US2590655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified tall oil esters and process of preparing the same
Assignee: Wyeth Holdings LLC
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Filing: 1950-08-15
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Granted: 1952-03-25
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Expires: 1970-08-15
Abstract
No abstract record available.
Inventors
- 👤 Alfred F Schmutzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:25
CPC Classifications
C; C09; C09F; C09F1/00; C09F1/04; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C09D; C09D11/00; C09D11/02; C09D11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A PROCESS FOR PREPARING AN ACRYLONITRILE MODIFIED TALLOIL ESTER WHICH COMPRISES ESTERIFYING TALLOIL WITH A SATURATED ALIPHATIC POLYHYDRIC ALCOHOL IN THE ABSENCE OF AN APPRECIABLE AMOUNT OF ANY POLYCARBOXYLIC ACID AND HEAT-REACTING THE RESULTING PRODUCT WITH 4%-28% OF MONOMERIC ACRYLONITRILE.
Claim 2
Dependent Claim
40 words
A PROCESS FOR PREPARING AN ACRYLONITRILE MODIFIED TALLOIL ESTER WHICH COMPRISES ESTERIFYING TALLOIL WITH A SATURATED ALIPHATIC POLYHYDRIC ALCOHOL IN THE ABSENCE OF AN APPRECIABLE AMOUNT OF ANY POLYCARBOXYLIC ACID AND HEAT-REACTING THE RESULTING PRODUCT WITH 4%-28% OF MONOMERIC ACRYLONITRILE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |