Patent US4715942A successfully refreshed from Google Patents.
US4715942A
Expired / Lapsed
US
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Electrophoresis apparatus
Assignee: Fujifilm Holdings Corp
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Filing: 1987-02-09
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Granted: 1987-12-29
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Expires: 2007-02-09
Abstract
Abstract An apparatus for conducting electrophoresis is fabricated by use of an electrophoresis sheet composed of two sheet members consisting of a non-conductive organic polymer film and disposed to stand facing each other, spacers having predetermined thicknesses disposed between the two sheet members at right and left edge portions, and an electrophoresis gel membrane of a uniform thickness grasped between the two sheet members. The apparatus is provided with a pair of flat plate-like supporting members for supporting the electrophoresis sheet by sandwiching it therebetween, and a spacer disposed between the electrophoresis sheet and at least one of the flat plate-like supporting members, and contacting edge portions of the electrophoresis sheet.
Inventors
- 👤 Sigeru Tezuka
- 👤 Shoichi Yamamoto
- 👤 Masayoshi Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:02
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44756; B; B01; B01D; B01D57/00; B01D57/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
An electrophoresis apparatus for conducting electrophoresis by use of an electrophoresis sheet composed of two sheet members formed of a non-conductive organic polymer film and disposed to stand facing each other, spacers having predetermined thicknesses disposed at right and left edge portions between the two sheet members, and an electrophoresis gel membrane of uniform thickness grasped between the two sheet members, wherein the improvement comprises the provision of: (i) a pair of flat plate-like supporting members for supporting said electrophoresis sheet by sandwiching it therebetween, and (ii) a spacer disposed between said electrophoresis sheet and at least one of said flat plate-like supporting members, and contacting edge portions of said electrophoresis sheet.
Claim 2
Dependent Claim
112 words
An electrophoresis apparatus for conducting electrophoresis by use of an electrophoresis sheet composed of two sheet members formed of a non-conductive organic polymer film and disposed to stand facing each other, spacers having predetermined thicknesses disposed at right and left edge portions between the two sheet members, and an electrophoresis gel membrane of uniform thickness grasped between the two sheet members, wherein the improvement comprises the provision of: (i) a pair of flat plate-like supporting members for supporting said electrophoresis sheet by sandwiching it therebetween, and (ii) a spacer disposed between said electrophoresis sheet and at least one of said flat plate-like supporting members, and contacting edge portions of said electrophoresis sheet.
Claim 3
Dependent Claim
37 words
An apparatus as defined in claim 1 wherein said spacer disposed between at least one of said flat plate-like supporting members and said electrophoresis sheet has a thickness within the range of 0.15 mm to 0.6 mm.
Claim 4
Dependent Claim
31 words
An apparatus as defined in claim 2 wherein said spacer disposed between at least one of said flat plate-like supporting members and said electrophoresis sheet has a thickness of 0.25 mm.
Claim 5
Dependent Claim
30 words
An apparatus as defined in claim 1 wherein said spacer disposed between at least one of said flat plate-like supporting members and said electrophoresis sheet has a square frame-like shape.
Claim 6
Dependent Claim
52 words
An apparatus a defined in claim 1 wherein said spaoer disposed between at least one of said flat plate-like supporting members and said electrophoresis sheet is provided with a scale for indicating a vertical distance and an indicator for indicating a slot position, which are disposed at side portions of said spacer.
Claim 7
Dependent Claim
43 words
An apparatus as defined in claim 1 wherein the other of said flat plate-like supporting members has a cutaway portion at the upper end for allowing a buffer solution to contact the upper end of said electrophoresis gel membrane of said electrophoresis sheet.
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) | 1990-12-28 | 1991-06-29 | 1991-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-28 | 1995-06-29 | 1995-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-28 | 1999-06-29 | 1999-12-29 | $7700.00 | Window Closed / Lapsed |