Patents by Inventor Masanori Suzuki

Masanori Suzuki 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).

  • Image-forming color toner, developing agent, image-forming apparatus, toner container, image-forming process cartridge and image-forming process
    Publication number: 20030165759
    Abstract: An image-forming color toner contains at least a colorant, a resin (A), a modified resin (B) and a wax (a) as a mold releasing agent, the image-forming color toner having a phase separated structure comprising the modified resin (B) as a domain in the resin (A) as a continuous phase, and wax (a) being effectively contained the modified resin (B). The modified resin (B) has a wax part containing a wax component (b), and a modified part formed of a vinyl monomer unit and an average ester group concentration of 8% by weight to 30% by weight.
    Type: Application
    Filed: December 27, 2002
    Publication date: September 4, 2003
    Applicant: RICOH COMPANY, LTD.
    Inventors: Masanori Suzuki, Yohichiroh Watanabe, Keiko Shiraishi, Toyoshi Sawada, Takuya Saito, Masashi Nagayama
  • Charge control agent, toner using same developer containing the toner and developing device containing the developer
    Publication number: 20030162018
    Abstract: A charge control agent containing a calcium salt of a sulfoisophthalic acid compound. A toner for developing an electrostatic latent image including the above charge control agent, a binder resin and a colorant.
    Type: Application
    Filed: December 9, 2002
    Publication date: August 28, 2003
    Inventors: Takuya Saito, Masanori Suzuki, Yohichiroh Watanabe, Keiko Shiraishi, Toyoshi Sawada, Tatsuhiko Osaki, Satoshi Aratani, Hiroki Ogiso
  • High-frequency signal transmission apparatus and electronic tuner using the same
    Publication number: 20030157906
    Abstract: An electronic tuner has an input terminal, a mixer receiving the signal fed into the input terminal, a matching circuit connected to an output of the mixer, a band-pass filter connected to an output of this matching circuit, an intermediate-frequency (IF) amplifier connected to an output of the band-pass filter, and an output terminal receiving output of the IF amplifier. These circuits are composed of balanced circuits and connected by balanced lines. The mixer has a high output impedance. For the matching circuit, the impedance of the matching circuit at the band-pass filter side is equal to the impedance of the band-pass filter at the matching circuit side. This structure can realize an electronic tuner having low power consumption.
    Type: Application
    Filed: January 17, 2003
    Publication date: August 21, 2003
    Inventors: Masanori Suzuki, Atsuhito Terao, Sanae Asayama
  • Genes encoding desulfurization enzymes
    Patent number: 6607903
    Abstract: This invention provides novel genes encoding enzymes which decompose difficult-to-decompose thiophene compounds. By using these genes, sulfur atoms can be released from the thiophene compounds in fossil fuel such as petroleum, and the diffusion of sulfur into the environment caused by the combustion of the fossil fuel can be prevented.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: August 19, 2003
    Assignee: Petroleum Energy Center
    Inventors: Yoshitaka Ishii, Jin Konishi, Kazuaki Hirasawa, Hideki Okada, Masanori Suzuki
  • Treatment for ischemic stroke
    Publication number: 20030144295
    Abstract: The present invention relates to a combination of [7-(1H-imidazol-1-yl)-6-nitro-2,3-dioxo-3,4-dihydroquinoxalin-1 (2H)-yl]acetic acid or a salt or hydrate thereof or, preferably, zonampanel together with a tissue plasminogen activator for the therapy of ischemic stroke or for the improvement of neurological symptom accompanied by cerebral infarction, to a method of administration thereof and to a method of therapy therefor. The combination of the present invention showed better effect of reducing the infarct volume than administration of a single component. Therefore, the combination of the present invention is useful as a therapy for ischemic stroke.
    Type: Application
    Filed: December 3, 2002
    Publication date: July 31, 2003
    Applicant: YAMANOUCHI PHARMACEUTICAL CO., LTD.
    Inventors: Masanori Suzuki, Masao Sasamata, Toshihisa Sumii, Eng H. Lo
  • Toner for developing electrostatic latent image, toner cartridge, image forming method, process cartridge and image forming apparatus
    Publication number: 20030129518
    Abstract: A toner for developing electrostatic latent images, including a colorant, a releasing agent and a binder resin, wherein the binder resin comprises a first, crystalline polyester resin, and a second, amorphous polyester resin having a softening point higher than that of the first polyester resin and being incompatible with the first polyester resin.
    Type: Application
    Filed: September 23, 2002
    Publication date: July 10, 2003
    Inventors: Toyoshi Sawada, Masanori Suzuki, Yohichiroh Watanabe, Keiko Shiraishi, Takuya Saito
  • Color toner, method for manufacturing the toner, and image forming apparatus and method using the toner
    Publication number: 20030096183
    Abstract: A color toner composition including at least toner particles including at least a binder resin; a colorant and a release agent dispersed in the binder resin; and a titania as an external additive, wherein the colorant has an average dispersion particle diameter not greater than 0.5 &mgr;m; the release agent and the binder resin are insoluble to each other; the toner particles satisfy the relationship: 0.05≦Dw/D4≦0.4, wherein Dw represents an average dispersion particle diameter of the release agent and D4 represents a weight-average particle diameter of the toner particles; and the titania has a segregation rate of from 0.5 to 5%.
    Type: Application
    Filed: February 22, 2002
    Publication date: May 22, 2003
    Inventors: Kohki Katoh, Masanori Suzuki, Yohichiro Watanabe, Masahide Yamashita, Akihiro Kotsugai, Toyoshi Sawada, Keiko Shiraishi
  • Toner for developing electrostatic latent image, toner container containing the toner, and image forming method and apparatus using the toner
    Patent number: 6566026
    Abstract: A toner including mother toner particles including at least two resins A and B and a wax each of which is incompatible with the others; and an external additive including at least one of a particulate inorganic material and a particulate resin, wherein the resins and wax form a sea-island structure in which the resin B is present like islands in a sea of the resin A and the wax is substantially included in the resin B while dispersed therein, and wherein the resin A does not include a component insoluble in tetrahydrofuran and has a weight average molecular weight of from 10,000 to 90,000.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: May 20, 2003
    Assignee: Ricoh Company,. Ltd.
    Inventors: Yohichiroh Watanabe, Masanori Suzuki, Masahide Yamashita, Keiko Shiraishi, Kazuhito Watanabe, Kohki Katoh, Toyoshi Sawada, Takuya Saito
  • Electrophotographic image forming apparatus
    Publication number: 20030086722
    Abstract: An image forming apparatus of the present invention includes a casing, an image forming unit, and an air conditioning device. The image forming unit includes a case accommodating at least a photoconductive element therein and formed with an opening for image transfer via which the photoconductive element is partly exposed to the outside. The opening is the only opening that might allow substances harmful to image formation into the case when the image forming unit is mounted to the casing. The air conditioning device removes the harmful substances flowing into the image forming unit from the outside.
    Type: Application
    Filed: October 11, 2002
    Publication date: May 8, 2003
    Inventors: Yasushi Nakazato, Yusuke Takeda, Tsukuru Kai, Satoshi Muramatsu, Masanori Suzuki, Yasuo Suzuki, Kazuyuki Shimada
  • Charge control agent and toner using same
    Publication number: 20030077534
    Abstract: A charge control agent containing a barium salt of a sulfoisophthalic acid compound and optionally a metal salt of a salicylic acid compound. A toner for developing an electrostatic latent image comprising such a charge control agent, a binder resin and a colorant.
    Type: Application
    Filed: June 7, 2002
    Publication date: April 24, 2003
    Inventors: Keiko Shiraishi, Masanori Suzuki, Yohichiroh Watanabe, Toyoshi Sawada, Takuya Saito, Tatsuhiko Osaki, Satoshi Aratani, Hiroki Ogiso
  • Two-component developer, container filled with the two-component developer, and image formation apparatus
    Patent number: 6544704
    Abstract: A two-component developer comprises a toner which contains at least a resin and a colorant and to which an external additive is added, and a carrier. The toner has a number average molecular weight (Mn) not greater than 3,000 and contains particles having a molecular weight not greater than 1,000 in an amount not less than 40 number %. The carrier satisfies the relation 3,000,000≦&sgr;1000×Dc3≦20,000,00  (1) where &sgr;1000 represents a magnetization (emu/g) of the carrier at 1,000 oersted, and Dc represents a volume average particle diameter (&mgr;m) of the carrier.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: April 8, 2003
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroaki Matsuda, Masanori Suzuki, Akemi Sugiyama, Hiroto Higuchi, Tsunemi Sugiyama, Fumihiro Sasaki, Yasuaki Iwamoto, Hiroshi Nakai, Kumi Hasegawa
  • ELECTROPHOTOGRAPHIC IMAGE FORMATION METHOD, CARRIER FOR TWO-COMPONENT DEVELOPER, TWO-COMPONENT DEVELOPER, CONTAINER HOLDING THEREIN THE TWO-COMPONENT DEVELOPER, AND ELECTROPHOTOGRAPHIC IMAGE FORMATION APPARATUS
    Patent number: 6534232
    Abstract: An electrophotographic image formation method for developing a latent electrostatic image formed on a latent image bearing member with toner to a toner image, using a two-component developer including a carrier and a toner. The zoner is held on a developer bearing member, with a gap between the facing surfaces of the latent image bearing member and the developer bearing member being set in a range of 0.1 mm to 0.5 mm. The carrier includes carrier particles, each carrier particle including a core material and a coating material which is coated on the surface of the core material The coating material includes a polysiloxane resin including at least an oxygen atom (O) and a silicon atom as constituent elements therefor, with an atomic ratio of the constituent elements, O/Si, being in a range of 2.1 to 4.0, and the carrier having a specific resistivity of 109 to 1016 &OHgr;·cm.
    Type: Grant
    Filed: May 10, 2000
    Date of Patent: March 18, 2003
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroaki Matsuda, Masanori Suzuki, Akemi Sugiyama, Hiroto Higuchi, Tsunemi Sugiyama
  • Toner for developing electrostatic latent image, developing method and developing apparatus
    Publication number: 20030039909
    Abstract: A toner, a developing method and apparatus is provided to satisfy both the low temperature fixation property and the hot offset property and that has a wide range of fixing temperature. The toner for an image formation comprises at least metal materials in a binding resin, wherein the toner is measured by a stand-alone type flow tester, and has a softening temperature of 65˜77.5° C., a flow beginning temperature of 100˜120° C., a melt temperature by a ½ method is 145˜195° C., and an average length of a short axis of a primary particle of the metal materials is 0.01-0.4 &mgr;m.
    Type: Application
    Filed: March 22, 2002
    Publication date: February 27, 2003
    Inventors: Toyoshi Sawada, Masanori Suzuki, Kohki Katoh, Yohichiroh Watanabe, Keiko Shiraishi, Takuya Saito
  • Toner for development of electrostatic latent images, method of forming images, image formation apparatus, toner container containing the toner therein, and image formation apparatus equipped with the toner container
    Publication number: 20030036010
    Abstract: A toner for developing a latent electrostatic image to a toner image, including a binder resin, and a magnetic material which is blackened by coating the surface of a magnetic powder with a coloring agent, the magnetic material being in an amount of 10 wt. % to 40 wt. % of the entire weight of the toner, a method of forming an image, using a two-component developer containing the toner, an image formation apparatus using the two-component developer, and a toner container containing therein the toner, and an image formation apparatus equipped with the toner container are proposed.
    Type: Application
    Filed: April 5, 2001
    Publication date: February 20, 2003
    Inventors: Masanori Suzuki, Yohichiroh Watanabe, Masahide Yamashita, Kazuhito Watanabe, Keiko Shiraishi, Kohki Katoh
  • Genes encoding desulfurization enzymes
    Publication number: 20030032100
    Abstract: This invention provides novel genes encoding enzymes which decompose difficult-to-decompose thiophene compounds. By using these genes, sulfur atoms can be released from the thiophene compounds in fossil fuel such as petroleum, and the diffusion of sulfur into the environment caused by the combustion of the fossil fuel can be prevented.
    Type: Application
    Filed: April 10, 2002
    Publication date: February 13, 2003
    Applicant: Petroleum Energy Center, a Japan corporation
    Inventors: Yoshitaka Ishii, Jin Konishi, Kazuaki Hirasawa, Hideki Okada, Masanori Suzuki
  • Method for welding a quartz glass tube for use as an optical fiber preform
    Patent number: 6484540
    Abstract: A method for welding a dummy tube to a quartz glass tube for use as an optical fiber preform, comprising chamfering the inner edge portion of the dummy tube and/or the quartz glass tube for use as the optical fiber preform before welding the quartz glass tube for use as the optical fiber preform with the dummy tube, and then melt welding them together.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: November 26, 2002
    Assignees: Heraeus Quarzglas GmbH & Co. KG, Shin-Etsu Quartz Products Co., Ltd.
    Inventors: Atsuhi Shimada, Toshiyuki Kato, Masanori Suzuki, Yutaka Watabe
  • Genes encoding desulfurization enzymes
    Patent number: 6479271
    Abstract: This invention provides novel genes encoding enzymes which decompose difficult-to-decompose thiophene compounds. By using these genes, sulfur atoms can be released from the thiophene compounds in fossil fuel such as petroleum, and the diffusion of sulfur into the environment caused by the combustion of the fossil fuel can be prevented.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: November 12, 2002
    Assignee: Petroleum Energy Center
    Inventors: Yoshitaka Ishii, Jin Konishi, Kazuaki Hirasawa, Hideki Okada, Masanori Suzuki
  • Receiver
    Publication number: 20020160739
    Abstract: A receiver is operable even if including a local oscillator generating a signal at high frequencies but not in a wide frequency range. The receiver includes: a first frequency converter for mixing a received signal with a first local oscillation signal to convert the received signal into respective signals of plural first intermediate frequencies corresponding to a frequency of the received signal; and a second frequency converter for converting the signals of the first intermediate frequencies into a signal of a second intermediate frequency.
    Type: Application
    Filed: March 28, 2002
    Publication date: October 31, 2002
    Inventors: Hiroaki Ozeki, Hitonobu Furukawa, Masanori Suzuki, Sanae Asayama, Masashi Yasuda
  • Two-component developer, container filled with the two-component developer, and image formation apparatus
    Patent number: 6468706
    Abstract: A two-component developer consists of a toner, which contains at least a resin and a colorant and to which an external additive is added, and a carrier. This two-component developer has the toner that has a number average molecular weight (Mn) of 3,000 or less and contains particles having a molecular weight of 1,000 or less at 40 number % or more, and also has the carrier that satisfies general formula (1) as follows: 3,000,000≦&sgr;1000×Dc3≦20,000,000  (1) where &sgr;1000 represents a magnetization (emu/g) of a carrier at 1,000 oersted, and Dc represents volume average particle diameter (&mgr;m) of the carrier.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: October 22, 2002
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroaki Matsuda, Masanori Suzuki, Akemi Sugiyama, Hiroto Higuchi, Tsunemi Sugiyama, Fumihiro Sasaki, Yasuaki Iwamoto, Hiroshi Nakai, Kumi Hasegawa
  • Toner for developing electrostatic latent image and image forming method using same
    Publication number: 20020136975
    Abstract: A toner for developing electrostatic latent images, including a matrix of a first resin selected from polyester resins, polyol resins and mixtures thereof, a plurality of domains of a second resin dispersed in the matrix and containing a wax. The amount of the wax is 2-15% by weight based on the weight of the toner The matrix is substantially free of domains of the second resin having a maximum diameter of greater than 2.0 &mgr;m. A part of the domains containing the wax having a maximum diameter of at least 0.2 &mgr;m constitutes a part of an outer surface of the toner.
    Type: Application
    Filed: November 27, 2001
    Publication date: September 26, 2002
    Inventors: Keiko Shiraishi, Masanori Suzuki, Yohichiroh Watanabe, Masahide Yamashita, Akihiro Kotsugai, Toyoshi Sawada, Kohki Katoh