Patent US2676158A successfully refreshed from Google Patents.
US2676158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed esters of phenolic resins
Assignee: General Mills Inc
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Filing: 1952-02-21
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Granted: 1954-04-20
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Expires: 1972-02-21
Abstract
No abstract record available.
Inventors
- 👤 Malcolm M Renfrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:55
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G8/32; C08G8/04; C08G8/08; C08G8/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PHENOL-FORMALDEHYDE RESIN WITH 80% TO 100% OF THE HYDROXYL GROUPS ESTERIFIED BY MEANS OF A MIXTURE OF UNSATURATED HIGHER FATTY ACIDS CONTAINING FROM 8-18 CARBON ATOMS AND A BENZOIC ACID SELECTED FROM THE GROUP CONSISTING OF BENZOIC ACID AND HYDROCARBON SUBSTITUTED BENZOIC ACIDS, FROM 5% TO 20% OF THE TOTAL ESTERIFIED HYDROXYL GROUPS BEING ESTERIFIED WITH A BENZOIC ACID.
Claim 2
Dependent Claim
60 words
A PHENOL-FORMALDEHYDE RESIN WITH 80% TO 100% OF THE HYDROXYL GROUPS ESTERIFIED BY MEANS OF A MIXTURE OF UNSATURATED HIGHER FATTY ACIDS CONTAINING FROM 8-18 CARBON ATOMS AND A BENZOIC ACID SELECTED FROM THE GROUP CONSISTING OF BENZOIC ACID AND HYDROCARBON SUBSTITUTED BENZOIC ACIDS, FROM 5% TO 20% OF THE TOTAL ESTERIFIED HYDROXYL GROUPS BEING ESTERIFIED WITH A BENZOIC ACID.
References Cited (Backward Citations)
US1998098A
Cited
US2044859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |