US2528136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface active compositions
Assignee: Sun Chemical Corp
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Filing: 1948-10-02
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Granted: 1950-10-31
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Expires: 1968-10-02
Abstract
No abstract record available.
Inventors
- 👤 Herman B Goldstein
- 👤 Armand S Waldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:33
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/74; Y; Y10; Y10S; Y10S516/00; Y10S516/905; Y10S516/917; Y10S516/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A SURFACE ACTIVE COMPOSITION COMPRISING, IN ADMIXTURE, AT LEAST 40 PER CENT BY WEIGHT OF AN ESTER OF A MONO-METHYLATED POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF APPROXIMATELY 350-750 AND A FATTY ACID MATERIAL, SAID FATTY ACID MATERIAL BEING COMPOSED ESSENTIALLY OF SATURATED HIGHER FATTY ACIDS, A MONOMETHYLATED POLYETHYLENE GLYCOL, HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF APPROXIMATELY 350-750, AND A FATTY ACID MATERIAL COMPOSED ESSENTIALLY OF SATURATED HIGHER FATTY ACIDS, THE SAID GLYCOL AND THE SAID FATTY ACID MATERIAL BEING PRESENT IN APPROXIMATELY EQUIVALENT MOLAR PROPORTIONS, SAID COMPOSITION HAVING AN ACID VALUE WITHIN THE RANGE OF 26-43.
Claim 2
Dependent Claim
102 words
A SURFACE ACTIVE COMPOSITION COMPRISING, IN ADMIXTURE, AT LEAST 40 PER CENT BY WEIGHT OF AN ESTER OF A MONO-METHYLATED POLYETHYLENE GLYCOL HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF APPROXIMATELY 350-750 AND A FATTY ACID MATERIAL, SAID FATTY ACID MATERIAL BEING COMPOSED ESSENTIALLY OF SATURATED HIGHER FATTY ACIDS, A MONOMETHYLATED POLYETHYLENE GLYCOL, HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF APPROXIMATELY 350-750, AND A FATTY ACID MATERIAL COMPOSED ESSENTIALLY OF SATURATED HIGHER FATTY ACIDS, THE SAID GLYCOL AND THE SAID FATTY ACID MATERIAL BEING PRESENT IN APPROXIMATELY EQUIVALENT MOLAR PROPORTIONS, SAID COMPOSITION HAVING AN ACID VALUE WITHIN THE RANGE OF 26-43.
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) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |