Dextran Derivatives Patents (Class 536/51)
  • Vinylic group containing dextran derivative gel in particle form for separation purposes
    Patent number: 4094833
    Abstract: A dextran derivative gel in particle form for use in the separation of substances according to their molecular size and/or electrical charge by means of gel-chromatographic and/or ion exchange techniques is disclosed which gel comprises a copolymerizate obtained by the free-radical copolymerization of a dextran derivative containing vinyl and/or substituted vinyl groups with (a) a divinyl compound of the formula ##STR1## wherein R' and R" are equal or different and each represent hydrogen or methyl and X is ##STR2## --SO.sub.2 -- or the group ##STR3## wherein n is an integer from 1 to 6, inclusive, and optionally (b) a low-molecular weight monovinyl compound.
    Type: Grant
    Filed: November 29, 1976
    Date of Patent: June 13, 1978
    Assignee: Pharmacia Fine Chemicals AB
    Inventors: Haldor Ingemar Johansson, Dag Torsten Lindstrom, John Lennart Soderberg
  • Agarose containing affinity matrix materials
    Patent number: 4020268
    Abstract: A novel affinity matrix material for trypsin and trypsin-like enzymes is disclosed. Methods employing this material to isolate and/or purify crude extracts containing trypsin and trypsin-like enzymes and to store the purified enzymes obtained are also disclosed.
    Type: Grant
    Filed: November 21, 1974
    Date of Patent: April 26, 1977
    Assignee: Xerox Corporation
    Inventors: A. Hirotoshi Nishikawa, Harry F. Hixson, Jr.
  • Enzyme separation
    Patent number: 4012570
    Abstract: A reactive matrix comprises a co-enzyme chemically attached to a water insoluble organic polymeric support material. The reactive matrix may be used in a process for the separation of mixtures containing a plurality of enzymes.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: March 15, 1977
    Inventors: Peter Duncan Goodearl Dean, Christopher Robin Lowe
  • Enzyme separation
    Patent number: 4012571
    Abstract: A reactive matrix comprises a co-enzyme chemically attached to a water insoluble organic polymeric support material. The reactive matrix may be used in a process for the separation of mixtures containing a plurality of enzymes.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: March 15, 1977
    Inventors: Peter Duncan Goodearl Dean, Christopher Robin Lowe
  • Enzyme separation
    Patent number: 4012568
    Abstract: A reactive matrix comprises a co-enzyme chemically attached to a water insoluble organic polymeric support material. The reactive matrix may be used in a process for the separation of mixtures containing a plurality of enzymes.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: March 15, 1977
    Inventors: Peter Duncan Goodearl Dean, Christopher Robin Lowe
  • Enzyme separation
    Patent number: 4012569
    Abstract: A reactive matrix comprises a co-enzyme chemically attached to a water insoluble organic polymeric support material. The reactive matrix may be used in a process for the separation of mixtures containing a plurality of enzymes.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: March 15, 1977
    Inventors: Peter Duncan Goodearl Dean, Christopher Robin Lowe
  • Enzyme separation
    Patent number: 4012572
    Abstract: A reactive matrix comprises a co-enzyme chemically attached to a water insoluble organic polymeric support material. The reactive matrix may be used in a process for the separation of mixtures containing a plurality of enzymes.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: March 15, 1977
    Inventors: Peter Duncan Goodearl Dean, Christopher Robin Lowe
  • Enzyme separation
    Patent number: 4011377
    Abstract: A reactive matrix comprises a co-enzyme chemically attached to a water insoluble organic polymeric support material. The reactive matrix may be used in a process for the separation of mixtures containing a plurality of enzymes.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: March 8, 1977
    Inventors: Peter Duncan Goodearl Dean, Christopher Robin Lowe
  • Enzyme separation
    Patent number: 4011205
    Abstract: A reactive matrix comprises a co-enzyme chemically attached to a water insoluble organic polymeric support material. The reactive matrix may be used in a process for the separation of mixtures containing a plurality of enzymes.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: March 8, 1977
    Inventors: Peter Duncan Goodearl Dean, Christopher Robin Lowe
  • Colorings
    Patent number: 4000118
    Abstract: Nontoxic coloring compositions which comprise optically chromophoric groups attached via sulfonamido linkages to nondegradable chemical molecules having molecular dimensions which substantially prevent their absorption from the gastrointestinal tract are disclosed. The colorings find primary applications as food colors.
    Type: Grant
    Filed: February 11, 1975
    Date of Patent: December 28, 1976
    Inventors: Daniel J. Dawson, Josef Rudinger