US2802860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacture of phthalic esters of anosmic character
Assignee: Sherwin Williams Co
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Filing: 1954-08-06
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Granted: 1957-08-13
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Expires: 1974-08-06
Abstract
No abstract record available.
Inventors
- 👤 Stack Aaron
- 👤 Earl G Shaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:51
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/08; C07C67/48; C07C67/52; C07C67/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A METHOD FOR PRODUCING ODOR-FREE PLASTICIZING DIESTERS OF AN AROMATIC DICARBOXYLIC ACID AND A WATER INSOLUBLE ALIPHATIC MONOALCOHOL WHICH COMPRISES SUBJECTING THE ESTER TO SPARGING WITH AN INERT GAS AT A TEMPERATURE OF FROM 85*C. TO NOT MORE THAN 140*C. AT AN ABSOLUTE PRESSURE OF NOT MORE THAN ABOUT 150 MM. OF MERCURY IN THE PRESENCE OF A QUANTITY OF A SATURATED ALIPHATIC HYDROCARBON OF THE METHANE SERIES FROM PETROLEUM ETHER TO PETROLATUM SUFFICIENT TO RENDER THE SAID ESTER SUBSTANTIALLY ANOSMIC.
Claim 2
Independent Claim
81 words
A METHOD FOR PRODUCING ODOR-FREE PLASTICIZING DIESTERS OF AN AROMATIC DICARBOXYLIC ACID AND A WATER INSOLUBLE ALIPHATIC MONOALCOHOL WHICH COMPRISES SUBJECTING THE ESTER TO SPARGING WITH AN INERT GAS AT A TEMPERATURE OF FROM 85*C. TO NOT MORE THAN 140*C. AT AN ABSOLUTE PRESSURE OF NOT MORE THAN ABOUT 150 MM. OF MERCURY IN THE PRESENCE OF A QUANTITY OF A SATURATED ALIPHATIC HYDROCARBON OF THE METHANE SERIES FROM PETROLEUM ETHER TO PETROLATUM SUFFICIENT TO RENDER THE SAID ESTER SUBSTANTIALLY ANOSMIC.
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |