Patents by Inventor Yasushi Sakai

Yasushi Sakai 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).

  • Patent number: 8256893
    Abstract: A circumferentially elongated flat recessed portion (13) is formed in the outer edge surface (2c-b) of a spectacle lens (2). The distal end of a lens holding portion (9) is bent in a J shape to form an insertion portion (9A). The insertion portion (9A) is inserted into the recessed portion (13) and fixed in position using an adhesive (15). Thus, the spectacle lens (2) can be reliably held by the lens holding portion (9) with strong bonding between the spectacle lens (2) and the lens holding portion (9) free from the possibility of a reduction in bonding strength or fall-off upon twisting.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: September 4, 2012
    Assignee: Hoya Corporation
    Inventors: Norihisa Onoda, Asako Kawano, Yukihiro Izumitani, Yasushi Sakai
  • Patent number: 8252152
    Abstract: The quantity of oxide contained in a magnetic layer is controlled to control the crystal grains and the segregation structure for ensuring low noise characteristic in a granular magnetic layer of a perpendicular magnetic recording medium. The granular magnetic layer consists of ferromagnetic crystal grains and a nonmagnetic grain boundary region mainly of an oxide surrounding the ferromagnetic crystal grains. The perpendicular magnetic recording medium has a nonmagnetic underlayer composed of a metal or alloy having hexagonal closest-packed crystal structure. The ferromagnetic crystal grain is composed of an alloy containing at least cobalt and platinum. The volume proportion of the nonmagnetic grain boundary region mainly of the oxide falls within a range of 15% to 40% of the volume of the total magnetic layer.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: August 28, 2012
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Hiroyuki Uwazumi, Yasushi Sakai, Tadaaki Oikawa, Miyabi Nakamura
  • Patent number: 8197891
    Abstract: A perpendicular magnetic recording medium is disclosed in which each magnetic crystal grain in the magnetic recording layer has a multilayer structure and has a configuration like a truncated cone shape, in which the crystal grain of the final layer deposited in the film surface side at the final stage is smaller than the diameter of the crystal grain in the initial layer deposited on the substrate side at the initial stage. The invention improves S/N (signal output to noise ratio) by enhancing signal output and reducing noises. The medium is produced by a simple manufacturing method suitable for mass production, and provides a medium of high recording density by improving recording resolution.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: June 12, 2012
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Shunji Takenoiri, Yasushi Sakai
  • Patent number: 8105707
    Abstract: A perpendicular magnetic recording medium, which includes a nonmagnetic substrate, and a soft magnetic layer, a first orientation control layer, a nonmagnetic intermediate layer, and a perpendicular magnetic recording layer formed sequentially on the nonmagnetic substrate. The perpendicular magnetic recording medium further includes a second orientation control layer provided between the first orientation control layer and the nonmagnetic intermediate layer. The nonmagnetic intermediate layer has hexagonal close-packed (hcp) structure. The first orientation control layer has a face-centered cubic (fcc) structure. The second orientation control layer includes Co and Cr, and has the hcp structure.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: January 31, 2012
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Hiroyuki Uwazumi, Yasushi Sakai, Shunji Takenoiri
  • Patent number: 8095703
    Abstract: There is provided a data transfer method in an IEEE1394 system including a band request node and a transfer band management node. The method includes generating, at the band request node, a transfer request that can detect a data amount of transfer data and transmitting the transfer request from the band request node to the transfer band management node, determining, by the transfer band management node, whether a transfer band requested by the transfer request is ensured or not, notifying, from the transfer band management node, the band request node of the determination result, and transferring data from the band request node according to the determination result.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: January 10, 2012
    Assignee: Fujitsu Semiconductor Limited
    Inventors: Yasushi Sakai, Hitoshi Ogawa, Hideo Makabe
  • Patent number: 7993764
    Abstract: A perpendicular magnetic recording medium includes a soft magnetic backing layer, an underlayer, a nonmagnetic intermediate layer, and a magnetic recording layer sequentially deposited on a nonmagnetic substrate. The underlayer can contain cobalt, nickel, and iron and have an fcc structure and exhibit soft magnetic property. The underlayer preferably contains nickel in a range of 30 to 88 at % and iron in a range of 0.1 to 22 at %. The underlayer can further contain Si, B, Nb, N, Ta, Al, Pd, Cr, or Mo. The nonmagnetic intermediate layer preferably contains at least one element selected from Ru, Re, Pd, Ir, Pt, and Rh. The magnetic recording layer preferably has a granular structure. A seed layer can be further provided between the soft magnetic backing layer and the underlayer.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: August 9, 2011
    Assignee: Fuji Electric Device Technology Co., Ltd.
    Inventors: Shunji Takenoiri, Yasushi Sakai
  • Publication number: 20110037940
    Abstract: A circumferentially elongated flat recessed portion (13) is formed in the outer edge surface (2c-h) of a spectacle lens (2). The distal end of a lens holding portion (9) is bent in a J shape to form an insertion portion (9A). The insertion portion (9A) is inserted into the recessed portion (13) and fixed in position using an adhesive (15). Thus, the spectacle lens (2) can be reliably held by the lens holding portion (9) with strong bonding between the spectacle lens (2) and the lens holding portion (9) free from the possibility of a reduction in bonding strength or fall-off upon twisting.
    Type: Application
    Filed: April 22, 2009
    Publication date: February 17, 2011
    Inventors: Norihisa Onoda, Asoko Kawano, Yukihiro Izumitani, Yasushi Sakai
  • Publication number: 20100311837
    Abstract: The invention provides a method of improving the preservation stability of glutathione in a solid composition containing glutathione and arginine. In particular, glutathione and arginine are made to be coexistent with an organic acid such as citric acid, tartaric acid, ascorbic acid, malic acid, malonic acid, succinic acid, fumaric acid, maleic acid and the like. The amount of the organic acid to coexistent with glutathione and arginine is generally 0.1-2 parts by weight relative to 1 part by weight of arginine.
    Type: Application
    Filed: February 5, 2009
    Publication date: December 9, 2010
    Applicant: KYOWA HAKKO BIO CO., LTD.
    Inventors: Yasushi Sakai, Shun Kayahashi
  • Patent number: 7846902
    Abstract: A composition for oral administration is provided, which includes at least one dipeptide represented by the formula: (wherein X represents alanyl, and Y represents valine, leucine or isoleucine), with an object of providing a composition for oral administration which is excellent in nutrition, pharmacological effect and gustation, or providing a composition for oral administration which is excellent in processing characteristics such as solubility and tableting property.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: December 7, 2010
    Assignee: Kyowa Hakko Bio Co., Ltd.
    Inventors: Yasushi Sakai, Masao Kimura, Shun Kayahashi, Toshikazu Kamiya, Shin-ichi Hashimoto, Hideo Kawabe
  • Publication number: 20100297476
    Abstract: A perpendicular magnetic recording medium includes a nonmagnetic substrate, and a soft magnetic layer, a first orientation control layer, a second orientation control layer, a nonmagnetic intermediate layer, a magnetic recording layer, and a protective layer layered sequentially on the nonmagnetic substrate. The first orientation control layer includes a thin film having a face-centered cubic (fcc) structure. The magnetic recording layer includes a thin film layer having ferromagnetic crystal grains and nonmagnetic grain boundaries surrounding the ferromagnetic crystal grains, the ferromagnetic crystal grains including a CoPt alloy having ferromagnetic properties, and the nonmagnetic grain boundaries including an oxide or a nitride. The nonmagnetic intermediate layer includes a thin film containing Ru.
    Type: Application
    Filed: April 11, 2008
    Publication date: November 25, 2010
    Applicant: Fuji Electric Device Tecnology Co., Ltd.
    Inventors: Yasushi Sakai, Shunji Takenoiri
  • Publication number: 20100255174
    Abstract: The invention provides an easy-to-drink beverage that contains citrulline, wherein the generation of bad odors due to storage or heating is suppressed. In particular, the invention provides a beverage that contains citrulline and citric acid, as well as sodium citrate or disodium hydrogen phosphate.
    Type: Application
    Filed: November 17, 2008
    Publication date: October 7, 2010
    Applicant: KYOWA HAKKO BIO CO., LTD.
    Inventors: Yasushi Sakai, Takeshi Ikeda, Ayako Kamimura
  • Publication number: 20100249028
    Abstract: An object of the present invention is to provide an oral composition useful for promoting collagen synthesis and the like. The present invention can provide an oral composition containing collagen or gelatin or a degradation product thereof, and hydroxyproline or a salt thereof. The weight ratio of alanine and hydroxyproline contained in the amino acids obtained by hydrolyzing the oral composition is preferably 1:1.5-150.
    Type: Application
    Filed: May 30, 2008
    Publication date: September 30, 2010
    Applicant: KYOWA HAKKO BIO CO., LTD.
    Inventors: Ayako Kamimura, Yasushi Sakai, Takeshi Ikeda
  • Patent number: 7781080
    Abstract: A perpendicular magnetic recording medium composed of a nonmagnetic substrate having a surface onto which are provided a plurality of layers including, in the order recited, a soft underlayer; a nonmagnetic coupling layer; a hard magnetic pinning layer which is antiferromagnetically coupled to the soft underlayer at ambient temperature via the nonmagnetic coupling layer and which has an axis of easy magnetization which extends in a direction which is perpendicular to that of the surface of the nonmagnetic substrate; a nonmagnetic intermediate layer; and a magnetic recording layer. Such a perpendicular magnetic recording medium has an improved medium performance, with reduced noise originating from the presence of the soft underlayer, and no erasure of recorded magnetization when influenced by an external magnetic field.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: August 24, 2010
    Assignee: Fuji Electric Device Technology Co., Ltd.
    Inventors: Shunji Takenoiri, Yasushi Sakai
  • Publication number: 20100165509
    Abstract: A perpendicular magnetic recording medium, which includes a nonmagnetic substrate, and a soft magnetic layer, a first orientation control layer, a nonmagnetic intermediate layer, and a perpendicular magnetic recording layer formed sequentially on the nonmagnetic substrate. The perpendicular magnetic recording medium further includes a second orientation control layer provided between the first orientation control layer and the nonmagnetic intermediate layer. The nonmagnetic intermediate layer has hexagonal close-packed (hcp) structure. The first orientation control layer has a face-centered cubic (fcc) structure. The second orientation control layer includes Co and Cr, and has the hcp structure.
    Type: Application
    Filed: April 11, 2008
    Publication date: July 1, 2010
    Applicant: Fuji Electric Technology Co., Ltd.
    Inventors: Hiroyuki Uwazumi, Yasushi Sakai, Shunji Takenoiri
  • Publication number: 20100167093
    Abstract: A perpendicular magnetic recording medium, which includes a first magnetic recording layer, a second magnetic recording layer, and a third magnetic recording layer disposed sequentially on a nonmagnetic substrate, and a coupling layer formed between the first and second magnetic recording layers. The first, second and third magnetic recording layers have an easy axis of magnetization in a direction perpendicular to a film plane of the nonmagnetic substrate. The first and second magnetic recording layers are ferromagnetically coupled via the coupling layer.
    Type: Application
    Filed: March 6, 2008
    Publication date: July 1, 2010
    Applicant: Fuji Electric Device Technology Co., Ltd
    Inventors: Akira Sato, Shunji Takenoiri, Yasushi Sakai
  • Publication number: 20100093646
    Abstract: The present invention provides a method for enhancing memory in a normal individual, particularly in an individual of middle or advanced age who is regarded as clinically normal. The method for enhancing memory in a normal individual comprises administration of a peptide consisting of Leu and Ile or a modified form thereof.
    Type: Application
    Filed: September 30, 2009
    Publication date: April 15, 2010
    Applicants: KYOWA HAKKO BIO CO., LTD., NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Yasushi Sakai, Takeshi Ikeda, Atsumi Nitta, Yoko Hibi
  • Publication number: 20100048948
    Abstract: The present invention relates to a method of improving the preservation stability of glutathione, which is characterized by allowing glutathione to co-exist with an arginine-acidic amino acid salt. In addition, the present invention relates to a production method of a glutathione preparation, which is characterized by mixing glutathione and an arginine-acidic amino acid salt. By the production method, a glutathione preparation that resists quality deterioration can be provided. Moreover, the present invention relates to a preservation method of glutathione, which is characterized by allowing glutathione to co-exist with an arginine-acidic amino acid salt. By the preservation method, quality deterioration of glutathione during preservation can be suppressed.
    Type: Application
    Filed: October 4, 2007
    Publication date: February 25, 2010
    Applicant: KYOWA HAKKO BIO CO., LTD
    Inventors: Yasushi Sakai, Aki Kato, Masao Kimura
  • Publication number: 20100023656
    Abstract: There is provided a data transfer method in an IEEE1394 system including a band request node and a transfer band management node. The method includes generating, at the band request node, a transfer request that can detect a data amount of transfer data and transmitting the transfer request from the band request node to the transfer band management node, determining, by the transfer band management node, whether a transfer band requested by the transfer request is ensured or not, notifying, from the transfer band management node, the band request node of the determination result, and transferring data from the band request node according to the determination result.
    Type: Application
    Filed: September 28, 2009
    Publication date: January 28, 2010
    Applicant: FUJITSU MICROELECTRONICS LIMITED
    Inventors: Yasushi Sakai, Hitoshi Ogawa, Hideo Makabe
  • Patent number: 7635498
    Abstract: A perpendicular magnetic recording medium and method thereof, includes a nonmagnetic substrate; a soft magnetic under layer; an intermediate layer; a bilayer magnetic recording layer; a protective layer; and a liquid lubricant layer. According to a following order, the soft magnetic under layer, the intermediate layer, the bilayer magnetic recording layer, the protective layer, and the liquid lubricant layer are sequentially stacked on the nonmagnetic substrate. The bilayer magnetic recording layer includes a first magnetic layer including a CoCr alloy crystalline film, and a second magnetic layer including a rare earth-transition metal alloy noncrystalline film.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: December 22, 2009
    Assignee: Fuji Electric Device Technology, Co., Ltd.
    Inventors: Yasushi Sakai, Hiroyuki Uwazumi, Kazuo Enomoto, Sadayuki Watanabe
  • Patent number: RE41282
    Abstract: A perpendicular magnetic recording medium has a granular magnetic layer and a nonmagnetic underlayer of a metal or an alloy having a hexagonal close packed (hcp) crystal structure. A seed layer of a metal or an alloy of a face-centered cubic (fcc) crystal structure is provided under the nonmagnetic underlayer. Such a perpendicular magnetic recording medium exhibits excellent magnetic characteristics even when the thickness of the underlayer or the total thickness of the underlayer and the seed layer is very thin. Excellent magnetic characteristics can be obtained even when of the substrate is not preheated. Accordingly, a nonmagnetic substrate, such as a plastic resin can be employed to reduce the manufacturing cost.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: April 27, 2010
    Assignee: Fuji Electric Device Technology Co., Ltd.
    Inventors: Hiroyuki Uwazumi, Yasushi Sakai, Tadaaki Oikawa, Miyabi Nakamura