Patent US2548019A successfully refreshed from Google Patents.
US2548019A
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Sulfonic acid surface active agent and method of preparation
Assignee: EF Houghton and Co
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Filing: 1948-10-12
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Granted: 1951-04-10
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Expires: 1968-10-12
Abstract
No abstract record available.
Inventors
- 👤 Glen W Hedrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:56
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/17; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
AS A SURFACE ACTIVE AGENT POSSESSING MARKED DETERGENT PROPERTIES, THE WATER-SOLUBLE SALTS OF THE BENZOYL SULPHO PROPIONIC ACID ESTERS CORRESPONDING TO THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
24 words
AS A SURFACE ACTIVE AGENT POSSESSING MARKED DETERGENT PROPERTIES, THE WATER-SOLUBLE SALTS OF THE BENZOYL SULPHO PROPIONIC ACID ESTERS CORRESPONDING TO THE FOLLOWING FORMULA:
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) | 1954-04-09 | 1954-10-09 | 1955-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-09 | 1958-10-09 | 1959-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-09 | 1962-10-09 | 1963-04-10 | $7700.00 | Window Closed / Lapsed |