Patent US2953440A successfully refreshed from Google Patents.
US2953440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analyzer and control apparatus
Assignee: Phillips Petroleum Co
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Filing: 1956-06-15
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Granted: 1960-09-20
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Expires: 1976-06-15
Abstract
No abstract record available.
Inventors
- 👤 Harry N Claudy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:05
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/75; G01N21/77; G01N21/82; G01N21/83; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7761
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A PHOTOMETRIC ANALYZER COMPRISING A SAMPLE CELL, A SOURCE OF RADIATION POSITIONED WITH RESPECT TO SAID CELL SO THAT RADIATION PASSES THROUGH SAID CELL, MEANS TO MEASURE RADIATION TRANSMITTED FROM SAID SOURCE THROUGH SAID CELL, MEANS TO CIRCULATE A FLUID THROUGH SAID CELL, MEANS TO ADD A MATERIAL TO THE FLUID TO BE CIRCULATED THROUGH SAID CELL IN DISCRETE MASSES COMPRISING A CONDUIT POSITIONED ABOVE THE MEANS TO CIRCULATE A FLUID THROUGH SAID CELL SO THAT SAID MASSES FALL FROM SAID CONDUIT INTO THE FLUID TO BE CIRCULATED, AND A VALUE IN SAID CONDUIT, MEANS TO COUNT THE NUMBER OF ADDITIONS OF SAID MASSES, AND MEANS RESPONSIVE TO SAID MEANS TO COUNT TO ADJUST THE OPENING OF SAID VALUE TO CONTROL THE RATE OF ADDITION OF SAID MASSES SO THAT MATERIAL IS ADDED TO THE FLUID AT A PREDETERMINED RATE.
Claim 2
Dependent Claim
140 words
A PHOTOMETRIC ANALYZER COMPRISING A SAMPLE CELL, A SOURCE OF RADIATION POSITIONED WITH RESPECT TO SAID CELL SO THAT RADIATION PASSES THROUGH SAID CELL, MEANS TO MEASURE RADIATION TRANSMITTED FROM SAID SOURCE THROUGH SAID CELL, MEANS TO CIRCULATE A FLUID THROUGH SAID CELL, MEANS TO ADD A MATERIAL TO THE FLUID TO BE CIRCULATED THROUGH SAID CELL IN DISCRETE MASSES COMPRISING A CONDUIT POSITIONED ABOVE THE MEANS TO CIRCULATE A FLUID THROUGH SAID CELL SO THAT SAID MASSES FALL FROM SAID CONDUIT INTO THE FLUID TO BE CIRCULATED, AND A VALUE IN SAID CONDUIT, MEANS TO COUNT THE NUMBER OF ADDITIONS OF SAID MASSES, AND MEANS RESPONSIVE TO SAID MEANS TO COUNT TO ADJUST THE OPENING OF SAID VALUE TO CONTROL THE RATE OF ADDITION OF SAID MASSES SO THAT MATERIAL IS ADDED TO THE FLUID AT A PREDETERMINED RATE.
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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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |