Patents by Inventor Kazuhiro Aikawa

Kazuhiro Aikawa 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).

  • Patent number: 5387600
    Abstract: Disclosed are an antihyperlipidemia or antiarteriosclerosis agent comprising a certain benzimidazole or 2,2'-methylenebisphenol derivative such as 5-dodecanoylamino-2-mercaptobenzimidazole or 2,2'-isobutylidenebis(4,6-dimethyphenol).
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: February 7, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuhiro Aikawa, Kozo Aoki
  • Patent number: 5034308
    Abstract: A method for processing silver halide photosensitive materials comprising developing an exposed silver halide photosensitive material, fixing the developed photosensitive material and then washing it with a washing water, the washing water used in the water washing process being replenished in an amount of 2 to 50 times the volume of liquid carried over by the photosensitive material from a bath preceding the water washing bath per unit area thereof, the amount of calcium and magnesium compounds present in the water washing bath being reduced to not more than 5 mg/l, respectively, on the basis of elemental calcium and magnesium and the washing water containing at least one chelating agent having a stability constant of a chelate, which is formed between the chelating agent and calcium or magnesium, of at least 6 is herein disclosed.
    Type: Grant
    Filed: August 19, 1987
    Date of Patent: July 23, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Abe, Yoshihiro Fujita, Toshio Koshimizu, Kazuhiro Aikawa
  • Patent number: 4923790
    Abstract: A silver halide photographic material composed of a support having thereon at least one light-sensitive silver halide emulsion layer, wherein the material contains the combination of (i) at least one compound represented by formula (I) and (ii) and at least one compound represented by formulae (II) and/or (III): ##STR1## wherein R.sub.1 represents hydrogen, an alkyl group, an aryl group or an aralkyl group; X represents a halogen atom, a nitro group, a hydroxyl group, a cyano group, a lower alkyl group, a lower alkoxy group, --COR.sub.2, ##STR2## or --SO.sub.3 M; R.sub.2 represents hydrogen, --OM, a lower alkyl group, an aryl group, an aralkyl group, a lower alkoxy group, an aryloxy group, an aralkyloxy group or ##STR3## R.sub.3 and R.sub.4 each represents hydrogen, a lower alkyl group, an aryl group, an aralkyl group, --COR.sub.7 or --SO.sub.2 R.sub.7 ; R.sub.5 and R.sub.6 each represents hydrogen, a lower alkyl group, an aryl group or an aralkyl group; R.sub.
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: May 8, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hirohiko Kato, Keiji Mihayashi, Kazuhiro Aikawa