Patent US3128294A successfully refreshed from Google Patents.
US3128294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salts of alpha-sulfonated fatty acid esters
Assignee: Individual
•
Filing: 1962-06-21
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Granted: 1964-04-07
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Expires: 1982-06-21
Abstract
No abstract record available.
Inventors
- 👤 Alexander J Stirton
- 👤 Jr Raymond G Bistline
- 👤 James K Weil
- 👤 Waldo C Ault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:16
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/17; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A COMPOSITION OF THE FORMULA RCH(SO3M)COOR'' WHERE R IS AN N-ALKYL GROUP CONTAINING FROM 2 TO 12 CARBON ATOMS, INCLUSIVE, M IS SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM AND AMMONIUM, R'' IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF DODECFLUOROHEPTYL AND A STRAIGHT AND BRANCHED CHAIN ALKYL RADICAL CONTAINING FROM 2 TO 12 CARBON ATOMS, INCLUSIVE, AND THE SUM OF THE CARBON ATOMS IN R PLUS R'' PLUS 2 IS AN INTEGER FROM 14 TO 19, INCLUSIVE.
Claim 2
Dependent Claim
80 words
A COMPOSITION OF THE FORMULA RCH(SO3M)COOR'' WHERE R IS AN N-ALKYL GROUP CONTAINING FROM 2 TO 12 CARBON ATOMS, INCLUSIVE, M IS SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM AND AMMONIUM, R'' IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF DODECFLUOROHEPTYL AND A STRAIGHT AND BRANCHED CHAIN ALKYL RADICAL CONTAINING FROM 2 TO 12 CARBON ATOMS, INCLUSIVE, AND THE SUM OF THE CARBON ATOMS IN R PLUS R'' PLUS 2 IS AN INTEGER FROM 14 TO 19, INCLUSIVE.
References Cited (Backward Citations)
US2043476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |