Patents by Inventor Yuuki Tetsuka

Yuuki Tetsuka 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).

  • Biodegradable resin composition, and biodegradable film
    Patent number: 9441105
    Abstract: There are disclosed a biodegradable resin composition including a starch (a1), a biodegradable resin (a2) other than a polylactic acid-based polymer and a non-crystalline polylactic acid-based polymer (b), a mass ratio of the starch (a1) to the biodegradable resin (a2) other than a polylactic acid-based polymer (a1/a2) being from 20/80 to 50/50, and a mass ratio of a sum of the components other than the polymer (b) to the polymer (b) (sum of components other than polymer (b)/polymer (b)) being from 95/5 to 50/50, and a biodegradable film using the biodegradable resin composition.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: September 13, 2016
    Assignee: SHOWA DENKO K.K.
    Inventors: Yasushi Ichikawa, Hideharu Kimura, Yuuki Tetsuka
  • BIODEGRADABLE RESIN COMPOSITION, AND BIODEGRADABLE FILM
    Publication number: 20140336310
    Abstract: There are disclosed a biodegradable resin composition including a starch (a1), a biodegradable resin (a2) other than a polylactic acid-based polymer and a non-crystalline polylactic acid-based polymer (b), a mass ratio of the starch (a1) to the biodegradable resin (a2) other than a polylactic acid-based polymer (a1/a2) being from 20/80 to 50/50, and a mass ratio of a sum of the components other than the polymer (b) to the polymer (b) (sum of components other than polymer (b)/polymer (b)) being from 95/5 to 50/50, and a biodegradable film using the biodegradable resin composition.
    Type: Application
    Filed: November 5, 2012
    Publication date: November 13, 2014
    Applicant: SHOWA DENKO K.K.
    Inventors: Yasushi Ichikawa, Hideharu Kimura, Yuuki Tetsuka
  • BIODEGRADABLE RESIN COMPOSITION, AND BIODEGRADABLE FILM
    Publication number: 20140303291
    Abstract: There are disclosed a biodegradable resin composition including a starch (a1), a condensation polymer (a2) of an aliphatic diol and an aliphatic dicarboxylic acid, a non-crystalline polylactic acid-based polymer (b) and an aliphatic aromatic polyester (c), a mass ratio (a1/a2) being from 20/80 to 50/50, a mass ratio of a composition (A) comprising the components other than the components (b) and (c) to the component (b) ((A)/(b)) being from 95/5 to 50/50, and a mass ratio {(A)+(b)}/(c) being from 98/2 to 85/15, and a biodegradable film using the biodegradable resin composition.
    Type: Application
    Filed: November 5, 2012
    Publication date: October 9, 2014
    Applicant: SHOWA DENKO K.K.
    Inventors: Yasushi Ichikawa, Hideharu Kimura, Yuuki Tetsuka