Patents by Inventor Nobuyuki Arai

Nobuyuki Arai 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: 20150210813
    Abstract: A prepreg includes; sizing agent-coated carbon fibers coated with a sizing agent; and a thermosetting resin composition impregnated into the sizing agent-coated carbon fibers. The sizing agent includes an aliphatic epoxy compound (A) and an aromatic compound (B) at least containing an aromatic epoxy compound (B1). The thermosetting resin composition includes a thermosetting resin (D) and a latent hardener (E), and optionally includes an additive (F) other than the thermosetting resin (D) and the latent hardener (E). The (a)/(b) ratio is within a predetermined range where (a) is the height of a component at a binding energy assigned to CHx, C—C, and C?C and (b) is the height of a component at a binding energy assigned to C—O in a C1s core spectrum of the surfaces of the sizing agent-coated carbon fibers analyzed by X-ray photoelectron spectroscopy.
    Type: Application
    Filed: July 16, 2013
    Publication date: July 30, 2015
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Nobuyuki Arai, Tomoko Ichikawa, Hiroshi Taiko, Makoto Endo, Masanobu Kobayashi, Jun Misumi
  • Publication number: 20150205099
    Abstract: An optical projection system enlarges an image on an image display element and projects the enlarged image onto a screen. The system includes the image display element, a first optical system including lens groups arranged in order from an image display element side, a lens barrel holding the lens groups, and a free-form surface lens rotationally asymmetric and made from plastic, and a second optical system including a curved mirror disposed after the first optical system, wherein the free-form surface lens is formed to decrease in thickness from an intersection point between a surface of the free-form surface lens and an optical axis of the first optical system to an outer periphery of the lens along a line extending to the outer periphery.
    Type: Application
    Filed: January 15, 2015
    Publication date: July 23, 2015
    Inventor: Nobuyuki ARAI
  • Publication number: 20150184333
    Abstract: A prepreg is formed by impregnating sizing agent-coated carbon fibers coated with a sizing agent with a thermosetting resin composition. The sizing agent contains an aliphatic epoxy compound (A) and an aromatic compound (B) at least containing an aromatic epoxy compound (B1). The sizing agent-coated carbon fibers has an (a)/(b) ratio of 0.50 to 0.90 where (a) is a height (cps) of a component at a binding energy (284.6 eV) assigned to CHx, C—C, and C?C and (b) is a height (cps) of a component at a binding energy (286.1 eV) assigned to C—O in a C1s core spectrum of a surface of the sizing agent applied onto the carbon fibers analyzed by X-ray photoelectron spectroscopy using AlK?1,2 as an X-ray source at a photoelectron takeoff angle of 15°.
    Type: Application
    Filed: July 16, 2013
    Publication date: July 2, 2015
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Nobuyuki Arai, Tomoko Ichikawa, Hiroshi Taiko, Makoto Endo, Masanobu Kobayashi, Jun Misumi
  • Publication number: 20140340658
    Abstract: There is provided a projection optical system capable of projecting an image formed on an image forming unit on a projection plane, which has an extremely short projection distance and a small size.
    Type: Application
    Filed: May 8, 2014
    Publication date: November 20, 2014
    Inventors: Yohei Takano, Hibiki Tatsuno, Nobuyuki Arai, Hirotoshi Nakayama
  • Publication number: 20140329075
    Abstract: Sizing agent-coated carbon fibers includes: a sizing agent including an aliphatic epoxy compound (A) and at least containing an aromatic epoxy compound (B1) as an aromatic compound (B); and carbon fibers coated with the sizing agent, wherein the sizing agent-coated carbon fibers have an (a)/(b) ratio of 0.50 to 0.90 where (a) is a height (cps) of a component at a binding energy (284.6 eV) assigned to CHx, C—C, and C?C and (b) is a height (cps) of a component at a binding energy (286.1 eV) assigned to C—O in a C1s core spectrum of a surface of the sizing agent applied onto the carbon fibers analyzed by X-ray photoelectron spectroscopy using AlK?1,2 as an X-ray source at a photoelectron takeoff angle of 15°.
    Type: Application
    Filed: December 18, 2012
    Publication date: November 6, 2014
    Inventors: Tomoko Ichikawa, Makoto Endo, Hiroshi Taiko, Masanobu Kobayashi, Nobuyuki Arai, Jun Misumi
  • Publication number: 20140309336
    Abstract: Embodiments herein relate to a prepreg comprising a thermosetting resin, and reinforcing fibers in the thermosetting resin, wherein when the prepreg is cured in vacuum bag only conditions, and a method of making the same. The method also applies for autoclave processing. Embodiments also relate to a cured fiber reinforced composite material made by thermally curing the prepreg.
    Type: Application
    Filed: December 26, 2012
    Publication date: October 16, 2014
    Applicant: TORAY INDUSTRIES. INC
    Inventors: Jonathan C Hughes, Jeffrey A Satterwhite, Nobuyuki Arai, Atsuhito Arai, Alfred P Haro, Kenichi Yoshioka
  • Publication number: 20140159865
    Abstract: In a remote control device for a vehicle including: a portable transmitter configured to repeatedly transmit a signal for giving an instruction to activate an activation device mounted in a vehicle, in response to an operation of a manipulator which is performed continuously for a predetermined time or more; and a vehicle-side receiver provided in the vehicle to activate the activation device based on the signal transmitted from the portable transmitter, the portable transmitter transmits a first signal including a data frame having at least an ID code, a function code determining an action of the activation device, and a first error detection code and then repeatedly transmits a second signal, and a data frame of the second signal having same function code as that of the first signal and a second error detection code generated based on the function code, and the data frame of the first signal.
    Type: Application
    Filed: December 2, 2013
    Publication date: June 12, 2014
    Applicants: OMRON AUTOMOTIVE ELECTRONICS CO., LTD., KABUSHIKI KAISHA HONDA LOCK
    Inventors: Shinichiro ETO, Yoshihito KUNIMOTO, Nobuyuki ARAI, Yosuke KAJIMA, Kazunobu KAMISAWA, Takanori OKANIWA
  • Patent number: 8699096
    Abstract: A deflector deflects a light beam from a light source. A scanning optical system focuses the light beam deflected by the deflector. An image carrying member is located at a focal position of the light beam and includes a surface that is scanned in a main scanning direction with the light beam focused by the scanning optical system. One pixel of an image is formed by a plurality of light spots having different focal positions in at least a sub-scanning direction. At least one light spot from among the light spots is formed on the surface of the image carrying member at a scan timing different from those of rest of the light spots.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: April 15, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Nobuyuki Arai, Yoshinori Hayashi, Masako Yoshii
  • Publication number: 20140087178
    Abstract: An embodiment relates to a prepreg having a structure comprising a first layer and a second layer, wherein the prepreg comprises component (A) comprising a reinforcing fiber, component (B) comprising a thermosetting resin, and component (C) comprising a particle or a fiber of a thermoplastic resin, the component (C) is substantially locally distributed in the first layer and the prepreg is a partially impregnated prepreg.
    Type: Application
    Filed: March 30, 2012
    Publication date: March 27, 2014
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Nobuyuki Arai, Jonathan C. Hughes, Jeffrey A. Satterwhite, Atsuhito Arai, Alfred P. Haro, Kenichi Yoshioka
  • Publication number: 20140051070
    Abstract: The present invention provides a streptavidin-coupled magnetic particle with high biotin-binding capacity, and a manufacturing method thereof. The streptavidin-coupled magnetic particle has a structure in which streptavidins are cross-linked with each other on a magnetic particle. A method for manufacturing the streptavidin-coupled magnetic particle includes the steps of: (1) preparing a suspension containing magnetic particles having amino groups on their surface; and (2) reacting the magnetic particles with streptavidin and glutaraldehyde by adding glutaraldehyde in the presence of streptavidin to the suspension prepared in step (1). The streptavidin-coupled magnetic particle of the present invention, and the streptavidin-coupled magnetic particle manufactured by the manufacturing method of the present invention are useful in clinical diagnosis.
    Type: Application
    Filed: February 15, 2012
    Publication date: February 20, 2014
    Applicant: Kyowa Medex Co., Ltd.
    Inventors: Nobuyuki Arai, Yasuhiro Matsuoka, Kazuki Morita
  • Publication number: 20130344325
    Abstract: Embodiments disclosed herein include a structure comprising an adherend and an adhesive composition, wherein the adhesive composition comprises at least a thermosetting resin, a curing agent, and an interfacial material, wherein the adherend is suitable for concentrating the interfacial material in an interfacial region between the adherend and the adhesive composition upon curing of the adhesive composition; a method of manufacturing a composite article by curing the adhesive composition and a reinforcing fiber; and a method of manufacturing an adhesive bonded joint comprising applying the adhesive composition to a surface of one of the two or of different kinds the adherend, and curing the adhesive composition to form an adhesive bond between the adherends. The resulting interfacial region, viz., the reinforced interphase, is reinforced by one or more layers of the interfacial material such that substantial improvements in bond strength and fracture toughness are observed.
    Type: Application
    Filed: February 24, 2012
    Publication date: December 26, 2013
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Felix N. Nguyen, Kenichi Yoshioka, Alfred P. Haro, Nobuyuki Arai
  • Patent number: 8564635
    Abstract: An optical scanner includes a light source including light emitters, an aperture member collimating light beams from the light source, a deflector deflecting the light beams passing through the aperture member, and a scanning optical system condensing the deflected light beams onto a scanned surface to optically scan the surface in a main-scanning direction. The scanning optical system includes a resin scanning system having at least one resin scanning lens. At least one folding mirror/sheet glass is disposed between a scanning lens nearest to the deflector in the resin scanning system and the scanned surface. At least one scanning lens in the resin scanning system has an uneven birefringence distribution with respect to a sub-scanning direction. An optical conjugate image of the aperture member is formed between a lens surface nearest to the deflector in the resin scanning system and a lens surface nearest to the scanned surface with respect to the sub-scanning direction.
    Type: Grant
    Filed: August 25, 2010
    Date of Patent: October 22, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Hibiki Tatsuno, Nobuyuki Arai
  • Publication number: 20130217283
    Abstract: An epoxy resin composition having components (A), (B), (C), and (D), wherein the epoxy resin composition has a viscosity at 40° C. of about 1×103 to about 1×104 Pa·s, a curing start temperature of about 90 to about 110° C., and a minimum viscosity at the curing start temperature of about 2 to about 20 Pa·s, wherein the components (A), (B), (C), and (D) are as follows: (A) About 60 weight parts or more of a tetraglycidyl amine type epoxy resin per 100 weight parts of the epoxy resin blend; (B) Dicyandiamide; (C) Diaminodiphenyl sulfone and (D) Urea compound.
    Type: Application
    Filed: November 7, 2011
    Publication date: August 22, 2013
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Nobuyuki Arai, Alfred P. Haro, Jonathan C. Hughes, Norimitsu Natsume
  • Patent number: 8497894
    Abstract: An optical scanning system for a K station includes a resin scanning lens and three reflecting mirrors. Two reflectance ratios are calculated: one being the reflectance ratio of a luminous flux traveling toward the scanning start position of a drum-shaped photosensitive drum and the other being the reflectance ratio of a luminous flux traveling toward the scanning end position of the photosensitive drum. The magnitude relation between the two reflectance ratios is such that the reflecting mirror has an inverse magnitude relation to that of the other reflecting mirrors. Moreover, the difference is calculated between the largest value and the smallest value of the reflectance ratio, where the reflectance ratio depends on the angle of deviation of the polygon mirror. The reflecting mirror has the largest difference among the three reflecting mirrors.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: July 30, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Nobuyuki Arai, Hibiki Tatsuno
  • Publication number: 20130188004
    Abstract: In a light beam scanning device, a plurality of light sources, which irradiates a plurality of light beams in a first direction and is retained by a holder, are disposed at distance from one another in a second direction orthogonal to the first direction. The plurality of light beams are incident, via a coupling optical system, to deflecting and reflecting surfaces of a deflector from a direction that is tilted with respect to a plane orthogonal to the rotational shaft of the deflector. The holder is supported by a housing of the light beam scanning device at a plurality of different positions in a third direction extending from the light source to the coupling optical system.
    Type: Application
    Filed: December 17, 2012
    Publication date: July 25, 2013
    Inventors: Nobuyuki Arai, Makoto Hirakawa, Yoshinobu Sakaue, Noboru Kusunose, Tomoya Fujii
  • Patent number: 8451307
    Abstract: A pre-deflector optical system includes an isolator arranged on an optical path of a light beam from a light source. The isolator has a first surface with different light transmittances depending on a polarization state of an incident light beam on a first side close to the light source and a second surface imparting an optical phase difference of a ¼ wavelength to the incident light beam on a second side. A deflector deflects the light beam passed through the pre-deflector optical system. A rotation mechanism rotates the isolator around its optical axis. A holding member holds the light source and the isolator in a predetermined positional relationship.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: May 28, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Nobuyuki Arai, Nobuaki Kubo
  • Patent number: 8441512
    Abstract: An optical scanner includes a light source, a deflector and a scanning optical system. The scanning optical system includes a first optical system including at least one resin scanning lens, and a second optical system between the target surface and one resin scanning lens. The second optical system includes at least one of a folding mirror(s) and a glass sheet(s), wherein m1+g2=m2+g1 is satisfied wherein m1 and g1 are respectively number of the folding mirror(s) and number of the glass sheet(s) to which the first ray has a shorter optical path than the second ray does, m2 and g2 are respectively number of the folding mirror(s) and number of the glass sheet(s) to which the first ray has a longer optical path than the second ray does.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: May 14, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Hibiki Tatsuno, Daisuke Ichii, Nobuyuki Arai
  • Patent number: 8394491
    Abstract: A prepreg containing a carbon fiber [A] and a thermosetting resin [B], and in addition, satisfying at least one of the following (1) and (2). (1) a thermoplastic resin particle or fiber [C] and a conductive particle or fiber [D] are contained, and weight ratio expressed by [compounding amount of [C] (parts by weight)]/[compounding amount of [D] (parts by weight)] is 1 to 1000. (2) a conductive particle or fiber of which thermoplastic resin nucleus or core is coated with a conductive substance [E] is contained.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: March 12, 2013
    Assignee: Toray Industries, Inc.
    Inventors: Nobuyuki Arai, Norimitsu Natsume, Kenichi Yoshioka, Junko Kawasaki, Hiroshi Takezaki
  • Patent number: 8264515
    Abstract: An optical scanning device includes: a light source; an optical deflecting unit that deflects a light beam emitted from the light source to scan on a scanning surface in main-scanning direction; and a scanning optical system that includes a first scanning lens and a second scanning lens that converge the light beam that is deflected onto the scanning surface. Distance between an exit surface of the first scanning lens and an incident surface of the second scanning lens is shorter than distance between a deflection facet of the optical deflecting unit and an incident surface of the first scanning lens, an exit surface of the second scanning lens is nearer to the deflection facet than a midpoint between the deflection facet and the scanning surface, and an image-surface-side principal point of the scanning optical system in sub-scanning direction is nearer to the scanning surface than the midpoint.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: September 11, 2012
    Assignee: Ricoh Company, Ltd.
    Inventor: Nobuyuki Arai
  • Patent number: 8228580
    Abstract: An optical scanner includes a plurality of scanning optical systems each of which scans a different surface to be scanned and includes a light source configured to emit a light beam, an optical deflector having a plurality of reflection surfaces, and a synchronization detector configured to receive the light beam deflected by the optical deflector and detect a timing to scan an effective area of the surface to be scanned with the deflected light beam before a scanning is started or after the scanning is completed. The synchronization detector of one of a pair of scanning optical systems is disposed on a scanning end side to determine the scanning timing, and the synchronization detector of the other one of the pair of scanning optical systems is disposed on a scanning start side to determine the scanning timing.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: July 24, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Nobuyuki Arai, Yoshinori Hayashi, Naoto Watanabe