US4624768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophoresis apparatus
Assignee: Hitachi Ltd
•
Filing: 1985-01-25
•
Granted: 1986-11-25
•
Expires: 2005-01-25
Abstract
Abstract A horizontal electrophoresis apparatus characterized by a cooling plate which consists of a sintered SiC with high thermal conductivity and good insulating properties, or sintered material composed mainly of SiC, and a Peltier element, as the heat conducting material to cool the supporting matrix or electrolyte.
Inventors
- 👤 Motoko Yoshida
- 👤 Michio Itoh
- 👤 Kunihiro Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:24
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44704; G01N27/44708
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
50 words
A horizontal electrophoresis apparatus which comprises a supporting matrix for electrophoresis, a cooling plate formed of sintered SiC for supporting said matrix, and a peltier element for cooling said cooling plate; said sintered SiC comprising mainly alpha-type SiC and containing 0.1 to 3.5 wt. % of beryllia or boron nitride.
Claim 2
Dependent Claim
50 words
A horizontal electrophoresis apparatus which comprises a supporting matrix for electrophoresis, a cooling plate formed of sintered SiC for supporting said matrix, and a peltier element for cooling said cooling plate; said sintered SiC comprising mainly alpha-type SiC and containing 0.1 to 3.5 wt. % of beryllia or boron nitride.
Claim 3
Dependent Claim
39 words
A horizontal electrophoresis apparatus as defined in claim 1, in which the sintered SiC exhibits a specific resistance of 10 10 Ω.cm or more at room temperature and thermal conductivity of 0.4 cal/cm.sec.° C. or more at room temperature.
Claim 4
Dependent Claim
37 words
A horizontal electrophoresis apparatus as defined in claim 1, in which the sintered SiC plate extends into an anolyte vessel and a catholyte vessel to cool anolyte and catholyte in addition to the supporting matrix for electrophoresis.
References Cited (Backward Citations)
JPS5749852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |