US2834777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of treating cellulose ethers
Assignee: Mo och Domsjo AB
•
Filing: 1957-04-30
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Granted: 1958-05-13
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Expires: 1977-04-30
Abstract
No abstract record available.
Inventors
- 👤 Jullander Elof Ingvar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:10
CPC Classifications
C; C08; C08B; C08B11/00; C08B11/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A METHOD OF TREATING A WATER-SOLUBLE CELLULOSE ETHER, WHICH COMPRISES REACTING SAID CELLULOSE ETHER WITH AN ALKALI METAL BOROHYDRIDE.
Claim 2
Independent Claim
19 words
A METHOD OF TREATING A WATER-SOLUBLE CELLULOSE ETHER, WHICH COMPRISES REACTING SAID CELLULOSE ETHER WITH AN ALKALI METAL BOROHYDRIDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |