Patent US650014A successfully refreshed from Google Patents.
Patent US2874148A successfully refreshed from Google Patents.
US2874148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinification of furfuryl alcohol and formaldehyde at high hydrogen-ion concentrations
Assignee: Quaker Oats Co
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Filing: 1954-07-29
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Granted: 1959-02-17
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Expires: 1974-07-29
Abstract
No abstract record available.
Inventors
- 👤 Lloyd H Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:06
CPC Classifications
C; C08; C08G; C08G16/00; C08G16/02; C08G16/025; C08G16/0256; C08G16/0262
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A CONTROLLABLE PROCESS FOR MAKING A POTENTIALLY CURABLE RESIN FROM FURFURYL ALCOHOL AND FORMALDEHYDE WHICH COMPRISES ACIDIFYING AN AQUEOUS SOLUTION OF FORMALDEHYDE TO A DEGREE OF ACIDITY GREATER THAN THAT CORRESPONDING TO PH 1.35, HEATING THE RESULTING MIXTURE UNDER REFLUX TO A TEMPERATURE JUST BELOW THE BOILING POINT OF WATER, AND THEN INTRODUCING FURFURYL ALCOHOL INTO SAID SOLUTION AT A RATE OF BETWEEN ABOUT .015 AND .071 GRAM OF FURFURYL ALCOHOL PER MINUTE PER GRAM OF FURFURYL ALCOHOL ADDED.
Claim 2
Dependent Claim
79 words
A CONTROLLABLE PROCESS FOR MAKING A POTENTIALLY CURABLE RESIN FROM FURFURYL ALCOHOL AND FORMALDEHYDE WHICH COMPRISES ACIDIFYING AN AQUEOUS SOLUTION OF FORMALDEHYDE TO A DEGREE OF ACIDITY GREATER THAN THAT CORRESPONDING TO PH 1.35, HEATING THE RESULTING MIXTURE UNDER REFLUX TO A TEMPERATURE JUST BELOW THE BOILING POINT OF WATER, AND THEN INTRODUCING FURFURYL ALCOHOL INTO SAID SOLUTION AT A RATE OF BETWEEN ABOUT .015 AND .071 GRAM OF FURFURYL ALCOHOL PER MINUTE PER GRAM OF FURFURYL ALCOHOL ADDED.
References Cited (Backward Citations)
US2343972A
Cited
US2416038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |