Patent US2557159A successfully refreshed from Google Patents.
US2557159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated unsaturated higher fatty acids and derivatives
Assignee: Individual
•
Filing: 1947-01-13
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Granted: 1951-06-19
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Expires: 1967-01-13
Abstract
No abstract record available.
Inventors
- 👤 Howard M Teeter
- 👤 John C Cowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:18
CPC Classifications
C; C11; C11C; C11C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS COMPRISING REACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN UNSATURATED HIGHER FATTY ACID AND THE LOWER ALKYL AND GLYCERIDE ESTERS THEREOF WITH A TERTIARY ALKYL HYPOHALITE UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS AT A TEMPERATURE OF ABOUT FROM 30* C. TO 100* C. THEREBY TO SUBSTITUTIONALLY HALOGENATE SAID MEMBER WITHOUT SUBSTANTIAL LOSS OF UNSATURATION THEREOF.
Claim 2
Dependent Claim
57 words
A PROCESS COMPRISING REACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN UNSATURATED HIGHER FATTY ACID AND THE LOWER ALKYL AND GLYCERIDE ESTERS THEREOF WITH A TERTIARY ALKYL HYPOHALITE UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS AT A TEMPERATURE OF ABOUT FROM 30* C. TO 100* C. THEREBY TO SUBSTITUTIONALLY HALOGENATE SAID MEMBER WITHOUT SUBSTANTIAL LOSS OF UNSATURATION THEREOF.
References Cited (Backward Citations)
GB402880A
Cited
US2396969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-18 | 1954-12-18 | 1955-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-18 | 1958-12-18 | 1959-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-18 | 1962-12-18 | 1963-06-19 | $7700.00 | Window Closed / Lapsed |