Patents by Inventor Yukio Yoshida

Yukio Yoshida 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: 20140187459
    Abstract: The invention provides a dialkyl ether represented by the following formula (1): (wherein each of R1 and R2 represents a C1 to C20 alkyl group, and n is an integer of 1 to 20), and a lubricating base oil and a lubricating oil composition containing the dialkyl ether. The lubricating base oil and the lubricating oil composition exhibit low viscosity, excellent viscosity-temperature characteristics, and high fluidity at low temperature.
    Type: Application
    Filed: December 20, 2013
    Publication date: July 3, 2014
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yukio YOSHIDA, Miki Monoi
  • Publication number: 20130102506
    Abstract: A lubricating base oil includes at least one of ionic liquids containing a compound represented by a formula (1): Z+A?, in which Z+ represents a cation and A? represents an anion, in which Z+ is a cyclic quaternary ammonium ion having two different side chains and A? is a conjugated amide ion.
    Type: Application
    Filed: July 27, 2011
    Publication date: April 25, 2013
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Yukio Yoshida, Yukitoshi Fujinami
  • Publication number: 20130088530
    Abstract: In a method of driving a liquid crystal panel, an overshoot signal is applied to the liquid crystal panel to display images on the liquid crystal panel. An overshoot level C is selected from a plurality of overshoot levels Dn. In this selecting, difference values between momentary values of a response waveform gn and momentary values of an ideal waveform f are obtained and added for a predetermined period and a minimum first error value E1 is obtained. One of the overshoot levels Dn corresponding to the response waveform gn having the minimum first error value E1 is selected as the overshoot level C. One of the overshoot levels Dn is selected by using an average value from the values obtained for the predetermined period similarly to humans' recognition of the liquid crystal display element. Accordingly, tailing or an image failure is less likely to occur.
    Type: Application
    Filed: June 3, 2011
    Publication date: April 11, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Mitsuhiro Shigeta, Nobuo Okano, Toshihisa Uchida, Yukio Yoshida, Kazuya Nakahata
  • Patent number: 8338653
    Abstract: Provided is a lubricating oil for continuously variable transmissions characterized by that used as a base oil are a synthetic oil I having the following properties: (a) a traction coefficient at 120° C. is 115% or more of that of 2,4-dicyclohexyl-2-methylpentane, (b) a viscosity at ?40° C. is not higher than a viscosity (260 Pa·s) of 2,4-dicyclohexyl-2-methylpentane, and (c) a viscosity index is 65 or higher, and a synthetic oil II having a viscosity of 1 Pa·s or lower at ?40° C. and that the above base oil has a specific property. The above lubricating oil is a lubricating oil for continuously variable transmissions which has a high traction coefficient even at high temperature and is endowed with a good low temperature fluidity and which is suited as a lubricating oil for continuously variable transmissions for automobiles.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: December 25, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hiroki Sekiguchi, Yukio Yoshida, Sumihiro Oda, Toshiyuki Tsubouchi, Hidetoshi Koga
  • Patent number: 8308532
    Abstract: Provided is a durable abrasive article which can conform even to a surface of a complicated shape and has an excellent abrasive power and which does not give any deep flaw to become a problem at a subsequent step and is not broken even when used in sanding the surface of the complicated shape. The abrasive article comprises a flexible resin film, an abrasive grain layer formed on the surface of the resin film, and an extremely flexible resin layer formed on the abrasive grain layer, wherein the flexible resin film has a thickness of 10 to 200 ?m, a tensile strength of 30 to 130 MPa and an elongation of 3 to 250%, wherein the abrasive grains of the abrasive grain layer are of P280 to P12, and wherein the extremely flexible resin layer has a 100% M of 1 to 20 MPa, a tensile strength of 20 to 90 MPa and an elongation of 250 to 1000%.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: November 13, 2012
    Assignee: Kovax Corporation
    Inventors: Akira Usui, Yukio Yoshida
  • Publication number: 20120157252
    Abstract: To provide a silent chain which makes it possible to further reduce friction loss during operation and to enhance operating efficiency, while also making it possible to reliably prevent assembly errors. A silent chain 1 in which a plurality of links 2 each having a pair of tooth parts 21 which mesh with sprockets and a pair of pin holes 20 are arranged in the lengthwise direction and thickness direction and are linked so as to be able to pivot about one another by linking pins 5 which are inserted into the pin holes 20, and sliding plates 3 are provided. The sliding plates 3 have a pair of pin holes 30 into which the linking pins 5 are inserted, and also have a back surface part 3a which has a greater back surface height h2 than the back surface height h1 of the links 2 and comes into contact with a tensioner arm or chain guide. The sliding plates 3 do not have tooth parts which mesh with the sprockets.
    Type: Application
    Filed: August 24, 2010
    Publication date: June 21, 2012
    Applicant: BORGWARNER INC.
    Inventors: Yukio Yoshida, Junichi Eda
  • Patent number: 8137226
    Abstract: A silent chain that can reduce friction loss during travel of a chain. A silent chain 1 is configured by stacking a large number of link plates 2 comprising a pair of tooth parts 22 and pin holes 21 in the thickness direction and the lengthwise direction, and also arranging guide plates 4 on the outermost side of the link plates 2, and coupling the link plates 2 and the guide plates 4 by means of connecting pins 3. Protruding parts 45 which can come into sliding contact with guide parts 56B of a chain guide 56 and guide parts 57B of a tension arm 57 during travel of the silent chain 1 are provided on an outer side surface 4A of the guide plates 4. The contact between the silent chain 1 and the chain guide 56 and tension arm 57 is made to be point contact, and friction loss during travel of the chain can be reduced.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: March 20, 2012
    Assignee: BorgWarner Inc.
    Inventor: Yukio Yoshida
  • Publication number: 20110224041
    Abstract: A silent chain 1 in which a large number of link plates 2 comprising a pair of tooth parts 22 and pin holes 21 are stacked in the thickness direction and the length direction and are linked by linking pins 3, and guide plates 4 are mounted on the linking pins 3. The guide plates 4 are arranged in guide rows G at a central position in the width direction and at positions at both ends in the width direction, and the height H of the back part of each guide plate 4 is greater than the height h of the back parts of the link plates 2.
    Type: Application
    Filed: June 15, 2009
    Publication date: September 15, 2011
    Applicant: BORGWARNER INC.
    Inventors: Toshikazu Tokita, Yukio Yoshida, Akio Matsuda
  • Publication number: 20110193034
    Abstract: Copper-containing nanoparticles with excellent oxidation resistance is provided. The present invention relates to a method for manufacturing copper-containing nanoparticles including obtaining copper-containing nanoparticles that contain an organic component by heat treating an organic copper compound at a temperature equal to or higher than a decomposition initiation temperature of the compound and lower than a complete decomposition temperature of the compound in a non-oxidative atmosphere in the presence of an organic material containing a 1,2-alkanediol having 5 or more carbon atoms and/or a derivative thereof.
    Type: Application
    Filed: August 6, 2009
    Publication date: August 11, 2011
    Applicants: OSAKA MUNICIPAL TECHNICAL RESEARCH INSTITUTE, DAIKEN CHEMICAL CO., LTD.
    Inventors: Masami Nakamoto, Mari Yamamoto, Yukiyasu Kashiwagi, Yukio Yoshida, Hiroshi Kakiuchi, Shinsuke Matsumura
  • Publication number: 20110193033
    Abstract: Metal nanoparticles having improved migration resistance are provided. The present invention relates to a method for manufacturing composite nanoparticles including obtaining composite nanoparticles containing at least silver and copper in a single particle by heat treating a mixture containing an organic silver compound and an organic copper compound at a temperature of 150° C. or more in a non-oxidative atmosphere in the presence of a tertiary amine compound represented by the general formula R1R2R3N (wherein R1 through R3 are optionally substituted alkyl groups or aryl groups that may be the same or different, R1 through R3 may be linked in a ring, and the number of carbon atoms in each of R1 through R3 is 5 through 18 and may be the same or different).
    Type: Application
    Filed: August 6, 2009
    Publication date: August 11, 2011
    Applicants: OSAKA MUNICIPAL TECHNICAL RESEARCH INSTITUTE, DAIKEN CHEMICAL CO., LTD.
    Inventors: Masami Nakamoto, Mari Yamamoto, Yukiyasu Kashiwagi, Yukio Yoshida, Hiroshi Kakiuchi, Shinsuke Matsumura
  • Patent number: 7964540
    Abstract: A lube base oil which comprises at least one hydrocarbon compound having as the basic skeleton a structure represented by any of the general formulae (I) to (VI) and has a viscosity at ?40° C. of 40 Pa·s or lower and a viscosity index of 80 or higher, (wherein p is an integer of 1 to 10, provided that in the formulae (I) and (II), p is not 1). It satisfies the coefficient of high-temperature traction, low-temperature flowability, and viscosity index on a high level.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: June 21, 2011
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yukio Yoshida, Toshiyuki Tsubouchi, Hiroki Sekiguchi, Hidetoshi Koga
  • Patent number: 7957866
    Abstract: In a configuration in which a control is performed for actuating the steering cylinder 17 so that the steering angle of the front wheel 11a (steering wheel), which is detected by the steering angle detector 62, becomes a target steering angle which is set in accordance with an operational state of the steering dial 42, the target steering angle of the front wheel 11a (steering wheel), which is set in accordance with an operational state of the steering dial 42, is compared with a detected steering angle of the front wheel 11a, which is detected by the steering detector 62, and when the difference between the target steering angle and the detected steering angle is a predetermined value or higher, the traveling speed of the vehicle 10 is regulated so that the traveling speed of the vehicle 10 becomes a predetermined speed or lower.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: June 7, 2011
    Assignee: Kabushiki Kaisha Aichi Corporation
    Inventors: Takaaki Oba, Shunichi Nakazawa, Futoshi Kobayashi, Yukio Yoshida, Motoaki Suda
  • Patent number: 7956226
    Abstract: A traction drive fluid composition which comprises component (A) a base oil for traction drives bearing at least one selected from a quaternary carbon atom or an alicyclic structure in the molecule and component (B) at least one polymer having a weight average molecular weight in the range of 8,000 to 40,000 and which is selected from among (a) hydrocarbon polymers each containing as a constituent at least 10 mole % of a monomer bearing a cyclic structure, (b) hydrocarbon polymers each containing at least 25% of quaternary carbon atoms in the backbone chain, and (c) hydrogenated products from the polymers (a) and (b). The traction drive fluid composition is improved in viscosity index without lowering the traction coefficient to a level lower than that of the base oil and is excellent in shear stability.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: June 7, 2011
    Assignee: Idemitsu Kosan Co., Ltd
    Inventors: Toshiyuki Tsubouchi, Yukio Yoshida, Hidetoshi Koga
  • Publication number: 20100179079
    Abstract: Provided is a lubricating oil for continuously variable transmissions characterized by that used as a base oil are a synthetic oil I having the following properties: (a) a traction coefficient at 120° C. is 115% or more of that of 2,4-dicyclohexyl-2-methylpentane, (b) a viscosity at ?40° C. is not higher than a viscosity (260 Pa·s) of 2,4-dicyclohexyl-2-methylpentane and (c) a viscosity index is 65 or higher and a synthetic oil II having a viscosity of 1 Pa·s or lower at ?40° C. and that the above base oil has a specific property. The above lubricating oil is a lubricating oil for continuously variable transmissions which has a high traction coefficient even at high temperature and is endowed with a good low temperature fluidity and which is suited as a lubricating oil for continuously variable transmissions for automobiles.
    Type: Application
    Filed: June 24, 2008
    Publication date: July 15, 2010
    Applicant: IDEMITSU KOSAN CO., LTD
    Inventors: Hiroki Sekiguchi, Yukio Yoshida, Sumihiro Oda, Toshiyuki Tsubouchi, Hidetoshi Koga
  • Publication number: 20100112920
    Abstract: Provided is a durable abrasive article which can conform even to a surface of a complicated shape and has an excellent abrasive power and which does not give any deep flaw to become a problem at a subsequent step and is not broken even when used in sanding the surface of the complicated shape. The abrasive article comprises a flexible resin film, an abrasive grain layer formed on the surface of the resin film, and an extremely flexible resin layer formed on the abrasive grain layer, wherein the flexible resin film has a thickness of 10 to 200 ?m, a tensile strength of 30 to 130 MPa and an elongation of 3 to 250%, wherein the abrasive grains of the abrasive grain layer are of P280 to P12, and wherein the extremely flexible resin layer has a 100% M of 1 to 20 MPa, a tensile strength of 20 to 90 MPa and an elongation of 250 to 1000%.
    Type: Application
    Filed: January 13, 2010
    Publication date: May 6, 2010
    Applicant: KOVAX CORPORATION
    Inventors: Akira USUI, Yukio YOSHIDA
  • Publication number: 20100016110
    Abstract: A silent chain that can reduce friction loss during travel of a chain. A silent chain 1 is configured by stacking a large number of link plates 2 comprising a pair of tooth parts 22 and pin holes 21 in the thickness direction and the lengthwise direction, and also arranging guide plates 4 on the outermost side of the link plates 2, and coupling the link plates 2 and the guide plates 4 by means of connecting pins 3. Protruding parts 45 which can come into sliding contact with guide parts 56B of a chain guide 56 and guide parts 57B of a tension arm 57 during travel of the silent chain 1 are provided on an outer side surface 4A of the guide plates 4. The contact between the silent chain 1 and the chain guide 56 and tension arm 57 is made to be point contact, and friction loss during travel of the chain can be reduced.
    Type: Application
    Filed: December 19, 2007
    Publication date: January 21, 2010
    Applicant: BORGWARNER MORSE TEC JAPAN K.K.
    Inventor: Yukio Yoshida
  • Publication number: 20090092297
    Abstract: An image processor performing image processing for reproducing the skin color of an object easily on a screen without being affected by variation in surrounding environment. The image processor (3) comprises a living body color information acquiring section (9) for acquiring color data in the white region of a living body from image data obtained by photographing the living body as an object, and a data processing section (10) performing white balance adjustment of the photographed image data based on the color data acquired at the living body color information acquiring section.
    Type: Application
    Filed: July 6, 2006
    Publication date: April 9, 2009
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Shin-ichiroh Kitoh, Po-Chieh Hung, Yukio Yoshida
  • Patent number: 7507867
    Abstract: A bicyclo[2.2.1]heptane derivative represented by following general formula (1): wherein R1 and R2 each represent hydrogen atom or methyl group, and R3 represents methyl group or ethyl group. The derivative is suitable as a high viscosity hydrocarbon base material used for tackfiers for adhesives and process oils for rubber and resins.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: March 24, 2009
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Toshiyuki Tsubouchi, Yukio Yoshida, Motohisa Ido
  • Patent number: 7402715
    Abstract: A fluid for traction drives for automobiles which comprises (A) a hydrocarbon compound having two bridged rings selected from bicyclo[2.2.1]heptane ring, bicyclo[3.2.1]octane ring, bicyclo[3.3.0]octane ring and bicyclo[2.2.2]octane ring and (B) a hydrocarbon compound having at least one structure selected from quaternary carbon atom and ring structures and having a kinematic viscosity at 40° C. of 10 mm2/s or smaller, and has a viscosity at ?40° C. of 40,000 Pa·s or smaller and a flash point of 140° C. or higher, is provided. This fluid exhibits a great traction coefficient at high temperatures and very small viscosity at low temperatures. A fluid for traction drives which comprises a specific bicyclo[2,2,1]heptane derivative having 14 to 17 carbon atoms and having a viscosity index of 0 or greater is also provided. This fluid exhibits improved viscosity-temperature characteristics, decreased viscosity and improved fluidity at low temperatures.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: July 22, 2008
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yukio Yoshida, Toshiyuki Tsubouchi, Motohisa Ido, Hidetoshi Koga
  • Publication number: 20080097666
    Abstract: In a configuration in which a control is performed for actuating the steering cylinder 17 so that the steering angle of the front wheel 11a (steering wheel), which is detected by the steering angle detector 62, becomes a target steering angle which is set in accordance with an operational state of the steering dial 42, the target steering angle of the front wheel 11a (steering wheel), which is set in accordance with an operational state of the steering dial 42, is compared with a detected steering angle of the front wheel 11a, which is detected by the steering detector 62, and when the difference between the target steering angle and the detected steering angle is a predetermined value or higher, the traveling speed of the vehicle 10 is regulated so that the traveling speed of the vehicle 10 becomes a predetermined speed or lower.
    Type: Application
    Filed: May 31, 2006
    Publication date: April 24, 2008
    Applicant: KABUSHIKI KAISHA AICHI CORPORATION
    Inventors: Takaaki Oba, Shunichi Nakazawa, Futoshi Kobayashi, Yukio Yoshida