Patent US2629701A successfully refreshed from Google Patents.
US2629701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions containing esters of a glycol and polycarboxylic acids and the treatment of cellulose therewith
Assignee: Upson Co
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Filing: 1949-05-27
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Granted: 1953-02-24
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Expires: 1969-05-27
Abstract
No abstract record available.
Inventors
- 👤 Walter P Ericks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:34
CPC Classifications
C; C08; C08L; C08L67/00; C08L1/00; C08L1/02; C08L61/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A COMPOSITION FOR IMPREGNATING A FIBROUS MATERIAL CONSISTING PREDOMINANTLY OF CELLULOSE FIBERS, WHICH COMPOSITION COMPRISES, A SOLVENT SOLUTION CONTAINING BETWEEN APPROXIMATELY 5% AND 60% BY WEIGHT OF A MIXTURE OF A THERMOSETTING RESIN SOLUBLE IN SAID SOLVENT AND SUBSTANTIALLY MONOESTER OF A GLYCOL AND A DICARBOXYLIC ACID IN WHICH THE MOLECULES OF THE MONESTER HAVE THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
58 words
A COMPOSITION FOR IMPREGNATING A FIBROUS MATERIAL CONSISTING PREDOMINANTLY OF CELLULOSE FIBERS, WHICH COMPOSITION COMPRISES, A SOLVENT SOLUTION CONTAINING BETWEEN APPROXIMATELY 5% AND 60% BY WEIGHT OF A MIXTURE OF A THERMOSETTING RESIN SOLUBLE IN SAID SOLVENT AND SUBSTANTIALLY MONOESTER OF A GLYCOL AND A DICARBOXYLIC ACID IN WHICH THE MOLECULES OF THE MONESTER HAVE THE FOLLOWING FORMULA:
Claim 3
Dependent Claim
127 words
AS AN ARTICLE OF MANUFACTURE, A BOARD OF FIBROUS MATERIAL HAVING IMPROVED DIMENSIONAL STABILITY AND CONSISTING PREDOMINANTLY OF FELTED CELLULOSE PULP FIBERS IMPREGNATED AND REACTED SUBSTANTIALLY THROUGH SAID FIBROUS MATERIAL WITH A PARTIAL ESTER OF AN ALIPHATIC POLYHYDRIC ALCOHOL CONTAINING FROM TWO TO SIX HYDROXYL GROUPS EACH OF WHICH IS ATTACHED TO A DIFFERENT CARBON ATOM AND A POLYCARBOXYLIC ACID CONTAINING NOT MORE THAN 3 CARBOXYL GROUPS IN WHICH THE MOLECULES OF THE PARTIAL ESTER BEFORE REACTION WITH SAID CELLULOSE FIBERS ARE ESSENTIALLY IN MONOMERIC FORM AND HAVE IN EACH ALCOHOL RESIDUE A FREE HYDROXYL GROUP AND IN EACH ACID RESIDUE A FREE CARBOXYL GROUP, THE AMOUNT OF SAID PARTIAL ESTER IN SAID FIBROUS MATERIAL BEING BETWEEN APPROXIMATELY 2% AND 50% BY WEIGHT OF SAID FIBROUS MATERIAL.
Claim 4
Dependent Claim
127 words
AS AN ARTICLE OF MANUFACTURE, A BOARD OF FIBROUS MATERIAL HAVING IMPROVED DIMENSIONAL STABILITY AND CONSISTING PREDOMINANTLY OF FELTED CELLULOSE PULP FIBERS IMPREGNATED AND REACTED SUBSTANTIALLY THROUGH SAID FIBROUS MATERIAL WITH A PARTIAL ESTER OF AN ALIPHATIC POLYHYDRIC ALCOHOL CONTAINING FROM TWO TO SIX HYDROXYL GROUPS EACH OF WHICH IS ATTACHED TO A DIFFERENT CARBON ATOM AND A POLYCARBOXYLIC ACID CONTAINING NOT MORE THAN 3 CARBOXYL GROUPS IN WHICH THE MOLECULES OF THE PARTIAL ESTER BEFORE REACTION WITH SAID CELLULOSE FIBERS ARE ESSENTIALLY IN MONOMERIC FORM AND HAVE IN EACH ALCOHOL RESIDUE A FREE HYDROXYL GROUP AND IN EACH ACID RESIDUE A FREE CARBOXYL GROUP, THE AMOUNT OF SAID PARTIAL ESTER IN SAID FIBROUS MATERIAL BEING BETWEEN APPROXIMATELY 2% AND 50% BY WEIGHT OF SAID FIBROUS MATERIAL.
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) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |