US4699680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for manufacturing element for electrophoresis
Assignee: DIRECTOR OF FINANCE DIVISION MINISTER'S SECRETARIAT SCIENCE AND TECHNOLOGY AGENCY
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Filing: 1985-03-28
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Granted: 1987-10-13
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Expires: 2005-03-28
Abstract
Abstract A process of manufacturing an element for electrophotresis which comprises steps of: sticking a spacer continuously to both side portions of a support web which is rolled back continuously from the rolled condition; casting on said support a solution for forming a medium membrane for electrophoresis; subjecting the support to hardening treatment to form a medium membrane; cutting off a portion of the medium membrane and support web; and sticking a cover sheet onto the medium membrane. An apparatus advantageously employable for performing the above process is disclosed.
Inventors
- 👤 Hisashi Shiraishi
- 👤 Mineo Suyefuji
- 👤 Masashi Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:35
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44704; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/108; Y10T156/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
90 words
A process for manufacturing an element for electrophoresis comprising the steps of sticking a spacer continuously to both side portions of a support web which is rolled back continuously from the rolled condition, casting on said support a solution for forming a gel medium membrane for electrophoresis, subjecting the support on which the solution is cast to a treatment to make the solution into a gel medium membrane, cutting off a portion of the gel medium membrane and support web, and sticking a cover sheet onto the gel medium membrane.
Claim 2
Dependent Claim
90 words
A process for manufacturing an element for electrophoresis comprising the steps of sticking a spacer continuously to both side portions of a support web which is rolled back continuously from the rolled condition, casting on said support a solution for forming a gel medium membrane for electrophoresis, subjecting the support on which the solution is cast to a treatment to make the solution into a gel medium membrane, cutting off a portion of the gel medium membrane and support web, and sticking a cover sheet onto the gel medium membrane.
Claim 3
Dependent Claim
23 words
The process of manufacturing an element for electrophoresis as claimed in claim 1, wherein said treatment is performed in an atmosphere of nitrogen.
Claim 4
Dependent Claim
28 words
The process of manufacturing an element for electrophoresis as claimed in claim 1, wherein said solution for forming the gel medium membrane is an an acrylamide gel-forming solution.
Claim 5
Dependent Claim
26 words
The process of manufacturing an element for electrophoresis as claimed in claim 1, wherein said cover sheet has a thickness of not greater than 50 μm.
Claim 6
Independent Claim
96 words
An apparatus for manufacturing an element for electrophoresis which comprises a means for sticking a spacer continuously to both side portions of a continuously running support web, a casting device for casting a solution for forming a gel medium membrane for electrophoresis on the continuously running support web, a casing for treating the solution to make it into a gel medium membrane, a cutting device for cutting off a portion of the gel medium membrane, said cutting device being provided with a vacuum chamber, and means for applying a cover sheet onto the gel medium membrane.
Claim 7
Independent Claim
96 words
An apparatus for manufacturing an element for electrophoresis which comprises a means for sticking a spacer continuously to both side portions of a continuously running support web, a casting device for casting a solution for forming a gel medium membrane for electrophoresis on the continuously running support web, a casing for treating the solution to make it into a gel medium membrane, a cutting device for cutting off a portion of the gel medium membrane, said cutting device being provided with a vacuum chamber, and means for applying a cover sheet onto the gel medium membrane.
Claim 8
Dependent Claim
20 words
The apparatus of manufacturing an element for electrophoresis as claimed in claim 5, wherein the casting device comprises a hopper.
Claim 9
Dependent Claim
32 words
The apparatus of manufacturing an element for electrophoresis as claimed in claim 5, wherein the cutting device is provided with a means for removing the cut-off portion of the gel medium membrane.
References Cited (Backward Citations)
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Cited
US3120037A
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US3392077A
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US3429957A
Cited
US3860473A
Cited
US4295907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-12 | 1991-04-13 | 1991-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-12 | 1995-04-13 | 1995-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-12 | 1999-04-13 | 1999-10-13 | $7700.00 | Window Closed / Lapsed |