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US4148703A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of electrophoretic purification of enzymes and peptides by means of an adjustable, specialized, geometrically located electrode system

Assignee: Individual
•
Filing: 1976-02-11
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Granted: 1979-04-10
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Expires: 1996-02-11
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Abstract

Abstract The method of electrophoretic purification of enzymes & peptides which is a continuous, modularized, one-step operation. The method enables the user to secure a high purification of enzymes and peptides simultaneously as it allows their purification on a large scale, the process is modularized with interchangeable parts and contains several divergent configurations such as diagonal linear electrodes, point or ball electrodes, parabolic electrodes, arced electrodes, and other geometrically shaped electrodes. The modularization permits the easy insertion and removal of different geometrically shaped electrodes which allow a multifunctional versatile implementation and application of electrophoresis in the purification of electrically charged biomolecules. The different geometrically shaped electrodes also permit potentially different gradients, thereby enabling different particle velocities, finer separations, and continuous electrophoresis, by means of a higher voltage, in a smaller area, with a decrease in power expenditure. The method includes such innovative features as automatic switching, and repetitive & selective operation of the divergent geometrically shaped electrode systems. The automatic switching consists of electronic circuits which alternately select the various electrode systems to be turned on and off at a given time independently of one another, for a given duration of time, in order to maintain a clearly defined electrical field distribution, or gradient, along the width and length of the gel. The repetitive & selective operation of the divergent geometrically shaped electrode systems enable the selection of the most suitable geometrically shaped electrode system to obtain optimum separation in the purification of particular electrically charged biomolecules.

Inventors

  • 👤 Moshe Trop
  • 👤 Joseph Herbst

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 10:26
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44704; G01N27/44713; C; C12; C12N; C12N9/00; G01N27/44756; G01N27/44773

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 148 words
An improvement in the method of electrophoretic purification of enzymes and peptides on a polyacrylamide gel, wherein the improvement includes the adaptation of geometrically located electrode systems situated both in a vertical electrical field and in a horizontal electrical field, which said improvement enables a high purification simultaneously as it allows purification on a large scale, which said improved method having steps comprising: Situating divergent geometrically located and divergent geometrically shaped electrode systems in two separate electrical fields, which said electrical fields comprise a vertical electrical field and a horizontal electrical field; operating said electrical fields intermittently during selective repetitive periods of time; applying a vertical vector, by means of the vertical electrical field systems, to separate the enzymes and peptides in accordance with their mobility; and, applying a horizontal vector, by means of the horizontal electrical field systems, to cause the enzymes and peptides to move horizontally.
Claim 2
Dependent Claim 148 words
An improvement in the method of electrophoretic purification of enzymes and peptides on a polyacrylamide gel, wherein the improvement includes the adaptation of geometrically located electrode systems situated both in a vertical electrical field and in a horizontal electrical field, which said improvement enables a high purification simultaneously as it allows purification on a large scale, which said improved method having steps comprising: Situating divergent geometrically located and divergent geometrically shaped electrode systems in two separate electrical fields, which said electrical fields comprise a vertical electrical field and a horizontal electrical field; operating said electrical fields intermittently during selective repetitive periods of time; applying a vertical vector, by means of the vertical electrical field systems, to separate the enzymes and peptides in accordance with their mobility; and, applying a horizontal vector, by means of the horizontal electrical field systems, to cause the enzymes and peptides to move horizontally.
Claim 3
Dependent Claim 65 words
An improved method as recited in claim 1 comprising the further step of alternately selecting the various electrode systems by means of automatic switching, which said automatic switching turns on and off said electrode systems independently of one another for a given period of time and which said automatic switching maintains a clearly defined electrical field distribution and gradient along the width of the gel.
Claim 4
Dependent Claim 87 words
An improvement in the method of electrophoretic purification of enzymes and peptides on a polyacrylamide gel, wherein the improvement includes the selective application of divergent geometrically shaped electrode systems, which said divergent geometrically shaped electrodes enable a high purification continuously on a large scale, which said improved method having steps comprising: Applying different particle velocities by means of divergent geometrically shaped electrode systems; and, enabling a finer separation and a continuous separation of said enzymes and peptides by means of an increased voltage in a decreased area.
Claim 5
Dependent Claim 87 words
An improvement in the method of electrophoretic purification of enzymes and peptides on a polyacrylamide gel, wherein the improvement includes the selective application of divergent geometrically shaped electrode systems, which said divergent geometrically shaped electrodes enable a high purification continuously on a large scale, which said improved method having steps comprising: Applying different particle velocities by means of divergent geometrically shaped electrode systems; and, enabling a finer separation and a continuous separation of said enzymes and peptides by means of an increased voltage in a decreased area.
Claim 6
Dependent Claim 51 words
An improved method as recited in claim 3 comprising the further step of inserting or removing divergent geometrically shaped electrode systems by means of diverse modularized interchangeable units of divergent geometrically shaped electrodes which said interchangeable units having interconnection bracket means to hook onto the side of the rectangular gel structure.
Claim 7
Dependent Claim 24 words
The purification method using divergent geometrically shaped electrode systems, as recited in claim 3, which said electrode systems comprising concave and convex electrode systems.
Claim 8
Dependent Claim 24 words
The purification method using divergent geometrically shaped electrode systems as recited in claim 3, which said electrode systems comprising point and ball electrode systems.
Claim 9
Dependent Claim 32 words
The purification method using divergent geometrically shaped electrode systems as recited in claim 3, which said electrode systems comprising U shaped, inverted U shaped, V shaped and inverted V shaped electrode systems.

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-04-09 1982-10-09 1983-04-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-04-09 1986-10-09 1987-04-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-04-09 1990-10-09 1991-04-10 $7700.00 Window Closed / Lapsed

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