US2813846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardening condensation products of furfuryl alcohol
Assignee: Timber Engineering Co
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Filing: 1955-04-08
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Granted: 1957-11-19
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Expires: 1975-04-08
Abstract
No abstract record available.
Inventors
- 👤 Farber Eduard
- 👤 Sciascia Matthew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:30
CPC Classifications
C; C08; C08L; C08L71/00; C08L71/08; C08L71/14; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31957
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE PROCESS OF CONVERTING A LIQUID RESINOUS IMTERMEDIATE STAGE FURFURYL ALCOHOL CONDENSATION PRODUCT INTO A HARD RESIN WITHOUT EXTERNAL HEATING WHICH COMPRISES CONTACTING SAID CONDENSATION PRODUCT WITH A MIXTURE OF AN ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF THE SULFONIC ACIDS AND SULFANILIC ACIDS, SAID ACID BEING EM-EMPLOYED IN COMBINATION WITH A BUFFER SELECTED FROM THE GROUP CONSISTING OF BENZIDINE AND ALUMINUM ACETATE,, THERE BEING EMPLOYED AT LEAST ABOUT 5 PARTS BY WEIGHT OF SAID ORGANIC ACID FOR EACH 100 PARTS BY WEIGHT OF SAID CONDENSATION PRODUCT AND AT LEAST ABOUT 1 PART BY WEIGHT OF SAID BUFFER FOR EACH 100 PARTS BY WEIGHT OF SAID CONDENSATION PRODUCT.
Claim 2
Dependent Claim
109 words
THE PROCESS OF CONVERTING A LIQUID RESINOUS IMTERMEDIATE STAGE FURFURYL ALCOHOL CONDENSATION PRODUCT INTO A HARD RESIN WITHOUT EXTERNAL HEATING WHICH COMPRISES CONTACTING SAID CONDENSATION PRODUCT WITH A MIXTURE OF AN ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF THE SULFONIC ACIDS AND SULFANILIC ACIDS, SAID ACID BEING EM-EMPLOYED IN COMBINATION WITH A BUFFER SELECTED FROM THE GROUP CONSISTING OF BENZIDINE AND ALUMINUM ACETATE,, THERE BEING EMPLOYED AT LEAST ABOUT 5 PARTS BY WEIGHT OF SAID ORGANIC ACID FOR EACH 100 PARTS BY WEIGHT OF SAID CONDENSATION PRODUCT AND AT LEAST ABOUT 1 PART BY WEIGHT OF SAID BUFFER FOR EACH 100 PARTS BY WEIGHT OF SAID CONDENSATION PRODUCT.
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) | 1960-11-18 | 1961-05-20 | 1961-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-18 | 1965-05-20 | 1965-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-18 | 1969-05-20 | 1969-11-19 | $7700.00 | Window Closed / Lapsed |