US3988230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chamber and process for crossed immunoelectro-phoresis
Assignee: Medac Gesellschaft fuer Klinische Spezialpraeparate mbH
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Filing: 1976-03-25
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Granted: 1976-10-26
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Expires: 1996-03-25
Abstract
Abstract A process for performing the electroimmunomigration step (the second phase of a crossed-electro-phoresis process) for separating protein-containing biological fluids. The chamber utilized in practicing the process preferably includes a base plate having a well defined therein, a depot subdividing the well into migration and connecting wells, and a device for defining a vertically variable gap in the depot so that a first carrier having a protein-containing sample in the depot is in contact with a second carrier in the migratory well and/or connecting well. Various devices may be provided for particularly defining the gap, and for defining the depot and the areas of the wells adjacent the depot.
Inventors
- 👤 Walter Krotz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:32
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44756; G01N27/44773
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
137 words
A process for performing crossed-electrophoresis comprising the steps of: a. subjecting a protein sample in a first carrier containing the protein sample to disc or flat disc electrophoresis, b. placing the so subjected first carrier in the depot of a chamber, said chamber including a base plate having a well therein, the depot separating the well into a migration well and a connecting well, and means being provided for defining a vertically variable gap in the depot, c. placing a second carrier distinct from said first carrier in the migration well of the chamber so that the first and second carriers are in contact with one another through the gap, d. subjecting said second carrier in said chamber to electroimmunomigration, whereby migration of protein from said sample in said first carrier into said second carrier takes place.
Claim 2
Dependent Claim
137 words
A process for performing crossed-electrophoresis comprising the steps of: a. subjecting a protein sample in a first carrier containing the protein sample to disc or flat disc electrophoresis, b. placing the so subjected first carrier in the depot of a chamber, said chamber including a base plate having a well therein, the depot separating the well into a migration well and a connecting well, and means being provided for defining a vertically variable gap in the depot, c. placing a second carrier distinct from said first carrier in the migration well of the chamber so that the first and second carriers are in contact with one another through the gap, d. subjecting said second carrier in said chamber to electroimmunomigration, whereby migration of protein from said sample in said first carrier into said second carrier takes place.
Claim 3
Dependent Claim
22 words
A process as recited in claim 1 comprising the further step of providing a polyacrylamide or starch gel as said first carrier.
Claim 4
Dependent Claim
20 words
A process as recited in claim 2 comprising the further step of providing an agarose gel as said second carrier.
Claim 5
Dependent Claim
24 words
A process as recited in claim 1 comprising the further step of providing a filter paper or an acetate foil as said first carrier.
Claim 6
Dependent Claim
20 words
A process as recited in claim 4 comprising the further step of providing an agarose gel as said second carrier.
Claim 7
Dependent Claim
20 words
A process as recited in claim 1 comprising the further step of providing an agarose gel as said second carrier.
Claim 8
Dependent Claim
26 words
A process as recited in claim 6 comprising the further step of adding antiserum to said gel in the migration well for precipitating the protein fractions.
Claim 9
Dependent Claim
30 words
A process as recited in claim 7 comprising the further step of leaving a strip of said gel in the migration well immediately adjacent to said depot free from anti-serum.
Claim 10
Dependent Claim
29 words
A process as recited in claim 1 comprising the further step of placing said second carrier in said connecting well in addition to placing it in said migration well.
Claim 11
Dependent Claim
31 words
A process as recited in claim 1 comprising the further step of introducing an agarose gel into the chamber in a layer thickness of about 1 mm as said second carrier.
Claim 12
Dependent Claim
31 words
A process as recited in claim 1 comprising the further step of introducing a plurality of carriers prepared with antiserum, each carrier separated by an impermeable layer, in said migration well.
Claim 13
Dependent Claim
20 words
A process as recited in claim 1 comprising the further step of preparing each of said carriers with different antiserum.
Claim 14
Dependent Claim
27 words
A process as recited in claim 11 comprising the further step of preparing each of said carriers with different dilution strips of one and the same antiserum.
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) | 1979-10-26 | 1980-04-26 | 1980-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-26 | 1984-04-26 | 1984-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-26 | 1988-04-26 | 1988-10-26 | $7700.00 | Window Closed / Lapsed |