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Class 204/166 - Vitamins


Subclass of Class 204 - Chemistry: electrical and wave energy
Definition: Processes directed to the production of vitamins.
No. of patents: 7
Last issue date: 08/13/2002


NumberTitleIssue Date
6432348Process for forming polyimide composite electro-deposited film
A process for forming a polyimide composite electro-deposited film, which excels in durability of ink repelling function, wear resistance or mold-releasing property, has the following steps. An electrically conductive film is formed on at lest one side of...
08/13/2002
5908539Method for reactions in dense-medium plasmas and products formed thereby
A method and apparatus for reacting dense-medium chemicals in an induced plasma state and novel reaction products resulting from the method are described....
06/01/1999
554563317-ene vitamine D analogues
The invention relates to vitamin D compounds of formula (I) ##STR1## in which X is hydrogen or hydroxy; R1 and R2 stand for hydrogen or a C1-6 hydrocarbyl radical which is optionally substituted with one or more deute...
08/13/1996
5376248Direct metallization process
A direct metallization process is disclosed wherein plastic substrates may be electrolytically plated without the need for any prior electroless plating. The process uses a specially formulated post-activator composition at an elevated temperature to trea...
12/27/1994
5034428Immobilized biomolecules and method of making same
A method of biomolecule immobilization is described in which the biomolecule itself or, alternatively, a monomer-conjugated biomolecule, is grafted with free monomer onto a hydrophilic, solid-phase, polymeric substrate which has been pre-irradiated with i...
07/23/1991
4829098Immobilized biomolecules and method of making same
A method of biomolecule immobilization is described in which the biomolecule itself or, alternatively, a monomer-conjugated biomolecule, is grafted with free monomer onto a hydrophilic, solid-phase, polymeric substrate which has been pre-irradiated with i...
05/09/1989
4011072Flotation of oxidized copper ores
Copper is recovered from an aqueous pulp of an ore containing both sulfide minerals and oxidized minerals by continuously monitoring the EMF of the pulp and adding a water-soluble sulfide to the pulp in an amount from 0.05 to 7 pounds of contained sulfur ...
03/08/1977
 
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