Patents by Inventor Masaya Okamoto

Masaya Okamoto 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).

  • Publication number: 20040030044
    Abstract: The invention relates to a polycarbonate resin composition, including (1) a colored composition that comprises two types of specifically-terminated aromatic polycarbonates along with an inorganic filler added thereto, (2) a composition that comprises a polycarbonate resin terminated with a specific phenoxy group, a functional group-having silicone compound and a core/shell-type grafted rubber-like elastomer, and (3) a composition that comprises a specifically-terminated aromatic polycarbonate-polyorganosiloxane copolymer, a specifically-terminated aromatic polycarbonate and a fibril-forming polytetrafluoroethylene.
    Type: Application
    Filed: May 1, 2003
    Publication date: February 12, 2004
    Inventors: Masaya Okamoto, Akio Nodera, Yasuhiro Ishikawa
  • Patent number: 6620290
    Abstract: A plurality of microwave introduction windows are placed at the top wall of the reaction chamber. Microwaves of the same power are introduced into, e.g., two microwave introduction windows that are equivalent in location relationship with respect to the sidewall of the reaction chamber, while microwaves of different power are introduced into, e.g., two microwave introduction windows that are non-equivalent in location relationship with respect to the sidewall. Thus, a cost-effective plasma process apparatus is obtained which can realize uniform plasma processing even if the plasma being generated within the reaction chamber has varied load impedance.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: September 16, 2003
    Assignees: Sharp Kabushiki Kaisha
    Inventors: Tatsushi Yamamoto, Masaya Okamoto, Masaki Hirayama, Tadahiro Ohmi
  • Patent number: 6566488
    Abstract: Provided are a polyarylene sulfide having a chloroform soluble content of at most 0.5% by weight and having an inherent viscosity &eegr;inh of from 0.05 to 0.4; a polyarylene sulfide resin composition comprising a polyarylene sulfide and an inorganic filler, of which the chloroform soluble content is at most 0.5% by weight relative to the polyarylene sulfide in the composition; car parts produced through injection molding of the composition; and a method for producing a polyarylene sulfide. The polyarylene sulfide has a reduced content of low-molecular components, and has well balanced properties of fluidity, flexural strength and impact resistance.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: May 20, 2003
    Assignees: Idemitsu Kosan Co., Ltd., Idemitsu Petrochemical Co., Ltd., Petroleum Energy Center (PEC)
    Inventors: Masaya Okamoto, Toru Bando
  • Patent number: 6567634
    Abstract: An electro-photographic image forming apparatus forms an electrostatic latent image on a photosensitive belt and develops the electrostatic latent image with liquid toner composed of particle toners and a liquid solvent. With absorption means, whose surface is a liquid-solvent absorption layer, in pressure contact with the photosensitive belt, only the liquid solvent is recovered from the liquid toner image developed on the photosensitive belt. A dried toner image is transferred from the photosensitive belt to paper to fix the toner image thereon. The absorption means is heated by a heat source controlled by a temperature control method, which differs between the standby time and the print time, to vaporize the liquid solvent absorbed in the absorption layer. In addition, the electro-photographic image forming apparatus has means for moistening all part of the absorption means with the liquid solvent before the first image is written on the photosensitive belt.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: May 20, 2003
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Masaya Okamoto
  • Patent number: 6562900
    Abstract: Provided is a production process for polyarylene sulfide having a high molecular weight and an excellent heat stability. It is a production process for polyarylene sulfide by reacting a dihalogenoaromatic compound with metal sulfide in a polar solvent, wherein all or a part of water required for the reaction is added on a condition that the reaction system is 100° C. or higher, whereby obtained is polyarylene sulfide which is reduced in an intrinsic viscosity [&eegr;] by 0.05 deciliter/g or less at 206° C. when added to an N-methyl-2-pyrrolidone solvent is the polyarylene sulfide of an amount equivalent to the solvent and it is maintained at 265° C. for 8 hours.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: May 13, 2003
    Assignees: Petroleum Energy Center, Idemitsu Petrochemical Co., Ltd.
    Inventors: Masaya Okamoto, Minoru Senga, Toru Bando
  • Publication number: 20030027928
    Abstract: Provided are polycarbonate resin compositions as described in (i) to (iii) below.
    Type: Application
    Filed: December 10, 1999
    Publication date: February 6, 2003
    Inventors: MASAYA OKAMOTO, AKIO NODERA, MASAHIRO KITAYAMA
  • Publication number: 20030008965
    Abstract: A polycarbonate resin composition in which their flowability is improved without deteriorating their impact resistance is disclosed.
    Type: Application
    Filed: September 28, 2001
    Publication date: January 9, 2003
    Inventors: Masaya Okamoto, Tatsuya Tomioka
  • Patent number: 6489437
    Abstract: Provided is a polyarylene sulfide resin composition having well-balanced fluidity and mechanical strength. The composition is such that its spiral flow length, x (mm), to give a molding having a thickness of 1 mm and the flexural strength, y (MPa), of the molding satisfy the following numerical formula (I), and comprises (A) from 50 to 70 parts by weight of a polyarylene sulfide resin, (B) from 30 to 50 parts by weight of glass fibers and (C) from 0 to 3 parts by weight, relative to 100 parts by weight of the polyarylene sulfide resin (A), of a coupling agent. y≧−(3x/10)+340  (I) wherein x falls between 100 and 300.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: December 3, 2002
    Assignees: Idemitsu Kosan Co., Ltd., Idemitsu Petrochemical Co., Ltd., Petroleum Energy Center (PEC)
    Inventors: Masaya Okamoto, Toru Bando
  • Patent number: 6490424
    Abstract: A cleaning mechanism for an image forming apparatus has a cleaning roll that contacts an intermediate transfer body under pressure with a predetermined load and rotates with the intermediate transfer body for removing residual ink, toner or impurities on the intermediate transfer body after a transfer process. A sheet member is urged onto the cleaning roll for slip contact with a predetermined load.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: December 3, 2002
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Masaya Okamoto
  • Publication number: 20020161172
    Abstract: Provided are a polyarylene sulfide resin and its composition of which the moldings are burred little and which has good mechanical properties and good flow moldability. The composition comprises from 20 to 90% by weight of a polyarylene sulfide and from 10 to 80% by weight of an inorganic filler, and is characterized in that its burrs are on the level of at most 120 &mgr;m, that it has a weld strength of at least 50 MPa and that the length of its spiral flow having a thickness of 1 mm is at least 100 mm. Preferably, the polyarylene sulfide to be in the composition has a specific index to the degree of branching and a specific flexural strength.
    Type: Application
    Filed: March 8, 2002
    Publication date: October 31, 2002
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Masaya Okamoto, Minoru Senga, Koichi Suga, Kenji Seki
  • Publication number: 20020128372
    Abstract: Provided are a polyarylene sulfide having a chloroform soluble content of at most 0.5% by weight and having an inherent viscosity &eegr;inh of from 0.05 to 0.4; a polyarylene sulfide resin composition comprising a polyarylene sulfide and an inorganic filler, of which the chloroform soluble content is at most 0.5% by weight relative to the polyarylene sulfide in the composition; car parts produced through injection molding of the composition; and a method for producing a polyarylene sulfide. The polyarylene sulfide has a reduced content of low-molecular components, and has well balanced properties of fluidity, flexural strength and impact resistance.
    Type: Application
    Filed: March 15, 2002
    Publication date: September 12, 2002
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Masaya Okamoto, Toru Bando
  • Patent number: 6433851
    Abstract: The transmission type liquid crystal display device of this invention includes: gate lines; source lines; and switching elements each arranged near a crossing of each gate line and each source line, a gate electrode of each switching element being connected to the gate line, a source electrode of the switching element being connected to the source line, and a drain electrode of the switching element being connected to a pixel electrode for applying a voltage to a liquid crystal layer, wherein an interlayer insulating film formed of an, organic film with high transparency is provided above the switching element, the gate line, and the source line, and wherein the pixel electrode formed of a transparent conductive film is provided on the interlayer insulating film.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: August 13, 2002
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takayuki Shimada, Masaru Kajitani, Masaya Okamoto, Naofumi Kondo, Mikio Katayama, Yoshikazu Sakuhana, Akihiro Yamamoto, Yukinobu Nakata, Hirohiko Nishiki
  • Publication number: 20020079501
    Abstract: An active matrix substrate includes base substrate, gate lines, data lines, thin-film transistors and pixel electrodes. The gate lines are formed on the base substrate. The data lines are formed over the gate lines. Each of the data lines crosses all of the gate lines with an insulating film interposed therebetween. The thin-film transistors are formed over the base substrate. Each of the thin-film transistors is associated with one of the gate lines and operates responsive to a signal on the associated gate line. Each of the pixel electrodes is associated with one of the data lines and one of the thin-film transistors and is electrically connectable to the associated data line by way of the associated thin-film transistor. Each of the pixel electrodes and the associated thin-film transistor are connected together by way of a conductive member.
    Type: Application
    Filed: August 24, 2001
    Publication date: June 27, 2002
    Inventors: Yoshihiro Okada, Yuichi Saito, Shinya Yamakawa, Atsushi Ban, Masaya Okamoto, Hiroyuki Ohgami
  • Patent number: 6411348
    Abstract: An active matrix is furnished with an insulating substrate; a plurality of scanning lines and signal lines provided on the insulating substrate in a matrix pattern; pixel electrodes provided in areas enclosed by the scanning lines and signal lines, respectively; switching elements electrically connected to the scanning lines, signal lines, and pixel electrodes, respectively; a resistance control element for electrically connecting two lines selected arbitrary from the scanning lines and signal lines while controlling its own resistance value in response to a voltage applied thereto. According to the above arrangement, it has become possible to increase a margin of the active matrix substrate for the static electricity and improve the production yield without increasing the number of the producing steps.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: June 25, 2002
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Katsuhiro Kawai, Shinya Yamakawa, Masaya Okamoto, Takayuki Shimada, Mikio Katayama
  • Publication number: 20020062003
    Abstract: Provided is a polyarylene sulfide resin composition having well-balanced fluidity and mechanical strength. The composition is such that its spiral flow length, x (mm), to give a molding having a thickness of 1 mm and the flexural strength, y (MPa), of the molding satisfy the following numerical formula (I), and comprises (A) from 50 to 70 parts by weight of a polyarylene sulfide resin, (B) from 30 to 50 parts by weight of glass fibers and (C) from 0 to 3 parts by weight, relative to 100 parts by weight of the polyarylene sulfide resin (A), of a coupling agent.
    Type: Application
    Filed: July 8, 1999
    Publication date: May 23, 2002
    Inventors: MASAYA OKAMOTO, TORU B BANDO
  • Patent number: 6388003
    Abstract: Provided are a polyarylene sulfide having a chloroform soluble content of at most 0.5% by weight and having an inherent viscosity &eegr;inh of from 0.05 to 0.4; a polyarylene sulfide resin composition comprising a polyarylene sulfide and an inorganic filler, of which the chloroform soluble content is at most 0.5% by weight relative to the polyarylene sulfide in the composition; car parts produced through injection molding of the composition; and a method for producing a polyarylene sulfide. The polyarylene sulfide has a reduced content of low-molecular components, and has well balanced properties of fluidity, flexural strength and impact resistance.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: May 14, 2002
    Assignees: Idemitsu Kosan Co., Ltd., Idemitsu Petrochemical Co., Ltd., Petroleum Energy Center (PEC)
    Inventors: Masaya Okamoto, Toru Bando
  • Publication number: 20020026008
    Abstract: The polycarbonate resin composition of the present invention comprises (A) a copolyester carbonate having an aliphatic segment or a polycarbonate resin mixture containing the copolyester carbonate; (B) a functionalized silicone compound; and (C) a core-shell type rubber-like graft elastomer. Another polycarbonate resin composition of the present invention comprises a resin mixture comprising (A′) a copolyester carbonate having an aliphatic segment or a polycarbonate resin mixture containing the copolyester carbonate and (B′) a styrene resin; and (C′) a polyfluoroolefin resin. By the combined use of the copolyester carbonate having an aliphatic segment with the functionalized silicone compound and the core-shell type rubber-like graft elastomer, or with the styrene resin and the polyfluoroolefin resin, the moldability/extrudability, i.e.
    Type: Application
    Filed: June 27, 2001
    Publication date: February 28, 2002
    Applicant: Idemitsu Petrochemical Co., Ltd.
    Inventors: Masaya Okamoto, Masahiro Kitayama, Akio Nodera
  • Publication number: 20020022692
    Abstract: The polycarbonate resin composition of the present invention comprises (A) 100 parts by mass of an end-modified polycarbonate resin terminated with a (C10-C35 alkyl)phenoxy group or a polycarbonate resin mixture comprising the end-modified polycarbonate resin and another polycarbonate resin; (B) 0.1 to 10 parts by mass of a functionalized silicone compound; and (C) 0.2 to 10 parts by mass of a core-shell type rubber-like graft elastomer. Another polycarbonate resin composition of the present invention comprises a resin mixture comprising 100 parts by mass of a resin mixture comprising (A′) 1 to 99% by mass of an end-modified polycarbonate resin terminated with a (C10-C35 alkyl)phenoxy group or a polycarbonate mixture comprising the end-modified polycarbonate resin and another polycarbonate resin and (B′) 99 to 1% by mass of a styrene resin; and (C′) 0.01 to 5 parts by mass of a polyfluoroolefin resin.
    Type: Application
    Filed: June 27, 2001
    Publication date: February 21, 2002
    Applicant: Idemitsu Petrochemical Co., Ltd.
    Inventors: Masaya Okamoto, Masahiro Kitayama, Akio Nodera
  • Publication number: 20020019501
    Abstract: Provided is a production process for polyarylene sulfide having a high molecular weight and an excellent heat stability. It is a production process for polyarylene sulfide by reacting a dihalogenoaromatic compound with metal sulfide in a polar solvent, wherein all or a part of water required for the reaction is added on a condition that the reaction system is 100° C. or higher, whereby obtained is polyarylene sulfide which is reduced in an intrinsic viscosity [&eegr;] by 0.05 deciliter/g or less at 206° C. when added to an N-methyl-2-pyrrolidone solvent is the polyarylene sulfide of an amount equivalent to the solvent and it is maintained at 265° C. for 8 hours.
    Type: Application
    Filed: July 2, 2001
    Publication date: February 14, 2002
    Applicant: Petroleum Energy Center
    Inventors: Masaya Okamoto, Minoru Senga, Toru Bando
  • Publication number: 20010050058
    Abstract: A plurality of microwave introduction windows are placed at the top wall of the reaction chamber. Microwaves of the same power are introduced into, e.g., two microwave introduction windows that are equivalent in location relationship with respect to the sidewall of the reaction chamber, while microwaves of different power are introduced into, e.g., two microwave introduction windows that are non-equivalent in location relationship with respect to the sidewall. Thus, a cost-effective plasma process apparatus is obtained which can realize uniform plasma processing even if the plasma being generated within the reaction chamber has varied load impedance.
    Type: Application
    Filed: January 12, 2001
    Publication date: December 13, 2001
    Inventors: Tatsushi Yamamoto, Masaya Okamoto, Masaki Hirayama, Tadahiro Ohmi