US4515676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cell unit for observing electrophoresis
Assignee: KOREHA KAGUKU KOGYO KK
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Filing: 1983-11-30
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Granted: 1985-05-07
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Expires: 2003-11-30
Abstract
Abstract A cell unit for observing electrophoresis comprising a seal member in the form of an endless loop having penetrating holes passing therethrough between outside and inside of the loop at opposing positions of a circumferential wall thereof, a cell situated substantially in the inside of the loop, the cell defining therein a space for accommodating a liquid specimen, an electrophoretic property of which is to be observed, and including a pair of tubular end parts each having an opening communicated with the space and being fitted in a liquid-tight manner to the respective one of the penetrating holes in the seal members, and a pair of enclosing members, for defining, around the cell, a space for accommodating a liquid to control a temperature of the specimen in the cell, each enclosing member having an edge in the form the endless loop in close contact with a respective one end face, in the form of the loop, of the seal member ensures an easy mounting of the measurement cell at a desired position.
Inventors
- 👤 Yoshio Kawai
- 👤 Kiyoshi Kitagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:16
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
148 words
A cell unit for observing electrophoresis, said cell unit comprising: (a) an electrophoretic measurement cell; (b) first fluid conduit means for introducing a fluid specimen into said electrophoretic measurement cell; (c) second fluid conduit means for removing a fluid specimen from said electrophoretic measurement cell; (d) first and second enclosure means for enclosing said electrophoretic measurement cell; (e) a gasket seal means in the form of an endless loop disposed between said first and second enclosure means and providing a fluid-tight seal therebetween, said gasket seal means having penetrating holes therethrough through which said first and second fluid conduit means pass in a fluid-tight fashion, and; (f) said first and second enclosure means and said gasket seal means together defining a space in thermal contact with said electrophoretic measurement cell for accomodating a fluid used to control the temperature of a liquid specimen in said electrophoretic measurement cell.
Claim 2
Dependent Claim
148 words
A cell unit for observing electrophoresis, said cell unit comprising: (a) an electrophoretic measurement cell; (b) first fluid conduit means for introducing a fluid specimen into said electrophoretic measurement cell; (c) second fluid conduit means for removing a fluid specimen from said electrophoretic measurement cell; (d) first and second enclosure means for enclosing said electrophoretic measurement cell; (e) a gasket seal means in the form of an endless loop disposed between said first and second enclosure means and providing a fluid-tight seal therebetween, said gasket seal means having penetrating holes therethrough through which said first and second fluid conduit means pass in a fluid-tight fashion, and; (f) said first and second enclosure means and said gasket seal means together defining a space in thermal contact with said electrophoretic measurement cell for accomodating a fluid used to control the temperature of a liquid specimen in said electrophoretic measurement cell.
Claim 3
Dependent Claim
26 words
A cell unit as recited in claim 1 wherein said gasket seal means is circular in shape and said penetrating holes are diametrically opposite each other.
Claim 4
Dependent Claim
16 words
A cell unit as recited in claim 1 wherein said space surrounds said electrophoretic measurement cell.
Claim 5
Dependent Claim
28 words
A cell unit as recited in claim 1 wherein one of said first and second enclosure means provides visual or electronic measurement access to said electrophoretic measurement cell.
Claim 6
Dependent Claim
38 words
A cell unit as recited in claim 1 wherein at least one of said first and second enclosure means has a groove in the surface thereof which receives at least a part of said gasket seal means therein.
Claim 7
Dependent Claim
17 words
A cell unit as recited in claim 1 wherein said gasket seal means is unitary in construction.
Claim 8
Dependent Claim
33 words
A cell unit as recited in claim 1 wherein the portions of said gasket seal means through which said penetrating holes pass are enlarged relative to the remainder of said gasket seal means.
Claim 9
Dependent Claim
27 words
A cell unit as recited in claim 7 wherein said portion of said gasket seal means have U-shaped profiles in the planes perpendicular to said penetrating holes.
Claim 10
Dependent Claim
23 words
A cell unit as recited in claim 7 wherein said portions are separate pieces distinct from the remainder of said gasket seal means.
Claim 11
Dependent Claim
45 words
A cell unit as recited in claim 1 and further comprising a pair of positioning members which support said electrophoretic measurement cell, each of said positioning members being disposed in said space between one of said fluid conduit means and one of said enclosure means.
Claim 12
Dependent Claim
42 words
A cell unit as recited in claim 1 wherein one of said enclosure means comprises a flat plate and the other of said enclosure means comprises a tubular frame element the end of which remote from said electrophoretic measurement cell is closed.
Claim 13
Dependent Claim
50 words
A cell unit as recited in claim 1 wherein one of said enclosure means comprises a flat plate and the other of said enclosure means comprises a tubular frame element and a separate plate member for closing the end of said tubular frame element remote from said electrophoretic measurement cell.
Claim 14
Dependent Claim
46 words
A cell unit as recited in claim 1 and further comprising a fixing means for fixing said electrophoretic measurement cell between said first and second enclosure means by a force in a direction which compresses said gasket seal means between said first and second enclosure means.
Claim 15
Dependent Claim
36 words
A cell unit as recited in claim 1 and further comprising a third fluid conduit means for introducing a fluid into said space and a fourth fluid conduit means for removing the fluid from said space.
Claim 16
Dependent Claim
24 words
A cell unit as recited in claim 1 wherein said gasket seal means is generally planar and is at least generally circular in shape.
Claim 17
Dependent Claim
33 words
A cell unit as recited in claim 1 wherein at least one of said first and second enclosure means has a window for microscopic observation of a specimen in said electrophoretic measurement cell.
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) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |