US2701210A
Expired / Lapsed
US
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Continuous process for preparing a solution of constant composition
Assignee: Eastman Kodak Co
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Filing: 1950-02-01
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Granted: 1955-02-01
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Expires: 1970-02-01
Abstract
No abstract record available.
Inventors
- 👤 Webster E Fisher
- 👤 Robert E Gillmor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:07
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/11; D; D01; D01D; D01D1/00; D01D1/06; C08J2301/00; C08J2301/08; C08J2301/10; C08J2301/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
A METHOD OF CONTINUOUSLY PREPARING A SOLUTION OF SOLID IN A SOLVENT THEREFOR, SAID SOLUTION HAVING A PREDETERMINED DESIRED CONSTANT COMPOSITION WHICH COMPRISES CONTINUOUSLY ADDING SAID SOLID AND SOLVENT THEREFOR TO A MIXING VESSEL AND STIRRING TO PROMOTE SOLUTION OF THE SOLID INTO THE SOLVENT, MEASURING THE TEMPERATURE OF THE RESULTANT SOLUTION, ALSO MEASURING THE VISCOSITY OF SAID SOLUTION, AND GAUGING THE FURTHER ADDITION OF AT LEAST ONE OF SAID MATERIALS BASED ON THE AFORESAID MEASUREMENTS OF BOTH THE TEMPERATURE AND VISCOSITY, SAID FURTER ADDITION BEING AUTOMATICALLY CONTROLLED AND MADE BASED ON THE AFORESAID MEASUREMENTS OF BOTH THE TEMPERATURE AND VISCOSITY.
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) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |