Patents Assigned to Rapas Corporation
  • Method for recovering silica from silica-containing plant body using titanium oxide
    Patent number: 10479691
    Abstract: Rice straw and chaff that are discharged as agricultural waste in large amounts are effectively utilized. The present invention has been completed on the basis of the finding that silica can be recovered with high efficiency by bringing heated titanium oxide into contact with a silica-containing plant body.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: November 19, 2019
    Assignee: Rapas Corporation
    Inventors: Keiko Kitamura, Itsushi Kashimoto, Masahiro Nishimura
  • Method for using titanium oxide granules to recover reinforcing material from reinforced plastic
    Patent number: 10279336
    Abstract: Waste treatment and recycling of a carbon fiber-reinforced plastic and a glass fiber-reinforced plastic are difficult owing to their excellent characteristics. The present invention has been completed on the basis of the finding that a reinforcing material can be recovered with high efficiency by bringing heated titanium oxide granules into contact with a reinforced plastic.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: May 7, 2019
    Assignee: RAPAS CORPORATION
    Inventors: Keiko Kitamura, Itsushi Kashimoto, Masahiro Nishimura
  • Method For Recovering Silica From Silica-Containing Plant Body Using Titanium Oxide
    Publication number: 20170113939
    Abstract: Rice straw and chaff that are discharged as agricultural waste in large amounts are effectively utilized. The present invention has been completed on the basis of the finding that silica can be recovered with high efficiency by bringing heated titanium oxide into contact with a silica-containing plant body.
    Type: Application
    Filed: March 31, 2015
    Publication date: April 27, 2017
    Applicant: Rapas Corporation
    Inventors: Keiko Kitamura, Itsushi Kashimoto, Masahiro Nishimura
  • Method For Using Titanium Oxide Granules To Recover Reinforcing Material From Reinforced Plastic
    Publication number: 20170106351
    Abstract: Waste treatment and recycling of a carbon fiber-reinforced plastic and a glass fiber-reinforced plastic are difficult owing to their excellent characteristics. The present invention has been completed on the basis of the finding that a reinforcing material can be recovered with high efficiency by bringing heated titanium oxide granules into contact with a reinforced plastic.
    Type: Application
    Filed: March 25, 2015
    Publication date: April 20, 2017
    Applicant: Rapas Corporation
    Inventors: Keiko Kitamura, Itsushi Kashimoto, Masahiro Nishimura
  • Granular body of titanium oxide having transition metal and/or transition metal oxide supported thereon, and method for decomposing waste plastic/organic material using said granular body
    Patent number: 9079166
    Abstract: An object of the present invention is to provide titanium oxide granules that have a novel structure and have a characteristic of highly efficient decomposing capability, and a method of decomposing plastic and organic waste by using the granules. The present invention has been completed based on the finding that a method of decomposing plastic waste by using titanium oxide granules having a transition metal and/or a transition metal oxide, in particular copper, supported thereon enables decomposition of plastic waste at extremely high efficiency in a low-temperature region for a long period of time as compared to methods of decomposing plastic waste by using the related-art titanium oxide granules.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: July 14, 2015
    Assignees: Sakai Chemical Industry Co., Ltd., Rapas Corporation
    Inventors: Hiromitsu Shimizu, Itsushi Kashimoto