US3256901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic chemical injection control
Assignee: Phillips Petroleum Co
•
Filing: 1961-10-23
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Granted: 1966-06-21
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Expires: 1981-10-23
Abstract
No abstract record available.
Inventors
- 👤 Jr Marvin E Kline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:18
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0006; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/2496; Y10T137/2499; Y10T137/2509
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
BS & W CONTROL MEANS COMPRISING BS & W DETECTING MEANS INCLUDING MEANS FOR PRODUCING AN ELECTRICAL SIGNAL PROPORTIONAL TO THE BS & W CONTENT OF A FLUID, A MAGNETIC AMPLIFIER FOR SAID SIGNAL, A NONLINEAR NEGATIVE FEEDBACK CIRCUIT FOR SAID AMPLIFIER OF THE OUTPUT OF THE INPUT THEREOF; FIRST AND SECOND CIRCUITS IN PARALLEL IN SAID FEEDBACK CIRCUIT MEANS, IN SAID SECOND CIRCUIT FOR COMPLETION THEREOF AT A PREDETERMINED SIGNAL STRENGTH, WHEREBY THE ELECTRICAL OUTPUT OF SAID AMPLIFIER IS NON-LINEAR WITH RESPECT TO SAID BS & W CONTENT, A TRANDUCER FOR CONVERTING SAID ELECTRICAL OUTPUT OF SAID AMPLIFIER TO A PNEUMATIC PRESSURE, FLUID PRESSURE ACTUATED CHEMICAL INJECTION MEANS FOR INJECTING CHEMICAL INTO SAID FLUID, MEANS CONNECTING SAID TRANDUCER WITH SAID INJECTION MEANS TO CONTROL THE RATE OF OPERATION THEREOF CONTINUOUSLY RESPONSIVE TO SAID PNEUMATIC PRESSURE.
Claim 2
Dependent Claim
136 words
BS & W CONTROL MEANS COMPRISING BS & W DETECTING MEANS INCLUDING MEANS FOR PRODUCING AN ELECTRICAL SIGNAL PROPORTIONAL TO THE BS & W CONTENT OF A FLUID, A MAGNETIC AMPLIFIER FOR SAID SIGNAL, A NONLINEAR NEGATIVE FEEDBACK CIRCUIT FOR SAID AMPLIFIER OF THE OUTPUT OF THE INPUT THEREOF; FIRST AND SECOND CIRCUITS IN PARALLEL IN SAID FEEDBACK CIRCUIT MEANS, IN SAID SECOND CIRCUIT FOR COMPLETION THEREOF AT A PREDETERMINED SIGNAL STRENGTH, WHEREBY THE ELECTRICAL OUTPUT OF SAID AMPLIFIER IS NON-LINEAR WITH RESPECT TO SAID BS & W CONTENT, A TRANDUCER FOR CONVERTING SAID ELECTRICAL OUTPUT OF SAID AMPLIFIER TO A PNEUMATIC PRESSURE, FLUID PRESSURE ACTUATED CHEMICAL INJECTION MEANS FOR INJECTING CHEMICAL INTO SAID FLUID, MEANS CONNECTING SAID TRANDUCER WITH SAID INJECTION MEANS TO CONTROL THE RATE OF OPERATION THEREOF CONTINUOUSLY RESPONSIVE TO SAID PNEUMATIC PRESSURE.
References Cited (Backward Citations)
US2657700A
Cited
US2819726A
Cited
US3094675A
Cited
US3074277A
Cited
US3036224A
Cited
US3055554A
Cited
US2940593A
Cited
US3085208A
Cited
US3067133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |