US3090222A
Expired / Lapsed
US
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Apparatus for continuous measurement of degree of polymerization
Assignee: Kurashiki Rayon Co Ltd
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Filing: 1960-02-17
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Granted: 1963-05-21
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Expires: 1980-02-17
Abstract
No abstract record available.
Inventors
- 👤 Akaboshi Michijiro
- 👤 Uragami Kikuji
- 👤 Okuma Kensuke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:35
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/10; G01N11/14; G01N21/00; G01N21/17; G01N21/41; G01N21/4133; G01N33/00; G01N33/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
AN APPARATUS FOR CONTINUOUSLY MEASURING THE DEGREE OF POLYMERIZATION OF THE POLYMER IN A POLYMER SOLUTION COMPRISING A CONTINUOUS VISCOMETER ADAPTED TO MEASURE THE VISCOSITY OF SAID POLYMER SOLUTION, A CONTINUOUS REFRACTOMETER ADAPTED TO CONTINUOUSLY MEASURE THE REFRACTIVE INDEX OF SAID POLYMER SOLUTION, MEANS FOR CONTINUOUSLY CONVERTING THE REFRACTIVE INDEX MEASUREMENT INTO A MEASUREMENT OF POLYMER CONCENTRATION IN THE POLYMER SOLUTION, AND MEANS FOR CONTINUOUSLY COMBINING THE VISCOSITY MEASUREMENT AND CONCENTRATION MEASUREMENT INTO A MEASUREMENT OF THE POLYMER DEGREE OF POLYMERIZATION.
Claim 2
Independent Claim
81 words
AN APPARATUS FOR CONTINUOUSLY MEASURING THE DEGREE OF POLYMERIZATION OF THE POLYMER IN A POLYMER SOLUTION COMPRISING A CONTINUOUS VISCOMETER ADAPTED TO MEASURE THE VISCOSITY OF SAID POLYMER SOLUTION, A CONTINUOUS REFRACTOMETER ADAPTED TO CONTINUOUSLY MEASURE THE REFRACTIVE INDEX OF SAID POLYMER SOLUTION, MEANS FOR CONTINUOUSLY CONVERTING THE REFRACTIVE INDEX MEASUREMENT INTO A MEASUREMENT OF POLYMER CONCENTRATION IN THE POLYMER SOLUTION, AND MEANS FOR CONTINUOUSLY COMBINING THE VISCOSITY MEASUREMENT AND CONCENTRATION MEASUREMENT INTO A MEASUREMENT OF THE POLYMER DEGREE OF POLYMERIZATION.
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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |