US2987490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface-active esters of polymerized polyethenoid fatty acids
Assignee: Visco Products Co
•
Filing: 1956-09-17
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Granted: 1961-06-06
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Expires: 1976-09-17
Abstract
No abstract record available.
Inventors
- 👤 Willard H Kirkpatrick
- 👤 Virgil L Seale
- 👤 Walker Alice
- 👤 Joe B Love
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:06
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/62; C08F20/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN ESTER HAVING A MOLECULAR WEIGHT OF AT LEAST 1500, SAID ESTER FORMED BY THE ESTERIFICATION OF (A) A POLYMERIZED POLYETHENOID FATTY ACID MIXTURE CONSISTING OF AT LEAST 70% TRIMERIZED FATTY ACID, THE TRIMERIZED ACID HAVING A MOLECULAR WEIGHT OF AT LEAST 834 AND BEING A TRICARBOXY ACID, WITH THE REMAINDER OF SAID MIXTURE BEING A DICARBOXY DIMER OF THE POLYETHENOID FATTY ACID IN SAID TRIMERIZED FATTY ACID, AND (B) A POLYOXYALKYLENE ORGANIC COMPOUND HAVING AN ESTERIFIABLE HYDROXY GROUP IN THE POLYOXYALKYLENE CHAIN, SAID POLYOXYALKYLENE COMPOUND HAVING A MOLECULAR WEIGHT OF AT LEAST 400 AND THE ALKYLENE GROUPS IN THE POLYOXYALKYLENE PORTION OF THE POLYOXYALKYLENE COMPOUND HAVING 2-3 CARBONS.
Claim 2
Dependent Claim
109 words
AN ESTER HAVING A MOLECULAR WEIGHT OF AT LEAST 1500, SAID ESTER FORMED BY THE ESTERIFICATION OF (A) A POLYMERIZED POLYETHENOID FATTY ACID MIXTURE CONSISTING OF AT LEAST 70% TRIMERIZED FATTY ACID, THE TRIMERIZED ACID HAVING A MOLECULAR WEIGHT OF AT LEAST 834 AND BEING A TRICARBOXY ACID, WITH THE REMAINDER OF SAID MIXTURE BEING A DICARBOXY DIMER OF THE POLYETHENOID FATTY ACID IN SAID TRIMERIZED FATTY ACID, AND (B) A POLYOXYALKYLENE ORGANIC COMPOUND HAVING AN ESTERIFIABLE HYDROXY GROUP IN THE POLYOXYALKYLENE CHAIN, SAID POLYOXYALKYLENE COMPOUND HAVING A MOLECULAR WEIGHT OF AT LEAST 400 AND THE ALKYLENE GROUPS IN THE POLYOXYALKYLENE PORTION OF THE POLYOXYALKYLENE COMPOUND HAVING 2-3 CARBONS.
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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |