Patents by Inventor Seiji Yamahara

Seiji Yamahara 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: 8173558
    Abstract: A polyurethane elastomeric filament-containing weft knit fabric is obtained by plating a bare yarn of highly fusible, alkali-resistant polyurethane elastomeric filament having at least 50% retention of tenacity following dry heat treatment under 100% extension at 150° C. for 45 seconds, a melting point of 180° C. or below, and at least 60% retention of tenacity following treatment in a 2 g/L aqueous sodium hydroxide solution under 100% extension at 100° C. for 60 minutes at every loop of a weft knit fabric having a 1×1 rib knit structure or a center yarn-containing reversible knit structure composed of at least one type of non-elastomeric yarn, then heat setting the plated structure so as to thermally fuse the highly fusible, alkali-resistant polyurethane elastomeric filaments to each other or to the non-elastomeric yarns at crossover points therebetween.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: May 8, 2012
    Assignees: Nisshinbo Textile Inc., Gunze, Limited
    Inventors: Kunihiro Fukuoka, Koji Nishio, Seiji Yamahara, Takahiro Yamazaki, Takashi Maruoka, Fumiyuki Yamasaki, Susumu Kibune, Tsutomu Suzuoki, Shigeo Souda, Taisuke Yamamoto, Kouji Kimura, Shinobu Tabata
  • Patent number: 7631520
    Abstract: The invention provides innerwear with a structure in which the body fabric and the hem are joined together without sewing and which has outstanding effects in discrimination as products and in showing individuality for users. The innerwear includes a body fabric 2 made of a cylindrical double material with a body size and a hem 3 disposed at the end of the body fabric 2 and having apparently different texture therefrom, the body fabric 2 and the hem 3 being joined to each other without sewing. The body fabric 2 partly has a heterogeneously knitted part 5 with different functions, appearance, and texture therefrom by differentiating the way of knitting in the consecutive knitting process.
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: December 15, 2009
    Assignee: Gunze Limited
    Inventors: Seiji Yamahara, Takahiro Yamazaki, Takashi Maruoka, Katsunori Matsushita, Koji Kimura
  • Publication number: 20080032580
    Abstract: A polyurethane elastomeric filament-containing weft knit fabric is obtained by plating a bare yarn of highly fusible, alkali-resistant polyurethane elastomeric filament having at least 50% retention of tenacity following dry heat treatment under 100% extension at 150° C. for 45 seconds, a melting point of 180° C. or below, and at least 60% retention of tenacity following treatment in a 2 g/L aqueous sodium hydroxide solution under 100% extension at 100° C. for 60 minutes at every loop of a weft knit fabric having a 1×1 rib. knit structure or a center yarn-containing reversible knit structure composed of at least one type of non-elastomeric yarn, then heat setting the plated structure so as to thermally fuse the highly fusible, alkali-resistant polyurethane elastomeric filaments to each other or to the non-elastomeric yarns at crossover points therebetween.
    Type: Application
    Filed: June 7, 2005
    Publication date: February 7, 2008
    Applicants: NISSHINBO INDUSTRIES, INC., GUNZE LIMITED
    Inventors: Kunihiro Fukuoka, Koji Nishio, Seiji Yamahara, Takahiro Yamazaki, Takashi Maruoka, Fumiyuki Yamasaki, Susumu Kibune, Tsutomu Suzuoki, Shigeo Souda, Taisuke Yamamoto, Kouji Kimura, Shinobu Tabata
  • Publication number: 20060169001
    Abstract: The invention provides innerwear with a structure in which the body fabric and the hem are joined together without sewing and which has outstanding effects in discrimination as products and in showing individuality for users. The innerwear includes a body fabric 2 made of a cylindrical double material with a body size and a hem 3 disposed at the end of the body fabric 2 and having apparently different texture therefrom, the body fabric 2 and the hem 3 being joined to each other without sewing. The body fabric 2 partly has a heterogeneously knitted part 5 with different functions, appearance, and texture therefrom by differentiating the way of knitting in the consecutive knitting process.
    Type: Application
    Filed: March 1, 2004
    Publication date: August 3, 2006
    Inventors: Seiji Yamahara, Takahiro Yamazaki, Takashi Maruoka, Katsunori Matsushita, Koji Kimura