US2990377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organosiloxane esters as emulsifying agents
Assignee: Dow Silicones Corp
•
Filing: 1955-08-01
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Granted: 1961-06-27
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Expires: 1975-08-01
Abstract
No abstract record available.
Inventors
- 👤 William C May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:08
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C09; C09K; C09K23/00; C09K23/54; C08G; C08G77/00; C08G77/04; C08G77/22; C08G77/24; C08G77/42; C08G77/46; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
AN OIL-IN-WATER TYPE EMULSION COMPRISING (A) AN ORGAINC SOLVENT WHICH IS IMMISCIBLE WITH, (B) A CHEMIACAL COMPOSITON SOLUBLE IN (A) ANS INSOLUBLE IN WATER, (C) AS THE EMULSIGYING AGEN A DIMETHYLSILICON ESTER OF A POLYALKYLENE GLYCOL WHEREIN THE ALKYLENE CHAIN OBTAINS NO MORE THAN SIX CARBON ATOMS, WHICH ESTER CONSISTS ESSENTIALLY OF 5 TO 95 MOL PERCENT -(CH3)2SIO- UNITS AND 95 TO 5 MOL PERCENT POLYALKYLENE GLYCOL RESIDUE UNITS AND (D) WATER.
Claim 2
Dependent Claim
72 words
AN OIL-IN-WATER TYPE EMULSION COMPRISING (A) AN ORGAINC SOLVENT WHICH IS IMMISCIBLE WITH, (B) A CHEMIACAL COMPOSITON SOLUBLE IN (A) ANS INSOLUBLE IN WATER, (C) AS THE EMULSIGYING AGEN A DIMETHYLSILICON ESTER OF A POLYALKYLENE GLYCOL WHEREIN THE ALKYLENE CHAIN OBTAINS NO MORE THAN SIX CARBON ATOMS, WHICH ESTER CONSISTS ESSENTIALLY OF 5 TO 95 MOL PERCENT -(CH3)2SIO- UNITS AND 95 TO 5 MOL PERCENT POLYALKYLENE GLYCOL RESIDUE UNITS AND (D) WATER.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |