Patents by Inventor Kanjiro Ishizaki

Kanjiro Ishizaki 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: 4851155
    Abstract: A solidification processing apparatus for radioactive waste materials comprises a tank for a solidifying agent for solidifying the radioactive waste materials, a waste material vessel connected to the tank for the radioactive waste materials, a pouring control unit for controlling pouring of the solidifying agent into the vessel, and a heating and curing chamber for heating the vessel by an indirect heating unit after pouring the solidifying agent onto the waste materials in the vessel to polymerize and set the solidifying agent, thereby solidifying the radioactive waste materials. With this arrangement, the solidifying agent superior in impregnation is poured into a vessel filled with radioactive waste materials, whose poured amount is controlled by the pouring control unit. After pouring the solidifying agent into the vessel, the vessel is heated indirectly by an indirect heating unit in order to avoid deflagration if the solidifying agent is combustible.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: July 25, 1989
    Assignees: NGK Insulators, Ltd., Chichibu Cement Co., Ltd.
    Inventors: Yutaka Kanagawa, Kanjiro Ishizaki, Mitsuzo Ozawa
  • Patent number: 4826035
    Abstract: A pressure-regulating device for impact-resistant containers used for storage, transportation and disposal of hazardous waste materials, is herein disclosed, which comprises a vent fixed to the lid of said container to keep the gaseous phase pressure inside said container at a positive pressure of 50% or less of the pressure resistance of said container, the vent being columnar and made of an alumina-based sintered ceramic and having a porosity of 50% or less, a pore diameter range of 0.4 to 1.4 .mu. and a length (mm)/cross-sectional area (mm.sup.2) ratio of 2 to 10.
    Type: Grant
    Filed: May 5, 1987
    Date of Patent: May 2, 1989
    Assignee: Chichibu Cement Co. Ltd.
    Inventors: Osamu Suzuki, Kanjiro Ishizaki, Akira Asami, Shizuko Kushida
  • Patent number: 4687614
    Abstract: A high integrity container having a three-layered structure that is suitable as a container for use in storage and disposal of radioactive wastes or industrial wastes can be fabricated by casting a concrete lining as an inner layer on the inner surface of a metallic vessel as an outer layer, reinforcing the concrete lining with a reinforcing material and strengthening the concrete lining with an impregnant, and polymerizing and curing the impregnant layer that is formed as an intermediate layer between said metal drum and the concrete lining.
    Type: Grant
    Filed: May 14, 1985
    Date of Patent: August 18, 1987
    Assignees: Chichibu Cement Co., Ltd., Ozawa Concrete Industry Co., Ltd.
    Inventors: Osamu Suzuki, Kanjiro Ishizaki, Seiichi Ozawa, deceased
  • Patent number: 4594513
    Abstract: A multiplex design container, is herein disclosed, that comprises a metallic vessel as an outer layer, a concrete lining as an inner layer that is formed on the inner surface of the metallic vessel and which is reinforced with a reinforcing material and strengthened with an impregnant, and a polymerized and cured impregnant layer as an intermediate layer that is formed between said metallic vessel and the concrete lining.
    Type: Grant
    Filed: March 7, 1983
    Date of Patent: June 10, 1986
    Assignees: Chichibu Cement Co., Ltd., Ozawa Concrete Industry Co., Ltd.
    Inventors: Osamu Suzuki, Kanjiro Ishizaki, Seiichi Ozawa
  • Patent number: 4404031
    Abstract: A calcium sulfoaluminate clinker having a calcium sulfoaluminate compound 3CaO.3Al.sub.2 O.sub.3. CaSO.sub.4 as a main component, a Portland cement and a blast furnace granulated slag are mixed to produce cements which prevent the formation of efflorescence.
    Type: Grant
    Filed: January 4, 1982
    Date of Patent: September 13, 1983
    Assignee: Chichibu Cement Kabushikikaisha
    Inventors: Giichi Sudoh, Keiichi Minegishi, Kanjiro Ishizaki, Ikuo Uchida