Patent US2840485A successfully refreshed from Google Patents.
US2840485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic compositions of watersoluble cellulose ethers
Assignee: Dow Chemical Co
•
Filing: 1953-11-25
•
Granted: 1958-06-24
•
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
2026-10-25 06:57
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A THERMOPLASTIC COMPOSITION CONSISTING ESSENTIALLY OF FROM 5 TO 80 PERCENT OF A WATER-SOLUBLE CELLULOSE ETHER SELECTED FROM THE GROUP OF ALYL 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, AND CORRESPONDINGLY FROM 95 TO 20 PERCENT OF AN ALKYL GLYCOLATE IN WHICH THE ALKYL GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS.
Claim 2
Dependent Claim
75 words
A THERMOPLASTIC COMPOSITION CONSISTING ESSENTIALLY OF FROM 5 TO 80 PERCENT OF A WATER-SOLUBLE CELLULOSE ETHER SELECTED FROM THE GROUP OF ALYL 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, AND CORRESPONDINGLY FROM 95 TO 20 PERCENT OF AN ALKYL GLYCOLATE IN WHICH THE ALKYL GROUP CONTAINS FROM 1 TO 4 CARBON ATOMS.
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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |