- 👤 Ralph J Chamberlain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:11
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A DRY CLEANING METHOD WHICH COMPRISES WASHING SOILED FABRICS IN A DRY CLEANING SOLVENT CONTAINING DETERGENT QUANTITIES OF THE GUANIDINE SOAP OF A FATTY ACID MIXTURE CONTAINING ABOUT 30-60% OF OLEIC ACID ABOUT 3060% OF LINOLEIC ACID AND NOT MORE THAN ABOUT 15% OF SATURATED FATTY ACIDS.
Claim 2
Dependent Claim
47 words
A DRY CLEANING METHOD WHICH COMPRISES WASHING SOILED FABRICS IN A DRY CLEANING SOLVENT CONTAINING DETERGENT QUANTITIES OF THE GUANIDINE SOAP OF A FATTY ACID MIXTURE CONTAINING ABOUT 30-60% OF OLEIC ACID ABOUT 3060% OF LINOLEIC ACID AND NOT MORE THAN ABOUT 15% OF SATURATED FATTY ACIDS.
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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |