Patent US2923604A successfully refreshed from Google Patents.
US2923604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xanthate dissolver
Assignee: Akzo Nobel UK PLC
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Filing: 1957-02-18
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Granted: 1960-02-02
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Expires: 1977-02-18
Abstract
No abstract record available.
Inventors
- 👤 Fawley Harry
- 👤 Golben Michael
- 👤 David J Dube
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:29
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/80; B01F33/83; B01F33/833; B01F21/00; B01F21/10; B01F29/00; B01F29/80; B01F29/85; B01F35/00; B01F35/71; B01F35/711; B01F35/714; B01F35/717; B01F35/7173; B01F35/71731; B01F35/7177; B01F35/71805
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
AN APPARATUS FOR DISSOLVING CELLULOSE XANTHATE CRUMBS IN AN ALKALINE SOLUTION COMPRISING A CVLOSED VESSEL, MEANS FOR ADMITTING CELLULOSE XANTHATE CRUMBS AND AN ALKALINE SOLUTION INTO SAID VESSEL, AN OPEN-ENDED, PERFORATED, HOLLOW CYLINDRICAL MEMBER ROTATABLY MOUNTED WITHIN SAID VESSEL, MEANS FOR ROTATING SAID MEMBER ABOUT THE LONGITUDINAL AXIS THEREOF, A ROLLER MOUNTED WITHIN SAID VESSEL ON AN AXIS PARALLEL TO THE AXIS OF SAID CYLINDRICAL MEMBER, THE SURFACE OF SAID ROLLER BEING IN CONTACT WITH A SURFACE OF SAID CYLINDRICAL MEMBER, MEANS FOR ROTATING SAID ROLLER IN THE DIRECTION OPPOSITE TO THE ROTATION OF SAID CYLINDRICAL MEMBER WHEREBY THE CELLULOSE XANTHATE CRUMBS WILL BE CAUGHT BETWEEN THE ROLLER AND THE CYLINDRI-
Claim 2
Independent Claim
111 words
AN APPARATUS FOR DISSOLVING CELLULOSE XANTHATE CRUMBS IN AN ALKALINE SOLUTION COMPRISING A CVLOSED VESSEL, MEANS FOR ADMITTING CELLULOSE XANTHATE CRUMBS AND AN ALKALINE SOLUTION INTO SAID VESSEL, AN OPEN-ENDED, PERFORATED, HOLLOW CYLINDRICAL MEMBER ROTATABLY MOUNTED WITHIN SAID VESSEL, MEANS FOR ROTATING SAID MEMBER ABOUT THE LONGITUDINAL AXIS THEREOF, A ROLLER MOUNTED WITHIN SAID VESSEL ON AN AXIS PARALLEL TO THE AXIS OF SAID CYLINDRICAL MEMBER, THE SURFACE OF SAID ROLLER BEING IN CONTACT WITH A SURFACE OF SAID CYLINDRICAL MEMBER, MEANS FOR ROTATING SAID ROLLER IN THE DIRECTION OPPOSITE TO THE ROTATION OF SAID CYLINDRICAL MEMBER WHEREBY THE CELLULOSE XANTHATE CRUMBS WILL BE CAUGHT BETWEEN THE ROLLER AND THE CYLINDRI-
References Cited (Backward Citations)
US2614102A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |