US4709810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container for an electrophoretic support medium
Assignee: Helena Laboratories Corp
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Filing: 1986-11-14
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Granted: 1987-12-01
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Expires: 2006-11-14
Abstract
Abstract A container for protecting and enclosing an electrophoretic support medium. The container includes a top portion and a bottom portion, which when closed sealingly engage one another. The bottom portion has a recess formed therein for accommodating the support medium and at least a portion of the recess has a substantially smooth planar surface. A liquid disposed between and in contact with the planar surface of the bottom portion and the support medium provides sufficient contact adhesion to securely retain the support medium within the recess.
Inventors
- 👤 David G. Mayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:06
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44704
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
169 words
A container for protecting and enclosing an electrophoretic support medium having a base sheet with at least two opposed major surfaces and a layer of an electrophoretic gel adhered to one of the major surfaces of the base sheet, comprising: a top portion and a bottom portion which when closed being sealingly engageable with one another; said bottom portion having a recess therein for accommodating the support medium, at least a portion of said recess having a substantially smooth planar surface; and a liquid being disposed between the planar surface of said bottom portion and the other surface of said base sheet, said liquid being in surface contact with the other surface of said base sheet and the planar surface of said recess, whereby the support medium may be retained in said recess as a result of the contact adhesion between the other surface of said base sheet and said liquid, and as a result of the contact adhesion between the planar surface of said recess and said liquid.
Claim 2
Dependent Claim
169 words
A container for protecting and enclosing an electrophoretic support medium having a base sheet with at least two opposed major surfaces and a layer of an electrophoretic gel adhered to one of the major surfaces of the base sheet, comprising: a top portion and a bottom portion which when closed being sealingly engageable with one another; said bottom portion having a recess therein for accommodating the support medium, at least a portion of said recess having a substantially smooth planar surface; and a liquid being disposed between the planar surface of said bottom portion and the other surface of said base sheet, said liquid being in surface contact with the other surface of said base sheet and the planar surface of said recess, whereby the support medium may be retained in said recess as a result of the contact adhesion between the other surface of said base sheet and said liquid, and as a result of the contact adhesion between the planar surface of said recess and said liquid.
Claim 3
Dependent Claim
11 words
The container defined in claim 1, wherein said liquid includes water.
Claim 4
Dependent Claim
35 words
The container defined in claim 2, wherein said water provides moisture to said recess so that the shelf life of said electrophoretic gel is increased by reducing the rate of dehydration of said electrophoretic gel.
Claim 5
Dependent Claim
12 words
The container defined in claim 1, wherein said liquid includes a buffer.
Claim 6
Dependent Claim
12 words
The container defined in claim 1, wherein said liquid includes a preservative.
Claim 7
Dependent Claim
12 words
The container defined in claim 1, wherein said liquid includes a stabilizer.
Claim 8
Dependent Claim
20 words
The container defined in claim 1, wherein said liquid includes a surfacant for increasing the wetting ability of said liquid.
Claim 9
Dependent Claim
26 words
The container defined in claim 1, wherein the top portion of said container is spaced apart from said recess in which the support medium is located.
Claim 10
Dependent Claim
29 words
The container defined in claim 1, wherein said top portion and said bottom portion are hingedly connected to one another to permit the opening and closing of said container.
Claim 11
Dependent Claim
107 words
The container defined in claim 1, wherein said top portion and said bottom portion form a cavity therebetween which includes said first mentioned recess, said recess of said bottom portion has a continuous sealing surface; and said top portion has a protruding continuous rim forming a second recess, and said rim having a continuous sealing surface, whereby when said container is closed said rim extends into said recess of said bottom portion and engages the continuous sealing surface of said bottom portion and the protruding rim of said top portion is spaced from said recess and said support medium retained in the recess of said bottom portion.
Claim 12
Dependent Claim
63 words
The container defined in claim 1, wherein said recess further comprises at least one valley to separate the planar surface of said recess into at least two flat plateau portions, whereby air spaces between the base sheet of said support medium and the plateau portions of said planar surface are substantially reduced to increase the retention of said base sheet within said recess.
Claim 13
Dependent Claim
58 words
The container defined in claim 1, wherein said recess further comprises at least one additional recess situated at least partially beneath said base sheet so that access to the other surface of said base sheet may be gained to permit ease of removal of said base sheet and said layer of electrophoretic gel adhered thereto from said recess.
Claim 14
Dependent Claim
58 words
The container defined in claim 12, wherein said top portion further comprises at least one protruding member which when said container is in a closed position is accommodated by said additional recess to limit the engageability of said top portion and said bottom portion and to ensure that said top portion is spaced apart from said support medium.
Claim 15
Dependent Claim
30 words
The container defined in claim 1, wherein said planar surface of said bottom portion further comprises locating means protruding into said recess for locating said support medium in said recess.
Claim 16
Dependent Claim
15 words
The container defined in claim 1, wherein said container is made of a polymeric material.
Claim 17
Dependent Claim
12 words
The container defined in claim 15, wherein the polymeric material is styrene.
Claim 18
Dependent Claim
126 words
A container for protecting and enclosing an electrophoretic support medium having a base sheet with at least two opposed major surfaces and a layer of an electrophoretic gel adhered to one of the major surfaces of the base sheet, comprising: a top portion and a bottom portion which when closed being sealingly engageable with one another; and said bottom portion having a recess dimensioned to accommodate the support medium therein and at least a portion of said recess having a substantially smooth planar surface, so that a liquid solution placed between said planar surface and the other surface of said base sheet may securely retain said support medium within said recess as a result of the contact adhesion between said liquid solution and the contacting surfaces.
Claim 19
Dependent Claim
126 words
A container for protecting and enclosing an electrophoretic support medium having a base sheet with at least two opposed major surfaces and a layer of an electrophoretic gel adhered to one of the major surfaces of the base sheet, comprising: a top portion and a bottom portion which when closed being sealingly engageable with one another; and said bottom portion having a recess dimensioned to accommodate the support medium therein and at least a portion of said recess having a substantially smooth planar surface, so that a liquid solution placed between said planar surface and the other surface of said base sheet may securely retain said support medium within said recess as a result of the contact adhesion between said liquid solution and the contacting surfaces.
Claim 20
Dependent Claim
20 words
The container defined in claim 17, wherein said top portion and said bottom portion are hingedly joined along one edge.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |