Patents by Inventor Akihiko Kurahashi

Akihiko Kurahashi 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: 20040077248
    Abstract: A packaging multilayer material 14 is formed by sequentially laying an air permeable heat-resistant fiber material layer 11 having a heat-resistance of not lower than 150° C., a polyethylene type resin spunbonded non-woven fabric layer 12 and a microporous film layer 13 in the above listed order by means of thermal bonding. The air permeable heat-resistant fiber material layer 11 is made of resin spunbonded non-woven fabric having a melting point between 150 and 300° C. and the polyethylene type resin spunbonded non-woven fabric layer 12 is an ethylene-&agr;-olefin copolymer having a density between 880 and 950 kg/m3, while the microporous film layer 13 is made of polyethylene type resin.
    Type: Application
    Filed: August 25, 2003
    Publication date: April 22, 2004
    Inventors: Akihiko Kurahashi, Hiroyuki Nakagami, Hiroyuki Mitsuzuka
  • Publication number: 20040058610
    Abstract: A multilayer non woven fabric having a polypropylene spun bonded non woven fabric and a polypropylene melt blown non woven fabric, characterized in that it has a bending resistance, the sum of the values for longitudinal and transverse directions as measured according to JIS L 1096 6. 19.1 A method (45 degree cantilever method) of 70 to 120 mm, the surface of the spun bonded non woven fabric has a static friction coefficient of 0.1 to 0.4. The multilayer non woven fabric preferably has a polypropylene melt brown non woven fabric layer between polypropylene spun bonded non woven fabric layers.
    Type: Application
    Filed: September 26, 2003
    Publication date: March 25, 2004
    Inventors: Masahide Ishikawa, Akihiko Kurahashi
  • Publication number: 20030181112
    Abstract: A spunbonded nonwoven fabric which is made of a polyolefin resin and has an average fiber diameter of 5 to 60 &mgr;m, METSUKE of 5 to 200 g/m2, and a coefficient of static friction of 0.1 to 0.4; or a spunbonded nonwoven fabric which is made of a polypropylene resin and has a stiffness [sum of the values for the longitudinal and transverse directions as obtained according to JIS L 1096, 6.19.1, method A (45° cantilever method)] of 70 to 120 mm and a coefficient of static friction of 0.1 to 0.4.
    Type: Application
    Filed: May 16, 2003
    Publication date: September 25, 2003
    Inventors: Masahide Ishikawa, Akihiko Kurahashi
  • Publication number: 20030181119
    Abstract: A nonwoven-fabric laminate which comprises a spunbonded nonwoven polyolefin resin fabric having an average fiber diameter of 5 to 60 &mgr;m and superposed thereon a permeable water-proofing material (a melt-blown nonwoven-fabric, microporous resin film, etc.) and in which the spunbonded nonwoven-fabric side has a coefficient of static friction of 0.1 to 0.4.
    Type: Application
    Filed: May 6, 2003
    Publication date: September 25, 2003
    Inventors: Masahide Ishikawa, Akihiko Kurahashi
  • Patent number: 5346771
    Abstract: A curable phosphazene composition contains a curable phosphazene compound and a silicone-modified curable compound. The curable phosphazene composition is coated on a substrate and cured to form a coated article. The cured coating is excellent in surface hardness, slip properties and water repellency.
    Type: Grant
    Filed: July 1, 1993
    Date of Patent: September 13, 1994
    Assignee: Idemitsu Petrochemical Company Limited
    Inventors: Akihiko Kurahashi, Masahiro Kitayama
  • Patent number: 5280090
    Abstract: A curable phosphazene composition contains a curable phosphazene compound and a silicone-modified curable compound. The curable phosphazene composition is coated on a substrate and cured to form a coated article. The cured coating is excellent in surface hardness, slip properties and water repellency.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: January 18, 1994
    Assignee: Idemitsu Petrochemical Company, Limited
    Inventors: Akihiko Kurahashi, Masahiro Kitayama
  • Patent number: 4306599
    Abstract: A screwdriver main body supports a shank which is axially slidable and rotatable with respect thereto. A change-over ring supports a latch pawl which is turnable by its engagement with the ring mechanism. The pawl, when turned inward, locks the shank and prevents it from axial, slidable and rotatable movement with respect to the main body.
    Type: Grant
    Filed: February 15, 1979
    Date of Patent: December 22, 1981
    Inventor: Akihiko Kurahashi