Patent US4750506A successfully refreshed from Google Patents.
US4750506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for processing a slab gel
Assignee: Individual
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Filing: 1986-12-24
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Granted: 1988-06-14
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Expires: 2006-12-24
Abstract
Abstract An apparatus for staining and destaining one or more slab gels subsequent to electrophoresis comprises a liquid impermeable enclosure having a bottom, a sidewall portion attached to the bottom and a removable top. A plurality of channels are formed in the sidewall portion of the container. At least one and preferably a plurality of cassettes are provided for retaining the slab gels. The cassettes are disposed within the channels. Each cassette comprises a pair of plates that are hinged together at one end and have a lock at the other end to secure the plates together. Each of the plates has a recess therein and a fluid permeable mesh covers each recess to form a slab gel retaining chamber therebetween. Depending upon the fluid used in the container, the slab gels can either be stained or destained. An advantage of the present apparatus is that the slab gels can be removed from the container without having to pour-off the staining or destaining solutions, thus achieving economy of material usage. Additionally, the cassettes protect the slab gels from damage since the slab gels are loosely retained therein and can be transferred from a staining container to a destaining container merely by transferring the cassettes containing the slab gel.
Inventors
- 👤 Stephanie A. Olexa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:43
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44704
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
159 words
An apparatus for processing a slab gel comprising a liquid impermeable enclosure having a bottom, sidewalls attached to said bottom and a top, said sidewalls including a plurality of indexing means formed on two opposite sidewalls therein, and at least one cassette for retaining said slab gel, said cassette being supported and disposed within said indexing means, said cassette comprising a first and a second support plate, each of said support plates having a first and a second major surface, said support plates being arranged so that said second major surface of said first support plate is adjacent to said second major surface of said second support plate, each of said support plates having a recess therein, said first major surface of each of said support plates having a liquid permeable membrane extending across said recess so as to form a slab retaining chamber therebetween, and attachment means for securing said first support plate to said second support plate.
Claim 2
Independent Claim
159 words
An apparatus for processing a slab gel comprising a liquid impermeable enclosure having a bottom, sidewalls attached to said bottom and a top, said sidewalls including a plurality of indexing means formed on two opposite sidewalls therein, and at least one cassette for retaining said slab gel, said cassette being supported and disposed within said indexing means, said cassette comprising a first and a second support plate, each of said support plates having a first and a second major surface, said support plates being arranged so that said second major surface of said first support plate is adjacent to said second major surface of said second support plate, each of said support plates having a recess therein, said first major surface of each of said support plates having a liquid permeable membrane extending across said recess so as to form a slab retaining chamber therebetween, and attachment means for securing said first support plate to said second support plate.
Claim 3
Dependent Claim
12 words
The apparatus as described in claim 1 wherein said top is removable.
Claim 4
Dependent Claim
20 words
The apparatus as described in claim 1 wherein said indexing means includes a plurality of channels formed in said sidewalls.
Claim 5
Dependent Claim
15 words
The apparatus as described in claim 1 wherein said liquid permeable membrane comprised a mesh.
Claim 6
Dependent Claim
21 words
The apparatus as described in claim 1 wherein said attachment means comprises at least one hinge and at least one lock.
Claim 7
Dependent Claim
19 words
The apparatus as described in claim 1 further including a pour lip in said sidewall portion of said enclosure.
Claim 8
Independent Claim
236 words
An apparatus for staining and destaining electrophoresis slab gels utilizing a suitable staining or destaining liquid, said apparatus comprising a substantially rectangular, liquid impermeable container having two pairs of oppositely disposed sidewalls, a bottom wall attached to said sidewalls and a top, a plurality of substantially parallel channels being formed in an interior surface of one of said pairs of oppositely disposed sidewalls, said channels extending from a top end of said one pair of sidewalls to stops formed in a bottom end thereof, said channels in said one pair of oppositely disposed sidewalls being mutually aligned, and a plurality of cassettes for retaining said slab gels each of said cassettes being supported and disposed within one of said channels, each of said cassettes comprising a first and a second support plate, each of said support plates being arranged in face-to-face relation so that said second major surface of said first support plate is adjacent to said second major surface of said second support plate, each of said support plates having a centrally disposed recess therein, said first major surface of each of said support plates having a mesh extending across said centrally disposed recess so as to form a gel retaining chamber therebetween, saif first and second support plates being attached together at one end by at least one hinge and being detachably attached together at an opposite end by at least one snap lock.
Claim 9
Independent Claim
236 words
An apparatus for staining and destaining electrophoresis slab gels utilizing a suitable staining or destaining liquid, said apparatus comprising a substantially rectangular, liquid impermeable container having two pairs of oppositely disposed sidewalls, a bottom wall attached to said sidewalls and a top, a plurality of substantially parallel channels being formed in an interior surface of one of said pairs of oppositely disposed sidewalls, said channels extending from a top end of said one pair of sidewalls to stops formed in a bottom end thereof, said channels in said one pair of oppositely disposed sidewalls being mutually aligned, and a plurality of cassettes for retaining said slab gels each of said cassettes being supported and disposed within one of said channels, each of said cassettes comprising a first and a second support plate, each of said support plates being arranged in face-to-face relation so that said second major surface of said first support plate is adjacent to said second major surface of said second support plate, each of said support plates having a centrally disposed recess therein, said first major surface of each of said support plates having a mesh extending across said centrally disposed recess so as to form a gel retaining chamber therebetween, saif first and second support plates being attached together at one end by at least one hinge and being detachably attached together at an opposite end by at least one snap lock.
Claim 10
Dependent Claim
16 words
The apparatus as described in claim 8 wherein a pouring lip is formed in said sidewall.
Claim 11
Dependent Claim
251 words
A destainer for electrophoresis slab gels utilizing a suitable destaining solution, said destainer comprising a substantially rectangular, liquid impermeable container having two pairs of oppositely disposed sidewalls, a bottom wall attached to said sidewalls, and a top, a plurality of substantially parallel channels being formed in an interior surface of one of said pairs of oppositely disposed sidewalls, said channels extending from a top end of said one pair of sidewalls to stops formed in a bottom end thereof, said channels in said one pair of oppositely disposed sidewalls being mutually aligned, a plurality of cassettes disposed within different ones of said mutually aligned channels, each of said cassettes comprising substantially rectangular first and second support plates, each of said plates having a first and second major surfaces, said support plates being arranged in face-to-face relation so that said second major surface of said first support plate is adjacent to said second major surface of said second support plate, each of said support plates having a centrally disposed, substantially rectangular recess therein, said first major surface of each of said support plates having a mesh integral therewith and extending across said central recess os as to form a chamber therebetween, said first and second plates being attached together at one end by at least one hinge and detachably attached together at an opposite end by at least one snap lock, and destaining means disposed within said recess in at least one of said cassettes for removing stain from said destaining solution.
Claim 12
Dependent Claim
251 words
A destainer for electrophoresis slab gels utilizing a suitable destaining solution, said destainer comprising a substantially rectangular, liquid impermeable container having two pairs of oppositely disposed sidewalls, a bottom wall attached to said sidewalls, and a top, a plurality of substantially parallel channels being formed in an interior surface of one of said pairs of oppositely disposed sidewalls, said channels extending from a top end of said one pair of sidewalls to stops formed in a bottom end thereof, said channels in said one pair of oppositely disposed sidewalls being mutually aligned, a plurality of cassettes disposed within different ones of said mutually aligned channels, each of said cassettes comprising substantially rectangular first and second support plates, each of said plates having a first and second major surfaces, said support plates being arranged in face-to-face relation so that said second major surface of said first support plate is adjacent to said second major surface of said second support plate, each of said support plates having a centrally disposed, substantially rectangular recess therein, said first major surface of each of said support plates having a mesh integral therewith and extending across said central recess os as to form a chamber therebetween, said first and second plates being attached together at one end by at least one hinge and detachably attached together at an opposite end by at least one snap lock, and destaining means disposed within said recess in at least one of said cassettes for removing stain from said destaining solution.
Claim 13
Dependent Claim
12 words
The destainer as described in claim 9 wherein said top is removable.
Claim 14
Dependent Claim
16 words
The destainer as described in claim 9 wherein a pour lip is formed in said sidewall.
Claim 15
Dependent Claim
19 words
The destainer as described in claim 9 wherein said destaining means comprises a packet of a stain absorbing material.
Claim 16
Dependent Claim
21 words
The destainer as described in claim 12 wherein said packet comprises a liquid permeable material for containing said stain absorbing material.
Claim 17
Dependent Claim
23 words
The destainer as described in claim 13 wherein said liquid permeable material is selected from the group consisting of nylon, polyester and cotton.
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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) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |