Patent US3784878A successfully refreshed from Google Patents.
Patent US2835116A successfully refreshed from Google Patents.
US2835116A
Expired / Lapsed
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Infrared analyzer and process control
Assignee: Phillips Petroleum Co
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Filing: 1955-06-09
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Granted: 1958-05-20
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Expires: 1975-06-09
Abstract
No abstract record available.
Inventors
- 👤 Elmer C Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:53
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/3504
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A METHOD OF CONTROLLING A FRACTIONATION PROCESS WHEREIN A STREAM CONTAINING ETHANE AND ETHYLENE IS FRACTIONATED TO PRODUCE AN OVERHEAD PRODUCT CONTAINING 0.1 TO 3.0 MOL PERCENT ETHANE, 0.0 TO 5.0 MOL PERCENT METHANE AND THE BALANCE SUBSTANTIALLY ALL ETHYLENE, WHEREIN A PROCESS VARIABLE IS ADJUSTABLE TO CONTROL THE PURITY OF SAID OVERHEAD PRODUCT, THE STEPS WHICH COMPRISE CONTINUOUSLY WITHDRAWING A SAMPLE FROM THE FRACTIONATION ZONE, PASSING TWIN BEAMS OF INFRARED RADIATION CONTINUOUSLY THROUGH THE WITHDRAWN SAMPLE, PASSING ONE OF SAID BEAMS BUT NOT THE OTHER OF SAID BEAMS THROUGH A BODY OF ETHANE, PRODUCING AN OUTPUT VOLTAGE REPRESENTATIVE OF THE RELATIVE INTENSITIES OF SAID BEAMS AFTER THEY HAVE PASSED THROUGH SAID SAMPLE AND SAID ETHANE, AND CONTROLLING SAID PROCESS VARIABLE IN ACCORDANCE WITH SAID VOLTAGE TO MAINTAIN A CONSTANT PURITY OF SAID OVERHEAD STREAM.
Claim 2
Independent Claim
135 words
A METHOD OF CONTROLLING A FRACTIONATION PROCESS WHEREIN A STREAM CONTAINING ETHANE AND ETHYLENE IS FRACTIONATED TO PRODUCE AN OVERHEAD PRODUCT CONTAINING 0.1 TO 3.0 MOL PERCENT ETHANE, 0.0 TO 5.0 MOL PERCENT METHANE AND THE BALANCE SUBSTANTIALLY ALL ETHYLENE, WHEREIN A PROCESS VARIABLE IS ADJUSTABLE TO CONTROL THE PURITY OF SAID OVERHEAD PRODUCT, THE STEPS WHICH COMPRISE CONTINUOUSLY WITHDRAWING A SAMPLE FROM THE FRACTIONATION ZONE, PASSING TWIN BEAMS OF INFRARED RADIATION CONTINUOUSLY THROUGH THE WITHDRAWN SAMPLE, PASSING ONE OF SAID BEAMS BUT NOT THE OTHER OF SAID BEAMS THROUGH A BODY OF ETHANE, PRODUCING AN OUTPUT VOLTAGE REPRESENTATIVE OF THE RELATIVE INTENSITIES OF SAID BEAMS AFTER THEY HAVE PASSED THROUGH SAID SAMPLE AND SAID ETHANE, AND CONTROLLING SAID PROCESS VARIABLE IN ACCORDANCE WITH SAID VOLTAGE TO MAINTAIN A CONSTANT PURITY OF SAID OVERHEAD STREAM.
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |