Patents by Inventor Akira Nagashima

Akira Nagashima 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: 7144449
    Abstract: The present invention provides a fluorescence ink having a high fluorescence intensity, and an ink jet recording method using the same. The ink contains a first fluorescent coloring material that emits fluorescence at a predetermined fluorescence wavelength to be used for measurement or determination with excitation at a predetermined excitation wavelength, a second fluorescent coloring material that emits fluorescence on excitation at the predetermined excitation wavelength, where the excitation spectrum of the first coloring material in the ink to obtain the fluorescence at the predetermined emission wavelength has a peak wavelength range next to the predetermined fluorescence wavelength, and the emission fluorescence spectrum of the second coloring material has an emission wavelength region substantially including at least the above peak wavelength range.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: December 5, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masako Udagawa, Sadayuki Sugama, Shoji Koike, Makoto Aoki, Akira Nagashima, Shinichi Hakamada
  • Patent number: 7144105
    Abstract: Disclosed herein is an ink including (i) first and second organic compounds which are incompatible with each other; (ii) at least one of a compound exhibiting fluorescence properties and a coloring material exhibiting fluorescence properties; and (iii) a liquid medium dissolving or dispersing the components (i) and (ii) therein.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: December 5, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Nagashima, Shinichi Hakamada
  • Patent number: 7141105
    Abstract: The present invention relates to a water-based fluorescent ink for the purpose of measurement or judgment of the fluorescence emission in a visible light region by an excitation wavelength in a predetermined ultraviolet range, containing water, a coloring material dissolved or dispersed in water, and an organic solvent, having a plurality of fluorescent groups in the coloring material structure of the coloring material, and using a water-soluble coloring material having a sulfonic acid group as the water-soluble group in the state of a free acid, capable of improving the water resistance and the light resistance, dramatically increasing the content of the fluorescent coloring material in the ink, which has conventionally been included only by a small amount in the ink due to the concentration quenching problem, obtaining preferable fluorescence emission and water resistance of the recorded image, and providing preferable adhesion resistance to the recording medium of the coloring material and reliability.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: November 28, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masako Udagawa, Shoji Koike, Makoto Aoki, Akira Nagashima, Shinichi Hakamada
  • Patent number: 7125901
    Abstract: A compound of the formula (I): R1—NH—X—Y-Z (I) wherein each symbol is as defined in the specification, or a pharmaceutically acceptable salt thereof useful as a vascular adhesion protein-1 (VAP-1) inhibitor, a pharmaceutical composition, a method for preventing or treating a VAP-1 associated disease, especially macular edema, which method includes administering an effective amount of the compound or a pharmaceutically acceptable salt thereof to a mammal, and the like.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: October 24, 2006
    Assignee: Astellas Pharma Inc.
    Inventors: Takayuki Inoue, Takashi Tojo, Masataka Morita, Mitsuru Ohkubo, Kousei Yoshihara, Akira Nagashima
  • Patent number: 7125111
    Abstract: Provided are an ink for ink jet recording and an ink jet recording method. The ink for ink jet recording includes an aqueous liquid medium, water-dispersible coloring material, and hardly water-soluble dye having no azo group, the ink jet recording being carried out by ejecting the ink by applying thermal energy thereto, whereby high durability can be achieved.
    Type: Grant
    Filed: October 21, 2004
    Date of Patent: October 24, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masako Udagawa, Akira Nagashima
  • Publication number: 20060234018
    Abstract: A fluorescent recorded image and an image forming method capable of achieving the compatibility between fluorescence intensity and recorded matter density are provided. The image is composed of multiple layers formed from fluorescent ink, or preferably fluorescent ink containing a surfactant. The method includes superimposing the fluorescent ink to form the fluorescent image.
    Type: Application
    Filed: April 26, 2006
    Publication date: October 19, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Akira Nagashima, Masako Udagawa, Sadayuki Sugama
  • Publication number: 20060229346
    Abstract: The present invention provides a method for treating a vascular hyperpermeable disease (except macular edema), which method comprises administering to a patient in need thereof a vascular adhesion protein-1 (VAP-1) inhibitor in an amount sufficient to treat said patient for said disease. The agents are 2-acylamino thiazole compounds.
    Type: Application
    Filed: March 31, 2004
    Publication date: October 12, 2006
    Applicants: Sucampo AG, Astellas Pharma Inc.
    Inventors: Ryuji Ueno, Akira Nagashima, Takayuki Inoue, Mitsuru Ohkubo, Kousci Yoshihara
  • Publication number: 20060194897
    Abstract: There are provided a novel pigment dispersion that can be suitably used as a coloring material for inks, especially inks for ink-jet recording, comprising a colored pigment in primary particles dispersed stably in a liquid medium, and a process for producing the pigment dispersion. A pigment dispersion comprising a colored pigment that is substantially of a primary particle maintaining type and is dispersed in a liquid medium, a process for producing the pigment dispersion, and an ink and recorded image using the pigment dispersion.
    Type: Application
    Filed: March 6, 2006
    Publication date: August 31, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Minako Kawabe, Akira Nagashima, Takayuki Ishikawa, Sadayuki Sugama
  • Publication number: 20060194056
    Abstract: An object of the present invention is to provide coated fine particles with a uniform particle size, having stable crystals on the surface, and to provide colored fine particles which exhibit good color development. A recorded image formed by a dispersion and an ink, using the coated fine particles, is provided with good color development and fastness. The present invention provides coated fine particles comprising fine particles as cores, the fine particles having a crystal layer on the surface, respectively.
    Type: Application
    Filed: March 6, 2006
    Publication date: August 31, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Akira Nagashima, Minako Kawabe, Takayuki Ishikawa, Sadayuki Sugama
  • Publication number: 20060152570
    Abstract: There is provided a method for producing pigment crystals with sufficiently high purity and sufficiently controlled crystal type, particle size, and aggregation property and dispersibility to obtain a pigment crystal that can be suitably used in both a solid phase and a liquid phase. The method for producing pigment crystals (S3) from a pigment precursor (S0) using retro Diels-Alder reaction, the method comprising producing the pigment crystals (S3) from the pigment precursor (S0) through a first displacement structure (S1) and a second displacement structure (S2), which differ from the pigment precursor (S0) and the pigment crystals (S3) and also differ from at least from each other.
    Type: Application
    Filed: March 6, 2006
    Publication date: July 13, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Takayuki Ishikawa, Akira Nagashima, Minako Kawabe, Sadayuki Sugama
  • Publication number: 20060128770
    Abstract: A compound of the formula (I): R1—NH—X—Y-Z (I) wherein each symbol is as defined in the specification, or a pharmaceutically acceptable salt thereof useful as a vascular adhesion protein-1 (VAP-1) inhibitor, a pharmaceutical composition, a method for preventing or treating a VAP-1 associated disease, especially macular edema, which method includes administering an effective amount of the compound or a pharmaceutically acceptable salt thereof to a mammal, and the like.
    Type: Application
    Filed: February 2, 2006
    Publication date: June 15, 2006
    Applicant: Fujisawa Pharmaceutical Co. Ltd.
    Inventors: Takayuki Inoue, Takashi Tojo, Masataka Morita, Mitsuru Ohkubo, Kousei Yoshihara, Akira Nagashima
  • Publication number: 20060128022
    Abstract: A process control system has a data storage section which saves process data output from a sensor placed in a plant which performs a continuous process, a trace information processing section which acquires process information of a product moving in the plant and being discrete in a predetermined unit from the process data saved in the data storage section, a state estimation section which estimates a property of the discrete product based on the acquired process information, and a control section which controls a control apparatus placed in the plant so that an estimation value is closed to an objective value.
    Type: Application
    Filed: December 12, 2005
    Publication date: June 15, 2006
    Applicant: Yokogawa Electric Corporation
    Inventors: Akira Nagashima, Tetsuya Ohtani, Makoto Nakaya, Gentaro Fukano
  • Patent number: 7060123
    Abstract: A novel fluorescent ink is provided which contains at least a coloring material and an aqueous liquid medium for dissolving the coloring material, wherein the coloring material comprises C.I. Acid Red 52 and at least one direct dye, the content of the C.I. Acid Red 52 ranging from 0.1 to 0.4% by weight based on the total amount of the ink, and the content of the direct dye ranging from 0.15 to 0.4% by weight based on the total amount of the ink, and the weight ratio of the direct dye to the C.I. Acid Red 52 is not higher than 1.6. This fluorescent ink is capable of forming prints with fluorescence of high intensity and with high water resistance.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: June 13, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Hakamada, Shoji Koike, Akira Nagashima
  • Publication number: 20060068321
    Abstract: The present invention provides a planographic printing plate precursor including a support and a positive recording layer formed on the support and containing: (A) a polymer having a structural unit represented by the following general formula (1), (B) a photo-thermal converting agent, and (C) an amino compound having a methylol group or an alkoxymethyl group; and a positive recording layer whose solubility in an alkaline developer is improved by exposure to light or by heating. In general formula (1), R1 represents an alkyl group or a cyclic group, x represents 0 or 1, and A represents a bivalent bonding group. According to the invention, a positive planographic printing plate precursor for use with infrared lasers having excellent chemical resistance and wide image development latitude can be obtained.
    Type: Application
    Filed: September 22, 2005
    Publication date: March 30, 2006
    Inventor: Akira Nagashima
  • Publication number: 20060062573
    Abstract: The present invention makes improvements in a mobile communication system that performs a communication via a communication network provided in a mobile body to execute a data transfer. The present system comprises a plurality of nodes, a path control device which receives data from the nodes respectively, selects a path for the data transfer on the communication network, and outputs the data, first optical fibers which connect each of the nodes and the path control device and transfer the data, and second optical fibers provided in parallel with the first optical fibers. In the present system, the path control device communicates with the node via the second optical fiber when a failure occurs in the first optical fiber.
    Type: Application
    Filed: September 6, 2005
    Publication date: March 23, 2006
    Inventors: Isao Uchida, Akira Nagashima, Akira Miura, Chie Sato
  • Publication number: 20060053362
    Abstract: In a forward error correction method and a forward error correction addition apparatus, error correction is performed on the basis of data, to which forward error correction code is added, transmitted through a network to output decoded data. The data transmitted through the network includes information bits represented by an information bit matrix with n rows and m columns (n, m are natural numbers), and redundancy bits represented by an odd number of redundancy information bit rows and an odd number of redundancy information bit columns based on the information bit matrix, which are provided in the row direction and in the column direction of the information bit matrix respectively. The redundancy bits are the forward error correction code.
    Type: Application
    Filed: September 6, 2005
    Publication date: March 9, 2006
    Inventors: Isao Uchida, Akira Nagashima, Akira Miura, Chie Sato
  • Publication number: 20060021545
    Abstract: An aqueous ink containing at least a water-dispersible coloring material and a water-soluble crystalline component, characterized in that the water-dispersible coloring material forms an aggregate around a crystal of the crystalline component formed as the content of the aqueous ink decreases, which ink may further contain a water-soluble coloring material.
    Type: Application
    Filed: August 1, 2005
    Publication date: February 2, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Akira Nagashima, Masako Udagawa
  • Publication number: 20060012657
    Abstract: The invention is to provide an aqueous ink, a recorded image and a recording method capable of improving an image fastness and a color-developing property of a recorded image, and is featured in that components of the aqueous ink are so prepared as to realize, at least on a surface portion of a recording medium, a fixed state of an ink droplet in which a contour portion of a second coloring material is formed around a central portion in which a first coloring material is fixed.
    Type: Application
    Filed: September 26, 2005
    Publication date: January 19, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Akira Nagashima, Sadayuki Sugama, Masako Udagawa
  • Publication number: 20050227050
    Abstract: To provide an image or the like which can easily record a large amount of information without the lamination of a large number of colorant layers, and which hardly allows forgery, alteration, or the like. Provided is an image formed by overlapping multiple ink layers, in which a first ink layer is formed on a recording material by means of a first ink having fluorescent emission property, a second ink layer is formed on the first ink layer by means of a second ink, and the first ink layer is exposed in a dotted manner on the second ink layer.
    Type: Application
    Filed: June 6, 2005
    Publication date: October 13, 2005
    Applicant: Canon Kabushiki Kaisha
    Inventors: Akira Nagashima, Masami Ikeda, Sadayuki Sugama
  • Publication number: 20050214678
    Abstract: A light-sensitive lithographic printing plate comprises a hydrophilic substrate provided thereon with an infrared light-sensitive layer which comprises (A) an acetal polymer having a specific structure; (B) a polymeric compound carrying, on the side chains, fluorinated aliphatic groups in which the fluorinated aliphatic groups are those derived from fluorinated aliphatic compounds prepared by the telomerization or oligomerization; and (C) a light-heat conversion substance. The light-sensitive lithographic printing plate is excellent in the both printing durability and the developing latitude.
    Type: Application
    Filed: March 25, 2005
    Publication date: September 29, 2005
    Inventor: Akira Nagashima