US3154577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operation of chemical reactions in the liquid phase
Assignee: Hercules Powder Co
•
Filing: 1958-05-29
•
Granted: 1964-10-27
•
Expires: 1978-05-29
Abstract
No abstract record available.
Inventors
- 👤 Richard P Carter
- 👤 Franklyn T Parkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:57
CPC Classifications
C; C12; C12M; C12M41/00; C12M41/02; B; B01; B01J; B01J19/00; B01J19/0006; B01J19/002; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/255; C07C51/265; B01J2219/00; B01J2219/00049; B01J2219/00245; B01J2219/0025; C12C; C12C11/00; C12C11/07; Y; Y10; Y10S; Y10S159/00; Y10S159/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A METHOD FOR OPERATING A LIQUID PHASE CHEMICAL REACTION WITHIN A REACTOR, WHICH READTION IS CHARACTERIZED BY THE ESSENTIALLY CONTINOUS INTRODUCTION OF AT LEAST ONE LIQUID REACTANT INTO THE REACTOR AND THE ESSENTIALLY CONTINUOUS WITHDRAWAL OF LIQUID PRODUCT, AND BY THE FORMATION OF FOAM IN VARYING VOLUME WITHIN THE REACTOR, WHICH METHOD COMPRISES: (A) POSITIONING INTERNALLY NEAR THE TOP OF THE REACTOR A DEVICE SENSITIVEW TO A CHANGE IN FOAM LEVEL; (B) DETERMINING THE RISE AND FALL OF FOAM LEVEL WITH SAID DEVICES; AND (C) BY MEANS OF A CONTROL SYSTEM ASSCIATED WITH SAID FOAM LEVEL DEVICE, DECREASING THE LIQUID LEVEL IN RESPONSE TO A RISE IN FOAM LEVEL AND INCREASING THE LIQUID LEVEL IN RESPONSE TO A DECREASE IN FOAM LEVEL, THEREBY MAINTAINING THE FOAM LEVEL APPROXIMATELY CONSTANT, THE CHANGE IN LIQUID LEVEL IN THE REACTOR BEING BASED ON CONTROL OF THE RATE OF PRODUCT WITHDRAWAL.
Claim 2
Independent Claim
147 words
A METHOD FOR OPERATING A LIQUID PHASE CHEMICAL REACTION WITHIN A REACTOR, WHICH READTION IS CHARACTERIZED BY THE ESSENTIALLY CONTINOUS INTRODUCTION OF AT LEAST ONE LIQUID REACTANT INTO THE REACTOR AND THE ESSENTIALLY CONTINUOUS WITHDRAWAL OF LIQUID PRODUCT, AND BY THE FORMATION OF FOAM IN VARYING VOLUME WITHIN THE REACTOR, WHICH METHOD COMPRISES: (A) POSITIONING INTERNALLY NEAR THE TOP OF THE REACTOR A DEVICE SENSITIVEW TO A CHANGE IN FOAM LEVEL; (B) DETERMINING THE RISE AND FALL OF FOAM LEVEL WITH SAID DEVICES; AND (C) BY MEANS OF A CONTROL SYSTEM ASSCIATED WITH SAID FOAM LEVEL DEVICE, DECREASING THE LIQUID LEVEL IN RESPONSE TO A RISE IN FOAM LEVEL AND INCREASING THE LIQUID LEVEL IN RESPONSE TO A DECREASE IN FOAM LEVEL, THEREBY MAINTAINING THE FOAM LEVEL APPROXIMATELY CONSTANT, THE CHANGE IN LIQUID LEVEL IN THE REACTOR BEING BASED ON CONTROL OF THE RATE OF PRODUCT WITHDRAWAL.
References Cited (Backward Citations)
US511540A
Cited
US1792963A
Cited
US2017368A
Cited
US2600039A
Cited
US2696499A
Cited
US2741546A
Cited
US2788367A
Cited
US2727921A
Cited
US2883344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |