US2635103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent and method of making the same
Assignee: EF Drew and Co Inc
•
Filing: 1950-03-09
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Granted: 1953-04-14
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Expires: 1970-03-09
Abstract
No abstract record available.
Inventors
- 👤 Henry A Molteni
- 👤 Nathaniel H Masarky
- 👤 Barsky George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:26
CPC Classifications
C; C11; C11C; C11C3/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
86 words
A METHOD OF MAKING DETERGENTS WHICH COMPRISES MIXING 1 MOL. OF A WATER-SOLUBLE HYDROXYETHYLSULPHURIC ACID SALT WITH AN AMOUNT OF A HIGHER FATTY ACID LESS THAN 1 AND MORE THAN 0.6 MOL., MAINTAINING AN INERT ATMOSPHERE, HEATING SAID MIXTURE TO A TEMPERATURE OF 200*-300* C. FOR A SUFFICIENT LENGTH OF TIME TO CAUSE A SUBSTANTIAL REACTION TO OCCUR BETWEEN SAID SUBSTANCES, THE PRESSURE BEING BELOW ATMOSPHERIC BUT ABOVE 250 MM., THEREAFTER DECREASING THE PRESSURE TO BELOW 100 MM., CONTINUING THE HEATING TO REMOVE FREE FATTY ACID.
Claim 2
Independent Claim
86 words
A METHOD OF MAKING DETERGENTS WHICH COMPRISES MIXING 1 MOL. OF A WATER-SOLUBLE HYDROXYETHYLSULPHURIC ACID SALT WITH AN AMOUNT OF A HIGHER FATTY ACID LESS THAN 1 AND MORE THAN 0.6 MOL., MAINTAINING AN INERT ATMOSPHERE, HEATING SAID MIXTURE TO A TEMPERATURE OF 200*-300* C. FOR A SUFFICIENT LENGTH OF TIME TO CAUSE A SUBSTANTIAL REACTION TO OCCUR BETWEEN SAID SUBSTANCES, THE PRESSURE BEING BELOW ATMOSPHERIC BUT ABOVE 250 MM., THEREAFTER DECREASING THE PRESSURE TO BELOW 100 MM., CONTINUING THE HEATING TO REMOVE FREE FATTY ACID.
Claim 3
Dependent Claim
53 words
THE REACTION PRODUCT OF 1 MOL. OF A WATERSOLUBLE HYDROXYETHYLSULPHURIC ACID SALT WITH ABOUT 0.6 TO 0.95 MOL. OF A HIGHER FATTY ACID, PRODUCED BY HEATING SAID REACTANTS AT 200*-300* C. AT PRESSURES BELOW ATMOSPHERIC AND ABOVE 250 MM., IN AN INERT ATMOSPHERE, AND THEREAFTER CONTINUING SAID HEATING AT PRESSURES BELOW 100 MM.,
Claim 4
Dependent Claim
53 words
THE REACTION PRODUCT OF 1 MOL. OF A WATERSOLUBLE HYDROXYETHYLSULPHURIC ACID SALT WITH ABOUT 0.6 TO 0.95 MOL. OF A HIGHER FATTY ACID, PRODUCED BY HEATING SAID REACTANTS AT 200*-300* C. AT PRESSURES BELOW ATMOSPHERIC AND ABOVE 250 MM., IN AN INERT ATMOSPHERE, AND THEREAFTER CONTINUING SAID HEATING AT PRESSURES BELOW 100 MM.,
References Cited (Backward Citations)
US2175285A
Cited
US2204433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |