Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1998-12-23
2000-11-21
Le, Hoa Van
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430628, G03C 1047
Patent
active
06150081&
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.
REFERENCES:
patent: 5380642 (1995-01-01), Roberts et al.
patent: 5385819 (1995-01-01), Bowman et al.
patent: 5580712 (1996-12-01), Keevert, Jr. et al.
patent: 5670616 (1997-09-01), Weber et al.
patent: 5795707 (1998-08-01), Wagner et al.
Bouwstra Jan Bastiaan
De Wolf Frederik Anton
Mooibroek Andreas
Van Den Bosch Tanja Jacoba
Van Heerde George Valentino
Fuji Photo Film B.V.
Le Hoa Van
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