Patents by Inventor Fumitaka Shimokawa

Fumitaka Shimokawa 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).

  • Mold additives for use in continuous casting
    Patent number: 4806163
    Abstract: A mold additive for use in continuous casting, which includes a base material having a chemical composition of CaO--BaO--SiO.sub.2 --F system, and contains 2-15% by weight in total of at least one carbonate of alkali and alkaline earth metals, 2-30% by weight in total of at least one fluoride of alkali and alkaline earth metals and 0.2-10% by weight of carbon, and, if necessary, 2-10% by weight in total of at least one oxide of Fe, Mn and Ni, and has a solidification temperature of not more than 900.degree. C. and a viscosity at 1,300.degree. C. of not more than 3 poises. The base material has a weight ratio of (CaO+BaO)/SiO.sub.2 of 0.6-2.5 and contains not less than 2% by weight of BaO and 2-15% by weight of F.
    Type: Grant
    Filed: November 5, 1987
    Date of Patent: February 21, 1989
    Assignees: Kawasaki Steel Corporation, Sakai Chemical Industriy Co., Ltd.
    Inventors: Hakaru Nakato, Tsutomu Nozaki, Yasuhiro Habu, Hiromu Oka, Tsunehiro Ueda, Takao Koshikawa, Hideaki Kishimoto, Fumitaka Shimokawa
  • Mold additives for use in continuous casting
    Patent number: 4508571
    Abstract: A mold additive for use in the continuous casting is disclosed, which comprises a base material for slag having a chemical composition of CaO--SiO.sub.2 --Al.sub.2 O.sub.3 system, a flux and a carbonaceous aggregate. The mold additive contains 0.5-2.0% by weight of carbon black and 1-4% by weight of activated carbon with an average particle size of not more than 10 .mu.m as the carbonaceous aggregate, and has a bulk density of not more than 0.9 g/cm.sup.3.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: April 2, 1985
    Assignees: Kawasaki Steel Corporation, Sakai Chemical Industry Co., Ltd
    Inventors: Hakaru Nakato, Toshikazu Sakuraya, Yasuhiro Habu, Toshihiko Emi, Masanori Kodama, Takao Koshikawa, Yoshimitsu Yoshida, Fumitaka Shimokawa