US3216434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additive injection system
Assignee: Phillips Petroleum Co
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Filing: 1962-01-02
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Granted: 1965-11-09
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Warren D Lovendahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:04
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/131; G05D11/132; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0363; Y10T137/2496; Y10T137/2514; Y10T137/2531; Y10T137/2559; Y10T137/2564; Y10T137/2567; Y10T137/2569; Y10T137/8158
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
A METHOD OF INJECTING AN ADDITIVE INTO A FLOWING STREAM OF FLUID AND RECORDING THE AMOUNT OF ADDITIVE INJECTED, COMPRISING THE STEPS OF: PASSING SAID FLUID THROUGH A FLUID CONDUIT; PRODUCING ELECTRICAL PULSES RESPONSIVE TO SAID FLOW OF FLUID AT A RATE PROPORTIONAL TO SAID RATE OF FLOW; ACTUATING ADDITIVE INJECTION MEANS RESPONSIVE TO SAID PULSES TO INJECT A PREDETERMINED AMOUNT OF ADDITIVE INTO SAID CONDUIT FOR EACH OF SAID PULSES; DETECTING AND RECORDING EACH INITIATION OF FLOW OF SAID ADDITIVE THEREBY DETECTING AND RECORDING THE NUMBER OF SUCH INJECTIONS MADE; AND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |