US2810659A
Expired / Lapsed
US
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Thermoplastic compositions of watersoluble cellulose ethers
Assignee: Dow Chemical Co
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Filing: 1953-11-25
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Granted: 1957-10-22
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Expires: 1973-11-25
Abstract
No abstract record available.
Inventors
- 👤 Jr George K Greminger
- 👤 Miles A Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/053; A; A61; A61K; A61K9/00; A61K9/48; A61K9/4816; C08K5/10; C08K5/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A THERMOPLASTIC COMPOSITION CONSISTING OF (A) FROM 34 TO 72 PERCENT OF A WATER-SOLUBLE CELLULOSE ETHER SELECTED FROM THE GROUP OF ALKYL CELLULOSE, HYDROXYALKYL CELLULOSE, AND ALKYL HYDROXYALKYL CELLULOSE IN WHICH THE ALKYL GROUP CONTAINS FROM 1 TO 3 CARBON ATOMS AND THE HYDROXYALKYL GROUP CONTAINS FROM 2 TO 3 CARBON ATOMS, (B) FROM 17 TO 51 PERCENT OF AN ALKYLENE GLYCOL, AND (C) FROM 8 TO 32 PERCENT OF A TRIALKYL ESTER OF AN ACID SELECTED FROM THE GROUP CONSISTING OF CITRIC ACID AND ACETYLCITRIC ACID IN WHICH THE ALKYL GROUP CONTAINS FROM 1 TO 6 CARBON ATOMS; THE PROPORTIONS OF EACH CONSTITUENT BEING CHOSEN SO AS TO BE REPRESENTED BY ANY POINT WITHIN THE SHADED AREA ON THE ANNEXED DRAWING.
Claim 2
Dependent Claim
122 words
A THERMOPLASTIC COMPOSITION CONSISTING OF (A) FROM 34 TO 72 PERCENT OF A WATER-SOLUBLE CELLULOSE ETHER SELECTED FROM THE GROUP OF ALKYL CELLULOSE, HYDROXYALKYL CELLULOSE, AND ALKYL HYDROXYALKYL CELLULOSE IN WHICH THE ALKYL GROUP CONTAINS FROM 1 TO 3 CARBON ATOMS AND THE HYDROXYALKYL GROUP CONTAINS FROM 2 TO 3 CARBON ATOMS, (B) FROM 17 TO 51 PERCENT OF AN ALKYLENE GLYCOL, AND (C) FROM 8 TO 32 PERCENT OF A TRIALKYL ESTER OF AN ACID SELECTED FROM THE GROUP CONSISTING OF CITRIC ACID AND ACETYLCITRIC ACID IN WHICH THE ALKYL GROUP CONTAINS FROM 1 TO 6 CARBON ATOMS; THE PROPORTIONS OF EACH CONSTITUENT BEING CHOSEN SO AS TO BE REPRESENTED BY ANY POINT WITHIN THE SHADED AREA ON THE ANNEXED DRAWING.
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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |