US2610180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethyl oxyethyl cellulose derivatives and method of preparation of the same
Assignee: Hercules Powder Co
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Filing: 1951-03-31
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Granted: 1952-09-09
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Expires: 1971-03-31
Abstract
No abstract record available.
Inventors
- 👤 Eugene D Klug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:37
CPC Classifications
C; C08; C08B; C08B11/00; C08B11/193
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
AS A NEW COMPOSITION OF MATTER A MODIFIED ETHYL OXYETHYL CELLULOSE HAVING AN OXYETHYL DEGREE OF SUBSTITUTION WITHIN THE RANGE OF 0.3 TO 0.9 AND A TOTAL ETHOXYL CONTENT CORRESPONDING TO A DEGREE OF SUBSTITUTION WITHIN THE RANGE OF 2.6 TO 2.9 AND CHARACTERIZED BY SOLUBILITY IN ORGANIC SOLVENTS AND TOLERANCE FOR ALIPHATIC HYDROCARBONS SUBSTANTIALLY GREATER THAN ETHYL CELLULOSE OF THE SAME ETHOXYL CONTENT.
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) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |