Patent US2562898A successfully refreshed from Google Patents.
US2562898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lignin resins and process of making same
Assignee: Masonite Corp
•
Filing: 1946-05-24
•
Granted: 1951-08-07
•
Expires: 1966-05-24
Abstract
No abstract record available.
Inventors
- 👤 Evans Raymond Norris
- 👤 Ingrassia Angelo Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:13
CPC Classifications
C; C08; C08H; C08H6/00; C08G; C08G16/00; C08G16/02; C08G16/0293
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
A THERMO-SETTING RESIN HAVING WATER AND ALKALI RESISTANT PROPERTIES, WHICH COMPRISES THE REACTION PRODUCT OF LIGNIN CHOSEN FROM THE GROUP CONSISTING OF ISOLATED ALKALI SOLUBLE LIGNIN AND LIGNIN CONTAINED IN HYDROLYZED LIGNO-CELLULOSE FIBER, AN ALCOHOL CHOSEN FROM THE GROUP CONSISTING OF FURFURYL ALCOHOL, ETHYLENE GLYCOL AND GLYCEROL, AN AMINOTRAZINE COMPOUND HAVING AT LEAST ONE HYDROGEN ATTACHED TO THE NON-RING AMINO NITROGEN, AND AN ALDEHYDE, SAID REACTIVE COMPONENTS BEING IN THE PROPORTION OF 1 TO 3 MOLES ALCOHOL TO 1 MOLE AMINOTRIAZINE TO 2 TO 3 MOLES ALDEHYDE AND THE AMOUNT OF LIGNIN BEING 25% TO 80% BASED ON THE WEIGHT OF THE AMINOTRIAZINE.
References Cited (Backward Citations)
GB282635A
Cited
US2068926A
Cited
US2197357A
Cited
US2156160A
Cited
US2197724A
Cited
US2338602A
Cited
US2320817A
Cited
US2368451A
Cited
US2345543A
Cited
US2407376A
Cited
US2404840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |