US2689784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing cellulose xanthate
Assignee: Akzo Nobel UK PLC
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Filing: 1948-05-11
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Granted: 1954-09-21
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Expires: 1968-05-11
Abstract
No abstract record available.
Inventors
- 👤 Maurice P Kulp
- 👤 Charles D Vandenburgh
- 👤 Dorothy C Chance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:22
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
AN APPARATUS FOR PRODUCING CELLULOSE XANTHATE COMPRISING THREE CHAMBERS ARRANGED IN SUPERIMPOSED RELATION WITH THE DISCHARGE OPENING OF THE UPPERMOST CHAMBER ALIGNED WITH THE INLET OPENING OF THE INTERMEDIATE CHAMBER AND THE DISCHARGE OPENING OF THE INTERMEDIATE CHAMBER ALIGNED WITH THE INLET OPENING OF THE LOWERMOST CHAMBER, MEANS IN THE UPPERMOST CHAMBER FOR DIVIDING THE SAME INTO COMPARTMENTS COMPRISING PLATE-LIKE MEMBERS SUPPORTED FOR PIVOTAL MOVEMENT ONE ABOVE THE OTHER IN SPACED RELATION, MEANS FOR PIVOTING THE PLATE-LKE MEMBERS THROUGH AN ARC OF 90* INTERMITTENTLY AND SEQUENTIALLY, AN AGITATING MEANS IN THE INTERMEDIATE CHAMBER, LIQUID SPRAYING MEANS PROJECTING INTO THE INTERMEDIATE CHAMBER, SOLENOID ACTUATED VALVE MEANS CONNECTED TO THE LIQUID SPRAYING MEANS FOR AUTOMATICALLY CONTROLLING THE AMOUNT OF LIQUID DELIVERD TO THE LIQUID SPRAYING MEANS, AN ARCUATE PLATE-LIKE SEALING MEANS POSITIONED ADJACENT THE DISCHARGE OPENING OF THE UPPERMOST CHAMBER, AN
Claim 2
Independent Claim
139 words
AN APPARATUS FOR PRODUCING CELLULOSE XANTHATE COMPRISING THREE CHAMBERS ARRANGED IN SUPERIMPOSED RELATION WITH THE DISCHARGE OPENING OF THE UPPERMOST CHAMBER ALIGNED WITH THE INLET OPENING OF THE INTERMEDIATE CHAMBER AND THE DISCHARGE OPENING OF THE INTERMEDIATE CHAMBER ALIGNED WITH THE INLET OPENING OF THE LOWERMOST CHAMBER, MEANS IN THE UPPERMOST CHAMBER FOR DIVIDING THE SAME INTO COMPARTMENTS COMPRISING PLATE-LIKE MEMBERS SUPPORTED FOR PIVOTAL MOVEMENT ONE ABOVE THE OTHER IN SPACED RELATION, MEANS FOR PIVOTING THE PLATE-LKE MEMBERS THROUGH AN ARC OF 90* INTERMITTENTLY AND SEQUENTIALLY, AN AGITATING MEANS IN THE INTERMEDIATE CHAMBER, LIQUID SPRAYING MEANS PROJECTING INTO THE INTERMEDIATE CHAMBER, SOLENOID ACTUATED VALVE MEANS CONNECTED TO THE LIQUID SPRAYING MEANS FOR AUTOMATICALLY CONTROLLING THE AMOUNT OF LIQUID DELIVERD TO THE LIQUID SPRAYING MEANS, AN ARCUATE PLATE-LIKE SEALING MEANS POSITIONED ADJACENT THE DISCHARGE OPENING OF THE UPPERMOST CHAMBER, AN
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) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |