US3157681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric fat acids
Assignee: General Mills Inc
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Filing: 1962-06-28
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Granted: 1964-11-17
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Expires: 1982-06-28
Abstract
No abstract record available.
Inventors
- 👤 Eugene M Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 21:35
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/62; C08F20/64; B; B01; B01J; B01J21/00; B01J21/16; C07; C07C; C07C51/00; C07C51/347; C07C51/353
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS OF POLYMERIZING HIGHER UNSATURATED FATTY ACIDS COMPRISING HEATING SAID ACIDS IN THE PRESENCE OF AN ACID CLAY SELECTED FROM THE GROUP CONSISTING OF CLAYS A AND B HAVING A PH OF AOBUT 5.7 AND A KARL FISCHER MOISTURE CONTENT OF ABOUT 10 TO 17% AND SUBSTANTIALLY THE ANALYSIS:
Claim 2
Dependent Claim
50 words
A PROCESS OF POLYMERIZING HIGHER UNSATURATED FATTY ACIDS COMPRISING HEATING SAID ACIDS IN THE PRESENCE OF AN ACID CLAY SELECTED FROM THE GROUP CONSISTING OF CLAYS A AND B HAVING A PH OF AOBUT 5.7 AND A KARL FISCHER MOISTURE CONTENT OF ABOUT 10 TO 17% AND SUBSTANTIALLY THE ANALYSIS:
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |