Patent US2059862A successfully refreshed from Google Patents.
Patent US2897247A successfully refreshed from Google Patents.
US2897247A
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Light scattering device and control system
Assignee: Phillips Petroleum Co
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Filing: 1955-06-16
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Granted: 1959-07-28
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Expires: 1975-06-16
Abstract
No abstract record available.
Inventors
- 👤 Eldon J Marak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:08
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/47
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
THE METHOD OF CONTROLLING A POLYMERIZATION PROCESS TO OBTAIN A PRODUCT HAVING A DESIRED MOLECULAR WEIGHT WHICH COMPRISES TRANSMITTING A BEAM OF RADIATION INTO A SAMPLE OF THE POLYMERIZATION PRODUCT MATERIAL, MEASURING THE RATIO OF RADIATION SCATTERED FROM SAID SAMPLE AT A GIVEN ANGLE TO THE TRANSMITTED RADIATION, AND ADJUSTING THE PRESSURE IN THE POLYMERIZATION REACTOR SO THAT THE MEASURED RADIATION RATIO IS MAINTAINED AT A PRESELECTED VALUE.
References Cited (Backward Citations)
US2373888A
Cited
US2316239A
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US2421946A
Cited
US2462995A
Cited
US2547212A
Cited
US2690694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |