Patents by Inventor Yohji Tuji

Yohji Tuji 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).

  • Apparatus for treating papermaking feedstock
    Patent number: 8123909
    Abstract: A papermaking raw material processor capable of reforming pulp in papermaking a process using cavitation includes a first pump 5 jets jet liquid and second pump 6 jets suspension containing; e.g., pulp fibers into a processing unit inside which cavitation is generated by generation of a jet stream. Inside processing unit 2, a jet stream generates cavitation to carry out a reforming processing in which ink, or the like, is removed from the fibers by a blast resulting from collapse of cavitation bubbles generated there. The liquid after reforming processing is returned to second tank 4, except for a part of it fed to downstream steps, while the suspension is processed, as circulated between processing unit 2 and second tank 6.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: February 28, 2012
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Isao Onodera, Keigo Watanabe, Shisei Goto, Yohji Tuji, Takeshi Iimori
  • APPARATUS FOR TREATING PAPERMAKING FEEDSTOCK
    Publication number: 20090114360
    Abstract: A papermaking raw material processor capable of reforming pulp in papermaking a process using cavitation includes a first pump 5 jets jet liquid and second pump 6 jets suspension containing; e.g., pulp fibers into a processing unit inside which cavitation is generated by generation of a jet stream. Inside processing unit 2, a jet stream generates cavitation to carry out a reforming processing in which ink, or the like, is removed from the fibers by a blast resulting from collapse of cavitation bubbles generated there. The liquid after reforming processing is returned to second tank 4, except for a part of it fed to downstream steps, while the suspension is processed, as circulated between processing unit 2 and second tank 6.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 7, 2009
    Applicant: NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Isao Onodera, Keigo Watanabe, Shisei Goto, Yohji Tuji, Takeshi Iimori