Patent US2953526A successfully refreshed from Google Patents.
US2953526A
Expired / Lapsed
US
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Ampholytic compositions in wet treatments
Assignee: GAF Chemicals Corp
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Filing: 1955-12-20
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Granted: 1960-09-20
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Expires: 1975-12-20
Abstract
No abstract record available.
Inventors
- 👤 Carl A Bergman
- 👤 Emil C Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:20
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/53; D06M13/00; D06M13/322; D06M13/325; D06M13/342
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A SOFTENING COMPOSITION FOR USE IN THE WET TREATMENT OF FIBROUS MATERIALS COMPRISING AN AMPHOLYTIC COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
19 words
A SOFTENING COMPOSITION FOR USE IN THE WET TREATMENT OF FIBROUS MATERIALS COMPRISING AN AMPHOLYTIC COMPOUND HAVING THE FORMULA
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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |