Patents by Inventor Akihisa Nakajima

Akihisa Nakajima 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: 7010302
    Abstract: An address structure in mobile communications network facilitating routing of a packet. At the initial position of the address, is located a prefix or the like indicating the type of the address structure, which indicates the present mobile communications network system, for example. At the next position, a location address (LA) is located characterizing the present invention. The location address is usually placed at the position of a subnetwork address. The location address (LA) is provided for each mobile switching system, and constitutes part of an IP address of a user using a mobile station under the control of the mobile switching system. At the final position, is located a user identifier (user ID) which is used for identifying a user, and is provided uniquely for each user.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: March 7, 2006
    Assignee: NTT DoCoMo, Inc.
    Inventors: Akihisa Nakajima, Hiroshi Nakamura, Teruki Niwa, Yukichi Saito, Tomoyuki Ohtani, Hideo Morita
  • Publication number: 20060018828
    Abstract: A method of pereparing a rediographic contrast medium containing liposomes is disclosed, comprising (a) dissolving a phospholipid and a sterol in a supercritical or subcritical carbon dioxide in the presence of a compound containing a hydroxyl group or a polyalkyleneoxide group, (b) adding thereto an aqueous solution containing an iodine compound to form micelles and (c) discharging the carbon dioxide to form liposomal vesicles enclosing the iodine compound.
    Type: Application
    Filed: July 13, 2005
    Publication date: January 26, 2006
    Inventors: Eiichi Ueda, Akihisa Nakajima, Chiaki Nagaike, Yasuyuki Motokui
  • Publication number: 20050272144
    Abstract: A micro-reactor is provided with a flow jointing section to joint flows of at least two kinds of liquids including a reacting reagent by feeding the two kinds of liquids with a micro pump; a mixing flow path connected to a downstream end of the flow jointing section so as to diffuse and mix the liquids; and a reaction advancing section to advance the reaction among the mixed liquids.
    Type: Application
    Filed: June 2, 2005
    Publication date: December 8, 2005
    Applicant: KONICA MINOLTA MEDICAL & GRAPHIC, INC.
    Inventors: Yasuhiro Sando, Eiichi Ueda, Akihisa Nakajima, Kusunoki Higashino, Nobuhisa Ishida
  • Publication number: 20050250200
    Abstract: A micro-reactor for analyzing a sample, comprises (1) a plate-shaped chip; (2) a plurality of regent storage sections each having a chamber to store respective agents; (3) a regent mixing section to mix plural regents fed from the plurality of regent storage sections so as to produce a mixed reagent; (4) a sample receiving section having an injection port through which a sample is injected from outside; and (5) a reacting section to mix and react the mixed regent fed from the reagent mixing section and the sample fed from the sample receiving section. The plurality of regent storage sections, the regent mixing section, the sample receiving section and the reacting section are incorporated in the chip and are connected through flow paths, and the regent mixing section includes a feed-out preventing mechanism to prevent an initially-mixed regent from being fed out to the reacting section.
    Type: Application
    Filed: May 4, 2005
    Publication date: November 10, 2005
    Inventors: Akihisa Nakajima, Eiichi Ueda, Kusunoki Higashino, Yasuhiro Sando, Nobuhisa Ishida
  • Publication number: 20050170300
    Abstract: A photothermographic material is disclosed, comprising on a support a light-sensitive layer comprising a light-insensitive silver salt of an aliphatic carboxylic acid, light-sensitive silver halide grains, a reducing agent for silver ions and a binder, wherein the light-sensitive layer further comprises nonaqueous dispersion particles insoluble in organic solvents.
    Type: Application
    Filed: January 20, 2005
    Publication date: August 4, 2005
    Inventors: Takayuki Sasaki, Akihisa Nakajima, Kiyokazu Morita
  • Publication number: 20050136007
    Abstract: A near-infrared fluorescing contrast medium which exhibits superior imaging capability and is also difficult to accumulate in a living body, is disclosed, comprising a cyanine compound containing water-solubilizing groups and represented by the following formula. The imaging method by use thereof is also disclosed.
    Type: Application
    Filed: December 14, 2004
    Publication date: June 23, 2005
    Inventors: Nobuaki Kagawa, Takeshi Habu, Eiichi Ueda, Akihisa Nakajima
  • Publication number: 20050112625
    Abstract: A DNA amplification method is disclosed, comprising (a) denaturing a DNA to separate a double-stranded DNA into two single-stranded DNA, (b) hybridizing two types of oligonucleotides which were designed so that the end of the 3? side of the region of a sequence to be amplified is identified and hybridized with each single-stranded DNA that has been separated, (c) elongating the oligonucleotides with a DNA polymerase in the presence of deoxyribonycleotide triphosphate, and (d) repeating steps (a) through (c) to perform DNA amplification, wherein in step (b), the two types of oligonucleotides are oligonucleotides in which a polymer having a lower critical solution temperature is linked to the 5? end.
    Type: Application
    Filed: August 18, 2004
    Publication date: May 26, 2005
    Inventor: Akihisa Nakajima
  • Publication number: 20050084453
    Abstract: A radiographic contrast medium is disclosed, comprising a liposome which is comprised of vesicles including a water- and soluble nonionic iodine compound, and the contrast medium containing substantially no chlorinated solvent. There is also disclosed a method of preparing the radiographic contrast medium using supercritical or subcritical carbon dioxide.
    Type: Application
    Filed: April 13, 2004
    Publication date: April 21, 2005
    Applicant: Konica Minolta Medical & Graphic, Inc.
    Inventors: Eiichi Ueda, Satoshi Kawakatsu, Akihisa Nakajima, Chiaki Nagaike
  • Patent number: 6783230
    Abstract: An ink-jet recording medium including a support having thereon an ink receptive layer, wherein the support includes a white-colored substrate and a blue-colored substrate laminated with each other.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: August 31, 2004
    Assignee: Konica Corporation
    Inventors: Chiaki Nagaike, Eiichi Ueda, Yuji Hosoi, Akihisa Nakajima
  • Publication number: 20040063049
    Abstract: A silver salt photothermographic dry imaging material comprising a support having thereon a photosensitive layer and a polymer layer, wherein the polymer layer comprises a copolymer of: (i) a fluorine containing acrylate or a fluorine containing methacrylate; and (ii) a monomer having a hydrophobic group in the molecule.
    Type: Application
    Filed: September 9, 2003
    Publication date: April 1, 2004
    Applicant: Konica Corporation
    Inventors: Akihisa Nakajima, Eiichi Ueda, Shinji Kudo, Kenji Ohnuma, Chiaki Nagaike, Miyuki Teranishi
  • Patent number: 6671289
    Abstract: A short cell multiplexing is provided for chiefly transmitting data shorter than the payload of a standard ATM cell (basically the data of less than 48 bytes, but the data more than 48 bytes can be allowed). A standard ATM cell assembler 1 converts various forms of input information into short cells, places the short cells in standard ATM cells efficiently considering their information length, and output them to a B/ISDN network 7. The standard ATM cell disassembler 2 disassembles the standard ATM cells, which are assembled by the standard ATM cell assembler 1 and is input through the B-ISDN network 7, into short cells, converts the short cells into those with the original input information forms, and outputs them to channels. The configuration makes it possible for the short cell ATM cell multiplexing to improve channel efficiency with small delay, and matching to the standard ATM system.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: December 30, 2003
    Assignee: NTT Mobile Communications Network, Inc.
    Inventors: Motoshi Tamura, Takatoshi Okagawa, Hiroshi Nakamura, Akira Kaiyama, Masafumi Onuki, Akihisa Nakajima
  • Publication number: 20030231237
    Abstract: An ink-jet recording medium comprising a support having thereon an ink receptive layer, wherein the support comprises a white-colored substrate and a blue-colored substrate laminated with each other.
    Type: Application
    Filed: May 20, 2003
    Publication date: December 18, 2003
    Inventors: Chiaki Nagaike, Eiichi Ueda, Yuji Hosoi, Akihisa Nakajima
  • Patent number: 6641989
    Abstract: A silver salt photothermographic imaging material is disclosed, comprising a support provided thereon with a light sensitive layer containing an organic silver salt, a light sensitive silver halide, a reducing agent and a binder, wherein at least one side of the support is provided with a sublayer containing a metal oxide in an amount of 5 to 50% by volume and the surface of the sublayer exhibiting a maximum height (Ry) of not more than 0.1 &mgr;m.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: November 4, 2003
    Assignee: Konica Corporation
    Inventors: Takayuki Sasaki, Akihisa Nakajima, Tadashi Arimoto, Kenji Ohnuma, Yasuo Kurachi, Eiichi Ueda
  • Publication number: 20030118958
    Abstract: A silver salt photothermographic imaging material is disclosed, comprising a support provided thereon with a light sensitive layer containing an organic silver salt, a light sensitive silver halide, a reducing agent and a binder, wherein at least one side of the support is provided with a sublayer containing a metal oxide in an amount of 5 to 50% by volume and the surface of the sublayer exhibiting a maximum height (Ry) of not more than 0.1 &mgr;m.
    Type: Application
    Filed: July 3, 2002
    Publication date: June 26, 2003
    Applicant: KONICA CORPORATION
    Inventors: Takayuki Sasaki, Akihisa Nakajima, Tadashi Arimoto, Kenji Ohnuma, Yasuo Kurachi, Eiichi Ueda
  • Patent number: 6495225
    Abstract: Molding materials comprising a cellulose based fiber, and a thermoplastic resin in an amount of less than said cellulose based resin is disclosed.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: December 17, 2002
    Assignee: Konica Corporation
    Inventors: Akihisa Nakajima, Hiroshi Kibayashi, Yuji Hosoi, Yasuo Kurachi, Yuichi Atarashi
  • Patent number: 6475697
    Abstract: A photothermographic dry imaging material is disclosed. The imaging material comprises a support, a photosensitive layer containing at least an organic silver salt, photosensitive silver halide, reducing agent and a binder, and a subbing layer containing a water-soluble polymer having a hydroxy group, provided on the support.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: November 5, 2002
    Assignee: Konica Corporation
    Inventors: Tadashi Arimoto, Takayuki Sasaki, Yasuo Kurachi, Eiichi Ueda, Akihisa Nakajima
  • Publication number: 20020098451
    Abstract: A photothermographic material is disclosed, comprising a support having thereon at least an image forming layer and a first layer on the opposite side of the support from the image forming layer, wherein the first layer contains a vinyl type polymer latex and an aqueous-dispersible polymer selected from the group consisting of an aqueous-dispersible polyester, aqueous-dispersible polyurethane and aqueous-disperible cellulose.
    Type: Application
    Filed: September 6, 2001
    Publication date: July 25, 2002
    Inventors: Tadashi Arimoto, Takayuki Sasaki, Eiichi Ueda, Akihisa Nakajima, Chiaki Nagaike
  • Publication number: 20020057323
    Abstract: An ink jet recording material is disclosed. The material comprises a support and an ink absorptive layer wherein the ink jet recording material has continuous ratio of voids of from 20 to 100 percent.
    Type: Application
    Filed: June 25, 2001
    Publication date: May 16, 2002
    Inventors: Yasuo Kurachi, Eiichi Ueda, Takayuki Sasaki, Akihisa Nakajima
  • Publication number: 20010038981
    Abstract: A photothermographic dry imaging material is disclosed. The imaging material comprises a support, a photosensitive layer containing at least an organic silver salt, photosensitive silver halide, reducing agent and a binder, and a subbing layer containing a water-soluble polymer having a hydroxy group, provided on the support.
    Type: Application
    Filed: March 26, 2001
    Publication date: November 8, 2001
    Applicant: KONICA CORPORATION
    Inventors: Tadashi Arimoto, Takayuki Sasaki, Yasuo Kurachi, Eiichi Ueda, Akihisa Nakajima
  • Patent number: 6224988
    Abstract: An adhesive composition is disclosed, comprising an ethylenic copolymer comprising a repeating unit derived from an ethylenically unsaturated monomer containing an active methylene group and at least a repeating unit derived from an ethylenically unsaturated monomer, and a copolyester containing, as a copolymerizing component, a repeating unit derived from a dicarboxylic acid containing a sulfonate group or a repeating unit derived from a diol containing a sulfonate group.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: May 1, 2001
    Assignee: Konica Corporation
    Inventors: Eiichi Ueda, Akihisa Nakajima, Nobuo Kubo, Chiaki Nagaike, Yasuo Kurachi