Patents by Inventor Shoji Maruyama

Shoji Maruyama 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: 5362648
    Abstract: Sample numbers, which are encoded information about samples including a body fluid and contained in original containers, are affixed to the original containers. The test system memorizes the sample number including a rack number attached to each original container rack and coordinates of each original container in the original container rack. Then, it determines whether or not a sample in the original containers should be dispensed in each dispensing container set in the dispensing container rack using the pre-dispensing sample positional information including a rack number attached to each original container rack and coordinates of each original container in the original container rack, as a key.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: November 8, 1994
    Assignee: B.M.L., Inc.
    Inventors: Toshiyuki Koreyasu, Shoji Maruyama
  • Patent number: 5348705
    Abstract: Sample numbers, which are encoded information about samples including a body fluid and contained in original containers, are affixed to the original containers. The test system memorizes the sample number including a rack number attached to each original container rack and coordinates of each original container in the original container rack. Then, it determines whether or not a sample in the original containers should be dispensed in each dispensing container set in the dispensing container rack using the pre-dispensing sample positional information including a rack number attached to each original container rack and coordinates of each original container in the original container rack, as a key.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: September 20, 1994
    Assignee: B.M.L., Inc.
    Inventors: Toshiyuki Koreyasu, Shoji Maruyama
  • Patent number: 5306689
    Abstract: A reversible thermosensitive recording material is composed of a reversible thermosensitive recording layer capable of reversibly assuming a transparent state and a white opaque state depending on the temperature thereof, in which recording layer an organic low-molecular-weight material is dispersed in a matrix resin, the organic low-molecular-weight material being composed of a eutectic mixture containing as the main component a saturated higher fatty acid with 23 to 32 carbon atoms and a higher fatty acid.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: April 26, 1994
    Assignee: Ricoh Company, Ltd.
    Inventors: Shoji Maruyama, Keishi Kubo
  • Patent number: 5306687
    Abstract: A thermosensitive recording material composed of a support, and a thermosensitive recording layer formed on the support, containing a leuco dye, a color developer capable of inducing color formation in the leuco dye upon application of heat thereto, and a thermofusible material including p'-methylphenyl p-chlorobenzoate serving as a thermosensitivity-improving agent.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: April 26, 1994
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiromi Furuya, Keishi Taniguchi, Kunio Hayakawa, Masafumi Torii, Shoji Maruyama, Keishi Kubo
  • Patent number: 5298476
    Abstract: A rewritable bar code display medium is disclosed, which is composed of a support and a reversible thermosensitive recording layer for reversibly forming bar codes therein formed on the support, which reversible thermosensitive recording layer varies in transparency with change in temperature, and an image display method using the rewritable bar code display medium, and an apparatus for implementing the image display method are also disclosed.
    Type: Grant
    Filed: July 5, 1991
    Date of Patent: March 29, 1994
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshihiko Hotta, Keishi Kubo, Shoji Maruyama, Takashi Yano, Hajime Takayama
  • Patent number: 5296439
    Abstract: A reversible thermosensitive coloring composition is composed of (i) an electron-donor coloring compound and (ii) an electron-acceptor compound selected from the group consisting of an organic phosphoric acid compound, an aliphatic carboxylic acid, and a phenolic compound, each having a straight chain or branched chain alkyl group or alkenyl group having 12 or more carbon atoms, the electron-donor coloring compound and the electron-acceptor compound being capable of reacting to induce color formation in the reversible thermosensitive coloring composition at the eutectic temperature thereof. The electron-donor coloring compound and the electron-acceptor compound, when fused and colored in a mixed state, with application of heat thereto, followed by rapidly cooling the fused mixture, exhibit an exothermic peak in a temperature elevation process in a differential scanning calorific anlaysis or in a differential thermal analysis.
    Type: Grant
    Filed: December 24, 1991
    Date of Patent: March 22, 1994
    Assignee: Ricoh Company, Ltd.
    Inventors: Shoji Maruyama, Hiroshi Goto, Eiichi Kawamura, Masaru Shimada, Keishi Kubo, Kyoji Tsutsui, Hideaki Ema, Takehito Yamaguchi, Hiroki Kuboyama, Ichiro Sawamura, Keishi Taniguchi
  • Patent number: 5094038
    Abstract: A support device for facilitating the sharpening of a knife blade or the like is provided. The device is a solid block of rigid material having a flat lower surface to rest on a stable surface and an upper surface parallel to the lower surface. The upper surface has an elongated arcuate channel therein which extends the length of the block. Two spaced apart lips extend horizontally along the upper edges of the channel and extend slightly inwardly of the upper edges of the channel towards each other. A knife having a width greater than the width of the channel is inserted into the channel with its cutting edge extending out of the channel for sharpening, its non-cutting edge abutting against one of the lips, and the side if the knife abutting against the other lip. Thus the knife is held at the proper angle for sharpening with a stone.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: March 10, 1992
    Inventor: Shoji Maruyama
  • Patent number: 5028467
    Abstract: A dithiolate metal complex compound having formula [I] ##STR1## wherein each R individually represents an alkyl group having 1 to 6 carbon atoms, a halogen, a halogenated alkyl group having 1 to 6 carbon atoms, an amino group which may be substituted with 1 or 2 alkyl groups each having independently 1 to 4 carbon atoms, or a trifluoromethyl group, M represents a transition metal selected from the group consisting of Ni, Pd, Pt, Co, Cu and Mn, n is an integer of 0 to 4, and A represents the counter cation of the complex compound, a method of producing the same, and an optical information recording medium comprising a recording layer comprising a polymethine dye and the dithiolate metal complex compound are disclosed.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: July 2, 1991
    Assignee: Ricoh Company, Ltd.
    Inventors: Shoji Maruyama, Tsutomu Satoh, Kazukiyo Nagai
  • Patent number: 4250240
    Abstract: The present invention relates to a photosensitive material for use in electrophotography comprising a photoconductive layer on which there is a transparent protective layer consisting essentially of a substance resulting from partial hydrolysis of a mixture of (a) a compound having the following general formula I, (b) a copolymer of a compound having the general formula II with a compound having the general formula III or maleic anhydride and (c) a compound having the general formula IV,(1) General formula I(R.sup.1).sub.l Si(OR.sup.2).sub.m[wherein R.sup.1 is a C.sub.1-4 alkyl radical, vinyl radical, .gamma.-methacryloxypropyl radical, phenyl radical, .gamma.-glycidoxypropyl radical, .gamma.-chloropropyl radical, .gamma.-mercaptopropyl radical, .gamma.-.beta.(aminoethyl).gamma.-aminopropyl radical or .gamma.-aminopropyl radical; R.sup.2 is a hydroxyethylalkyl ether radical or C.sub.1-4 alkyl radical; l is 0-2; and m is 2-4.](2) General formula II ##STR1## [wherein R.sup.3 is hydrogen or a methyl radical; R.
    Type: Grant
    Filed: June 19, 1979
    Date of Patent: February 10, 1981
    Assignee: Ricoh Company, Ltd.
    Inventors: Masaru Shimada, Shoji Maruyama, Hiroshi Tamura
  • Patent number: 3984378
    Abstract: Photoconductive, film forming nitropyrene-formaldehyde resins characterized by a repeating structural unit of the formula: ##SPC1##And process for preparation, the photoconductive films themselves, and such films on an electrically conductive support.
    Type: Grant
    Filed: March 12, 1974
    Date of Patent: October 5, 1976
    Assignee: Kabushiki Kaisha Ricoh
    Inventors: Tomio Kubota, Shoji Maruyama, Takao Igawa
  • Patent number: 3953433
    Abstract: There are provided sensitizers for electrophotographic light-sensitive materials including organic photoconductors and electrophotographic light-sensitive materials containing same. The sensitizers are reaction products comprising benzopyrylium salt and benzopyran.
    Type: Grant
    Filed: January 3, 1974
    Date of Patent: April 27, 1976
    Assignee: Ricoh Co., Ltd.
    Inventors: Shoji Maruyama, Tomio Kubota, Katue Kojima, Hiroshi Tamura, Masahide Harada
  • Patent number: 3933492
    Abstract: Derivatives of polyglutamic acid with a molecular weight of from 1,000 to 100,000 and having the following general formula (I) are novel photoconductive substances which are superior in film forming ability and are suitable for use as photoconductors for electrophotographic copying materials:General formula (I) ##EQU1## wherein R represents a polynuclear aromatic or a heterocyclic nitrogen group, each containing up to sixteen carbon atoms, andn is the integer 1 or 2.
    Type: Grant
    Filed: July 5, 1973
    Date of Patent: January 20, 1976
    Assignee: Kabushiki Kaisha Ricoh
    Inventors: Shoji Maruyama, Takamichi Enomoto