Patents by Inventor Alexis Cornelus Van Rijn

Alexis Cornelus Van Rijn has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Silver halide emulsions with recombinant collagen suitable for photographic application and also the preparation thereof
    Patent number: 6150081
    Abstract: A tabular silver halide emulsion wherein the tabular grains account for more than 75% of the total grain projected area said emulsion comprising silver halide grains nucleated in the presence of nucleation peptizer and thereafter grown in the presence of growth peptizer, wherein at least one of the peptizers is substantially pure collagen like material prepared by genetic engineering, said peptizer having an amino acid sequence comprising more than 4 different amino acids. A process of preparing the AgX emulsion. A process of producing recombinant collagen like polypeptide comprising expression of a collagen like polypeptide encoding nucleic acid sequence by a microorganism to a degree exceeding 0.95 grammes/liter, said recombinant collagen being free of helix structure and preferably the expression occurring in a microorganism other than E. coli or Saccharomyces cerevisiae.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: November 21, 2000
    Assignee: Fuji Photo Film B.V.
    Inventors: George Valentino Van Heerde, Alexis Cornelus Van Rijn, Jan Bastiaan Bouwstra, Frederik Anton De Wolf, Andreas Mooibroek, Marc Willem Theodoor Werten, Richele Deodata Wind, Tanja Jacoba Van Den Bosch