US2832674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction tank
Assignee: EF Drew and Co Inc
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Filing: 1954-08-23
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Granted: 1958-04-29
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Expires: 1974-08-23
Abstract
No abstract record available.
Inventors
- 👤 Ranzenberger Walther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:12
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/24; B01J19/2415; B01J19/243; B01J14/00; B01J19/18; C; C07; C07C; C07C67/00; C07C67/08; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
APPARATUS FOR CONDUCTING REACTIONS BETWEEN LIQUID ORGANIC ACIDS AND ALCOHOLS WHICH COMPRISES A CLOSED REACTION VESSEL, SEPARATE ADJACENT INLETS FOR INTRODUCTION OF SAID ACIDS AND ALCOHOLS CENTRALLY OF THE TOP OF SAID VESSEL, THE BOTTOM OF SAID VESSEL BEING CLOSED, MEANS FOR HEATING SAID VESSEL, A PLURALITY OF CONCENTRIC COMPARTMENTS IN SAID VESSEL EXTENDING FROM THE BOTTOM THEREOF TO A POINT BELOW THE TOP AND PROVIDING A VAPOR SPACE, AN EXIT IN SAID TOP FOR VAPORS, SAID COMPARTMENTS HAVING MEANS FOR COMMUNICATION THEREBETWEEN, MEANS FOR CAUSING FLOW OF SAID SUBSTANCES SPIRALLY FROM THE CENTRAL COMPARTMENT TO THE
Claim 2
Dependent Claim
97 words
APPARATUS FOR CONDUCTING REACTIONS BETWEEN LIQUID ORGANIC ACIDS AND ALCOHOLS WHICH COMPRISES A CLOSED REACTION VESSEL, SEPARATE ADJACENT INLETS FOR INTRODUCTION OF SAID ACIDS AND ALCOHOLS CENTRALLY OF THE TOP OF SAID VESSEL, THE BOTTOM OF SAID VESSEL BEING CLOSED, MEANS FOR HEATING SAID VESSEL, A PLURALITY OF CONCENTRIC COMPARTMENTS IN SAID VESSEL EXTENDING FROM THE BOTTOM THEREOF TO A POINT BELOW THE TOP AND PROVIDING A VAPOR SPACE, AN EXIT IN SAID TOP FOR VAPORS, SAID COMPARTMENTS HAVING MEANS FOR COMMUNICATION THEREBETWEEN, MEANS FOR CAUSING FLOW OF SAID SUBSTANCES SPIRALLY FROM THE CENTRAL COMPARTMENT TO THE
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) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |