US3941678A
Expired / Lapsed
US
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Apparatus for electrophoretic analysis
Assignee: Shimadzu Seisakusho Ltd
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Filing: 1975-02-20
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Granted: 1976-03-02
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Expires: 1995-02-20
Abstract
Abstract Apparatus for electrophoretic analysis of ions or like electrically charged particles, wherein the potential gradients of the different kinds of ions contained in a liquid column formed in an electrophoretic capillary tube are detected and the ratio between potential gradient of a selected one of said different kinds of ions and that of each of the other kinds of ions is calculated to obtain a value relating to the mobility of each of said different kinds of ions.
Inventors
- 👤 Junichi Akiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:15
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
93 words
Apparatus for electrophoretic analysis of ions and like electrically charged particles comprising: a capillary tube; means for providing within said tube a liquid column containing different kinds of ions; means for providing a potential difference between the opposite ends of said liquid column to separate said ions into different zones; means for detecting the potential gradients of said ions in said separated zones; and operation circuit means for calculating the ratio between the potential gradient of one of said different kinds of ions and that of each of the other kinds of ions.
Claim 2
Dependent Claim
93 words
Apparatus for electrophoretic analysis of ions and like electrically charged particles comprising: a capillary tube; means for providing within said tube a liquid column containing different kinds of ions; means for providing a potential difference between the opposite ends of said liquid column to separate said ions into different zones; means for detecting the potential gradients of said ions in said separated zones; and operation circuit means for calculating the ratio between the potential gradient of one of said different kinds of ions and that of each of the other kinds of ions.
Claim 3
Dependent Claim
17 words
The apparatus of claim 1, further including means for indicating the output from said operation circuit means.
Claim 4
Dependent Claim
42 words
The apparatus of claim 2, wherein said liquid column comprises a leading electrolyte containing leading ions, a terminal electrolyte containing terminal ions and a sample solution containing a single or different kinds of ions and interposed between said leading and terminal electrolytes.
Claim 5
Dependent Claim
65 words
The apparatus of claim 3, wherein said detecting means comprises a first detector for detecting the potential gradient of said leading ions and a second detector for detecting the potential gradient of each of said sample ions; and wherein said operation circuit means calculates the ratio of the potential gradient of each of said different kinds of sample ions to that of said leading ions.
Claim 6
Dependent Claim
60 words
The apparatus of claim 1, further including means for storing the potential gradient of a particular one of said different kinds of ions detected by said detecting means, and wherein said operation circuit means calculates the ratio between the potential gradient of said particular one kind of ions to the potential gradient of each of the other kinds of ions.
Claim 7
Dependent Claim
129 words
Apparatus for electrophoretic analysis of ions and like electrically charged particles, comprising; a capillary tube; means for providing within said capillary tube a liquid column containing different kinds of ions; means for producing a potential difference between the opposite ends of said liquid column to separate said ions into different zones; means for detecting the potential gradients of said different kinds of ions; means for detecting the migration speed of at least one of said different kinds of ions; operation circuit means for performing a predetermined operation on the outputs from said potential gradient detecting means and said migration speed detecting means to produce an output corresponding to the mobility of each of said different kinds of ions; and means for indicating the output from said operation circuit means.
Claim 8
Dependent Claim
129 words
Apparatus for electrophoretic analysis of ions and like electrically charged particles, comprising; a capillary tube; means for providing within said capillary tube a liquid column containing different kinds of ions; means for producing a potential difference between the opposite ends of said liquid column to separate said ions into different zones; means for detecting the potential gradients of said different kinds of ions; means for detecting the migration speed of at least one of said different kinds of ions; operation circuit means for performing a predetermined operation on the outputs from said potential gradient detecting means and said migration speed detecting means to produce an output corresponding to the mobility of each of said different kinds of ions; and means for indicating the output from said operation circuit means.
Claim 9
Dependent Claim
42 words
The apparatus of claim 6, wherein said liquid column comprises a leading electrolyte containing leading ions, a terminal electrolyte containing terminal ions and a sample solution containing a single or different kinds of ions and interposed between said leading and terminal electrolytes.
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) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |