US3074833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dimensional stabilization of cellulose articles
Assignee: Upson Co
•
Filing: 1959-11-12
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Granted: 1963-01-22
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Expires: 1979-11-12
Abstract
No abstract record available.
Inventors
- 👤 Walter P Ericks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:32
CPC Classifications
D; D06; D06M; D06M14/00; D06M14/02; D06M14/04; D06M15/00; D06M15/19; D06M15/37; D06M15/507; D06M15/51
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
THE PROCESS OF PREPARING A DIMENSIONALLY STABILIZED ARTICLE OF IMPROVED CHARACTERISTIC AND COMPOSED OF CELLULOSE FIBERS, COMPRISING IMPREGNATING A CELLULOSE FIBER SHEET WITH A SOLUTION, IN A INERT LOW-BOILING SOLVENT, OF A MONOMERIC ESTER OF A POLYCARBOXYLIC ACID AND A POLYHYDRIC ALCHOL, SAID ESTER CONTAINING ONLY ONE RESIDUE OF AT LEAST ONE CARBON TO CARBON DOUBLE BOND IN THE MOLECULE; LEAST ONE CARBON TO CARBON DOUBLE BOND IN THE MOLECULE; HEATING SAID IMPREGNATED SHEET TO EVAPORATE SAID SOLVENT; IMPREGNATING THE RESULTING DRIED SHEET WITH A COMPATIBLE POLYMERIZABLE LIQUID MONOMERIC COMPOUND CONTAINING AN ETHYLENIC LINKAGE; AND HEATING THE RESULTING IMPREGNATED SHEET TO COPOLYMERIZE SAID ESTER AND SAID MONOMERIC COMPOUND IN SITU TO PRODUCE A RESIN CONTAINING AS COPLYMER FROM 1 TO 50% OF SAID ESTER BASED ON THE COMBINED WEIGHT OF SAID ESTER AND SAID CELLULOSE FIBER SHEET AND FROM 1 TO 40% OF SAID MONOMERIC COMPOUND BASED ON THE WEIGHT OF THE FINAL PORDUCT.
Claim 2
Dependent Claim
154 words
THE PROCESS OF PREPARING A DIMENSIONALLY STABILIZED ARTICLE OF IMPROVED CHARACTERISTIC AND COMPOSED OF CELLULOSE FIBERS, COMPRISING IMPREGNATING A CELLULOSE FIBER SHEET WITH A SOLUTION, IN A INERT LOW-BOILING SOLVENT, OF A MONOMERIC ESTER OF A POLYCARBOXYLIC ACID AND A POLYHYDRIC ALCHOL, SAID ESTER CONTAINING ONLY ONE RESIDUE OF AT LEAST ONE CARBON TO CARBON DOUBLE BOND IN THE MOLECULE; LEAST ONE CARBON TO CARBON DOUBLE BOND IN THE MOLECULE; HEATING SAID IMPREGNATED SHEET TO EVAPORATE SAID SOLVENT; IMPREGNATING THE RESULTING DRIED SHEET WITH A COMPATIBLE POLYMERIZABLE LIQUID MONOMERIC COMPOUND CONTAINING AN ETHYLENIC LINKAGE; AND HEATING THE RESULTING IMPREGNATED SHEET TO COPOLYMERIZE SAID ESTER AND SAID MONOMERIC COMPOUND IN SITU TO PRODUCE A RESIN CONTAINING AS COPLYMER FROM 1 TO 50% OF SAID ESTER BASED ON THE COMBINED WEIGHT OF SAID ESTER AND SAID CELLULOSE FIBER SHEET AND FROM 1 TO 40% OF SAID MONOMERIC COMPOUND BASED ON THE WEIGHT OF THE FINAL PORDUCT.
References Cited (Backward Citations)
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US2941976A
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US2851379A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |