Patents by Inventor Keitarou Fujikura

Keitarou Fujikura 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: 9803223
    Abstract: An objective of the present invention is to provide a microorganism capable of efficiently producing aniline from aminobenzoic acid, and a process for efficiently producing aniline from aminobenzoic acid. To achieve the objective, provided is an aniline-producing transformant constructed by introducing a gene which encodes an enzyme having aminobenzoate decarboxylase activity into a coryneform bacterium as a host, characterized in that the enzyme having aminobenzoate decarboxylase activity is composed of an amino acid sequence which is the same as that represented by SEQ ID NO: 2 except for having a mutation of at least proline (P) at position 309 from the N terminus.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: October 31, 2017
    Assignees: RESEARCH INSTITUTE OF INNOVATIVE TECHNOLOGY FOR THE EARTH, SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Keitarou Fujikura, Kazumi Hiraga, Masayuki Inui, Hideaki Yukawa
  • Publication number: 20160068876
    Abstract: An objective of the present invention is to provide a microorganism capable of efficiently producing aniline from aminobenzoic acid, and a process for efficiently producing aniline from aminobenzoic acid. To achieve the objective, provided is an aniline-producing transformant constructed by introducing a gene which encodes an enzyme having aminobenzoate decarboxylase activity into a coryneform bacterium as a host, characterized in that the enzyme having aminobenzoate decarboxylase activity is composed of an amino acid sequence which is the same as that represented by SEQ ID NO: 2 except for having a mutation of at least proline (P) at position 309 from the N terminus.
    Type: Application
    Filed: March 4, 2014
    Publication date: March 10, 2016
    Applicants: RESEARCH INSTITUTE OF INNOVATIVE TECHNOLOGY FOR THE EARTH, SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Keitarou FUJIKURA, Kazumi HIRAGA, Masayuki INUI, Hideaki YUKAWA
  • Patent number: 9217075
    Abstract: Provided are a rubber composition for a tire which makes it possible to improve the handling stability and fuel economy in a well-balanced manner by a simple method without requiring any chemical reaction process for surface treatment of microfibrillated plant fibers; and a pneumatic tire formed from the rubber composition. The rubber composition for a tire contains: a rubber component; microfibrillated plant fibers; a phenol resin; and a curing agent. It is preferable that the rubber component should include at least one selected from the group consisting of natural rubber, modified natural rubber, synthetic rubber, and modified synthetic rubber, and it is preferable that the microfibrillated plant fibers should be cellulose microfibrils.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: December 22, 2015
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Keitarou Fujikura
  • Patent number: 8664312
    Abstract: The present invention provides a rubber composition for a tire which makes it possible to maintain weather resistance for a long time without damaging the appearance of tires and to reduce the use of petroleum resources, and whose raw materials are easily obtainable; and also provides a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for a tire, including a rubber component and a microalgae-derived natural wax.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: March 4, 2014
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Keitarou Fujikura, Yuka Yokoyama