Patent US3074833A successfully refreshed from Google Patents.
US3074833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dimensional stabilization of cellulose articles
Assignee: Upson Co
•
Filing: 1959-11-12
•
Granted: 1963-01-22
•
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 12:50
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)
US2115708A
Cited
US2629701A
Cited
US2941976A
Cited
US2851379A
Cited
US2879249A
Cited
US2912413A
Cited
US2890144A
Cited
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 |