Chemistry: electrical and wave energy – Processes and products – Electrophoresis or electro-osmosis processes and electrolyte...
Reexamination Certificate
2006-01-17
2006-01-17
Nguyen, Nam (Department: 1753)
Chemistry: electrical and wave energy
Processes and products
Electrophoresis or electro-osmosis processes and electrolyte...
C204S456000, C204S470000, C204S606000, C204S616000
Reexamination Certificate
active
06986836
ABSTRACT:
An electrophoresis gel is prepared with indicia incorporated into the gel itself rather than on a label or backing that is adhered to the gel. According to one method, the indicia are applied by first coating a solid surface that will be used as one internal surface of a gel mold with a solution of a water-permeable polymer, allowing the coating to dry, imprinting indicia in ink on the dry coating, and then forming the gel over the coating. In a variation on this method, the indicia are applied to a sheet which is then placed against the mold surface, the sheet being either a liner that is separable from the gel yet coated with the polymer or a sheet of the polymer itself. Alternatively, the indicia are printed directly on the mold surface without first coating the surface. This is achieved by using as a printing composition a mixture of an ink and a solution of a water-permeable polymer, then forming the gel over the imprinted indicia.
REFERENCES:
patent: 4415428 (1983-11-01), Nochumson et al.
patent: 5569369 (1996-10-01), Leffler et al.
patent: 6521111 (2003-02-01), Amshey et al.
Gueffroy Donald E.
Panattoni Cory M.
Provost Roger S.
Barton Jeffrey T.
Bio-Rad Laboratories, Inc.
Nguyen Nam
Townsend and Townsend / and Crew LLP
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