Patents by Inventor Akihiko Okamoto
Akihiko 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).
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Patent number: 11964423Abstract: A method for manufacturing a three-dimensional shaped object according to the present disclosure includes: a plasticizing step of plasticizing at least a part of a shaping material including a first fiber material and a thermoplastic resin to generate a plasticized material to be discharged from a nozzle opening for shaping a three-dimensional shaped object; a fiber introducing step including either a step of introducing a second fiber material longer than the first fiber material into the shaping material or the plasticized material before being discharged from the nozzle opening, or a step of introducing the second fiber material into the plasticized material after being discharged from the nozzle opening; and a shaping step of shaping the three-dimensional shaped object including the first fiber material and the second fiber material.Type: GrantFiled: February 23, 2022Date of Patent: April 23, 2024Assignee: Seiko Epson CorporationInventors: Eiji Okamoto, Akihiko Tsunoya
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Patent number: 11951686Abstract: A method for manufacturing a three-dimensional shaped object includes: a plasticizing step of plasticizing at least a part of a shaping material containing a thermoplastic resin to generate a plasticized material; a fiber introducing step including at least one of a step of introducing a covered fiber material, which is a fiber material covered with a covering material, into the plasticized material after being discharged from the nozzle opening, and a step of introducing the covered fiber material into the shaping material or the plasticized material before being discharged from the nozzle opening; and a shaping step of shaping a three-dimensional shaped object including the covered fiber material.Type: GrantFiled: February 23, 2022Date of Patent: April 9, 2024Assignee: Seiko Epson CorporationInventors: Eiji Okamoto, Akihiko Tsunoya
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Publication number: 20210238718Abstract: The present invention relates to a precipitation-hardening martensitic stainless steel, containing: 0<C<0.10 mass %, 0<Si?0.20 mass %, 0<Mn?1.00 mass %, 8.0 mass %?Ni?15.0 mass %, 8.0 mass %?Cr?14.0 mass %, 0.4 mass %?Nb?2.50 mass %, and the balance being Fe and inevitable impurities.Type: ApplicationFiled: January 25, 2021Publication date: August 5, 2021Inventors: Nobuyuki TAKAHASHI, Akihiko OKAMOTO, Chihiro FURUSHO, Hiroyuki TAKABAYASHI, Yoshihiko KOYANAGI
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Patent number: 8479859Abstract: The motive power of a hybrid vehicle is the driving power of a gasoline engine, the electric power produced by a generator coupled to the engine, and the electric power obtained by conversion from kinetic energy into electric energy through a regeneration brake during deceleration. Also, an electric vehicle uses the electric power of a battery as its motive power by converting kinetic energy into electric energy through a regeneration brake during deceleration and storing the electric energy. However, the regenerated energy is little. While keeping intact the damping effect of shock absorbers conventionally mounted on the suspension of a vehicle, an oil pump function is added. The electric power produced by storing, in an accumulator, oil pressure-fed from the shock absorbers, driving a hydraulic motor under increased oil pressure, driving a generator coupled to the hydraulic motor is used as part of the motive power.Type: GrantFiled: March 9, 2011Date of Patent: July 9, 2013Inventor: Akihiko Okamoto
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Publication number: 20130153313Abstract: [Problem] The motive power of a hybrid vehicle is the driving power of a gasoline engine, the electric power produced by a generator coupled to the engine, and the electric power obtained by conversion from kinetic energy into electric energy through a regeneration brake during deceleration. Also, an electric vehicle uses the electric power of a battery as its motive power by converting kinetic energy into electric energy through a regeneration brake during deceleration and storing the electric energy. However, the regenerated energy is little. [Solution] While keeping intact the damping effect of shock absorbers conventionally mounted on the suspension of a vehicle, an oil pump function is added. The electric power produced by storing, in an accumulator, oil pressure-fed from the shock absorbers, driving a hydraulic motor under increased oil pressure, driving a generator coupled to the hydraulic motor is used as part of the motive power.Type: ApplicationFiled: March 9, 2011Publication date: June 20, 2013Inventor: Akihiko Okamoto
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Patent number: 7717517Abstract: A headrest for vehicles including a stationary plate secured to the seat back of a vehicle; an attachment shaft supported by the stationary plate; a coil spring wound on the attachment shaft and having a fixed end and a free end with its inner diameter being smaller than the outer diameter of the attachment shaft; and a headrest base plate attached to the stationary plate so as to turn forward and rearward. The fixed end of the coil spring is fixed to the base plate so as to secure the attachment shaft to the base plate or the fixed end of the coil is fixed to the stationary plate so as to secure the attachment shaft to the base plate, and the winding direction of the coil spring is set in a direction that tightens the spring when the base plate is turned rearward, thus restricting this rearward turning.Type: GrantFiled: April 24, 2008Date of Patent: May 18, 2010Assignee: Bizen Hatsujoh Co., Ltd.Inventors: Takeshi Yamane, Tokuzo Kobayashi, Akihiko Okamoto
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Publication number: 20090295212Abstract: An armrest apparatus including an arm, which is fitted to a drum provided on a seat side member, and a coil spring, which is provided on the drum, wherein one end of the spring is fixed to the arm-rest member and another end of the spring, a free end, is curved outwardly in the direction away from the center axis of the drum, and this coil spring is loosely wound around the drum so as to tighten when the arm-rest member is rotated downward, and further a coil end receiving surface that receives the curved part of the coil spring is provided in the drum. When the arm-rest member is rotated downward and reaches a predetermined set angle, the coil end receiving surface receives the curved part of the coil spring, so that the coil spring tightens the drum by a downward load applied to the arm, restricting the downward rotation of the arm.Type: ApplicationFiled: March 25, 2009Publication date: December 3, 2009Inventors: Takeshi Yamane, Tokuzo Kobayashi, Akihiko Okamoto, Kengo Tamura
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Patent number: 7578559Abstract: A headrest including a base material having a front base member and a rear base member, a turn restricting bracket installed the front and rear base members and having an abutting portion and a protruding step, a center shaft attached to the turn restricting bracket, and a latching panel installed between the front and rear base members with one end thereof hinged to the rear base member, the latching panel being pulled by a spring. The headrest has forward and rearward use limitation positions: at forward use limitation position, when the headrest turns forward and a latching surface formed in the latching panel catches on the protruding step, a further forward turning of the headrest is restricted; and at the rearward use limitation position, when the headrest turns rearward and the abutting portion strikes the front base member, further rearward turning of the headrest is restricted.Type: GrantFiled: July 17, 2008Date of Patent: August 25, 2009Assignee: Bizen Hatsujoh Co., Ltd.Inventors: Takeshi Yamane, Tokuzo Kobayashi, Akihiko Okamoto
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Publication number: 20090021068Abstract: A headrest including a base material having a front base member and a rear base member, a turn restricting bracket installed the front and rear base members and having an abutting portion and a protruding step, a center shaft attached to the turn restricting bracket, and a latching panel installed between the front and rear base members with one end thereof hinged to the rear base member, the latching panel being pulled by a spring. The headrest has forward and rearward use limitation positions: at forward use limitation position, when the headrest turns forward and a latching surface formed in the latching panel catches on the protruding step, a further forward turning of the headrest is restricted; and at the rearward use limitation position, when the headrest turns rearward and the abutting portion strikes the front base member, further rearward turning of the headrest is restricted.Type: ApplicationFiled: July 17, 2008Publication date: January 22, 2009Inventors: Takeshi Yamane, Tokuzo Kobayashi, Akihiko Okamoto
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Publication number: 20080277989Abstract: A headrest for vehicles including a stationary plate secured to the seat back of a vehicle; an attachment shaft supported by the stationary plate; a coil spring wound on the attachment shaft and having a fixed end and a free end with its inner diameter being smaller than the outer diameter of the attachment shaft; and a headrest base plate attached to the stationary plate so as to turn forward and rearward. The fixed end of the coil spring is fixed to the base plate so as to secure the attachment shaft to the base plate or the fixed end of the coil is fixed to the stationary plate so as to secure the attachment shaft to the base plate, and the winding direction of the coil spring is set in a direction that tightens the spring when the base plate is turned rearward, thus restricting this rearward turning.Type: ApplicationFiled: April 24, 2008Publication date: November 13, 2008Inventors: Takeshi Yamane, Tokuzo Kobayashi, Akihiko Okamoto
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Patent number: 7359578Abstract: Image data is transmitted from an image input apparatus to an information processing apparatus. Specific information (e.g., photographing information) that specifies the image data, and identification information (e.g., a disk name) that identifies an optical disk on which the image data is recorded, are added to the image data. Further, the specific information and the identification information are stored in a storage device. Subsequently, specific information that matches with an input keyword is searched from the specific information stored in the storage device. Then, the searched specific information and the identification information corresponding to the searched specific information are displayed in a list on a display. By performing a keyword adding process and an image searching process, the optical disk containing desired image data can be easily specified. Therefore, desired image data recorded on the optical disk can be easily searched.Type: GrantFiled: July 22, 2004Date of Patent: April 15, 2008Assignee: Ricoh Company, Ltd.Inventor: Akihiko Okamoto
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Patent number: 7161285Abstract: A fabrication method for an emitter includes the steps of forming on a glass substrate a CNT film which contains a plurality of carbon nanotubes (CNTs) and constitutes an emitter electrode, forming a gate electrode via an insulating film on the CNT film, forming a plurality of gate openings in the gate electrode and the insulating film, and aligning upright the CNTs in the gate opening. The upright alignment generates a stable uniform emission current and provides excellent emission characteristics.Type: GrantFiled: November 19, 2001Date of Patent: January 9, 2007Assignee: NEC CorporationInventors: Akihiko Okamoto, Kazuo Konuma, Yoshinori Tomihari, Fuminori Ito, Yuko Okada
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Publication number: 20050270928Abstract: An optical disc device is disclosed. The optical disc device includes a thermal head that is disposed at a side opposite to an optical pickup, which irradiates a laser beam for writing and erasing information, relative to a mounted optical disc, and is configured to bring a thermal head into contact with a label, which is made of a thermosensitive information display film attached on a label-side surface of the mounted optical disc, to write visible information on the label. The optical disc device also includes a low-speed rotation mechanism configured to rotate the optical disc at a low speed by a motor when the thermal head writes visible information on a label, in addition to a high-speed rotation mechanism, such as a spindle motor, configured to rotate the optical disc at high speed when the optical pickup records or reproduces the information.Type: ApplicationFiled: May 12, 2005Publication date: December 8, 2005Inventors: Hiroki Sugahara, Yasushi Okada, Katsuhiko Okabe, Akihiko Okamoto, Hiroshi Koide
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Patent number: 6967913Abstract: An optical disk recording method comprising steps of a) performing recording onto the optical disk with a ZCLV method by using zone parameter storage means for storing at least one zone division time and CLV of each zone in a track formed on the optical disk, as zone parameters, for each of a plurality of recording modes and optical disk type determination means for determining the type of the optical disk before recording; b) performing optimization of the recording velocity by detecting, before recording, servo signal fluctuation by accessing the optical disk, by determining maximum recording velocity defined by the speed of a rotational motor rotating the optical disk, and by calculating a changing point of the recording velocity; and c) limiting the speed of the rotational motor, when the servo signal fluctuation at the surface of the optical disk exceeds a reference level and determining the relation between the zone division time and the CLV of each zone.Type: GrantFiled: June 7, 2002Date of Patent: November 22, 2005Assignee: Ricoh Company, Ltd.Inventors: Akihiko Okamoto, Yoshiyuki Ishiyama
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Patent number: 6898797Abstract: An optical disc cartridge for storing an optical disc. The cover of the optical disc cartridge absorbs or filters ambient light which may damage information stored on the disc after prolonged exposure to the ambient light. Preferably, the disc cartridge cover allows some visible light to pass in order to allow a user to read label information on the disc. The color of the cover may be transparent to visible light, allow only specific visible wavelengths of light to pass, or be opaque, as long as the amount of ambient light reaching the disc stored within the disc cartridge is reduced. The disc cover may be made of a single layer or include a base layer with one or more thin films thereon.Type: GrantFiled: July 5, 1995Date of Patent: May 24, 2005Assignee: Ricoh Company, Ltd.Inventor: Akihiko Okamoto
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Patent number: 6877075Abstract: An information processor, wherein the information can be maintained without depending on the storage capacity of the memory portion and the searching for the information can be simplified. According to the information provided from outside and stored in the memory portion, the specific information for specifying this information is sorted and maintained. When the capacity not recorded yet in the memory portion is smaller than the basic information amount, a part of the information stored in the memory portion is stored on a portable information-recording medium and is erased from the memory portion. The identification information for identifying the information-recording medium recorded with the information is corresponded to and stored in the specific information corresponding to the information erased from the memory portion in the specific information that has been stored and maintained.Type: GrantFiled: December 4, 2002Date of Patent: April 5, 2005Assignee: Ricoh Company, Ltd.Inventor: Akihiko Okamoto
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Publication number: 20050030382Abstract: Image data is transmitted from an image input apparatus to an information processing apparatus. Specific information (e.g., photographing information) that specifies the image data, and identification information (e.g., a disk name) that identifies an optical disk on which the image data is recorded, are added to the image data. Further, the specific information and the identification information are stored in a storage device. Subsequently, specific information that matches with an input keyword is searched from the specific information stored in the storage device. Then, the searched specific information and the identification information corresponding to the searched specific information are displayed in a list on a display. By performing a keyword adding process and an image searching process, the optical disk containing desired image data can be easily specified. Therefore, desired image data recorded on the optical disk can be easily searched.Type: ApplicationFiled: July 22, 2004Publication date: February 10, 2005Inventor: Akihiko Okamoto
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Patent number: 6780075Abstract: A method of fabricating a nano-tube that enables shortly cutting off the nano-tube without deteriorating the same and that when the nano-tube is used as the emitter can provide an improved flat-ability of the surface of the emitter, a method of manufacturing a field-emission type cold cathode that can provide an improved flat-ability of the surface of the emitter and that resultantly can cause an emission of a uniform, stable high-emission electric current, and a method of manufacturing a display device that includes a method of fabricating a nano-tube and/or a method of manufacturing a field-emission type cold cathode. The method of fabricating a nano-tube according to the present invention includes the step of radiating ions into a nano-tube and the step of oxidizing the nano-tube.Type: GrantFiled: December 22, 2000Date of Patent: August 24, 2004Assignee: NEC CorporationInventors: Akihiko Okamoto, Fuminori Itoh
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Publication number: 20040104660Abstract: A fabrication method for an emitter includes the steps of forming on a glass substrate (10) a CNT film (12) which contains a plurality of carbon nanotubes (CNTs) (12a) and constitutes an emitter electrode (12b), forming a gate electrode (16) via an insulating film (13) on the CNT film (12), forming a plurality of gate openings (17) in the gate electrode (16) and the insulating film (13), and aligning upright the CNTs (12a) in the gate opening (17). The upright alignment generates a stable uniform emission current and provides excellent emission characteristics.Type: ApplicationFiled: December 22, 2003Publication date: June 3, 2004Inventors: Akihiko Okamoto, Kazuo Konuma, Yoshinori Tomihari, Fuminori Ito, Yuko Okada
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Publication number: 20040043219Abstract: Upon wet etching and thereby patterning carbon nanotubes (106) by a transfer method, a solution for dissolving a binder used in the transfer method as a solution used for the wet etching is used, and the carbon nanotubes (106) tangled with each other are rubbed off with a cloth-like substance (112) upon the wet etching. Furthermore, upon patterning the carbon nanotubes (106) using a dry etching method, a metal film or a film made of a substance resistant to damage upon the dry etching and causing no damage to the carbon nanotubes (106) when removed is used as a mask. A fine carbon nanotube pattern having an excellent flatness is formed.Type: ApplicationFiled: May 29, 2003Publication date: March 4, 2004Inventors: Fuminori Ito, Yuko Okada, Yoshinori Tomihari, Kazuo Konuma, Akihiko Okamoto