Patents by Inventor Sadaoki Kanada

Sadaoki Kanada 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).

  • Water treatment agent and water treatment method for a boiler
    Patent number: 5169563
    Abstract: A water treatment agent for boilers which comprises as active ingredients a compound which can release aliphatic hydroxycarboxylic acid ions in water and a polyamine represented by the following formula (I) or an acid addition product thereof:H.sub.2 H(CH.sub.2 CH.sub.2 NH).sub.n H (I)(wherein n denotes an integer of 2 to 5), and a water treatment method for pure water boilers or soft boilers using the above active ingredients to prevent corrosion of the ferrous metal in the water system of the pure water boilers or soft water boilers.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: December 8, 1992
    Assignee: Katayama Chemical Inc.
    Inventors: Sakae Katayama, deceased, Sadaoki Kanada, Kazuo Marugame, Hiroshi Asai
  • Corrosion inhibitor
    Patent number: 4512552
    Abstract: A corrosion inhibitor for ferrous metals comprising four different components of (a) an inorganic acid component (such as molybdate or tungstate), (b) an aliphatic hydroxycarboxylic or aliphatic dicarboxylic acid or its salt (such as citric acid, gluconic acid or succinic acid), (c) an inorganic heavy metal compound (such as zinc chloride or stannous chloride) and (d) a water soluble polymer component having a molecular weight of 500-100,000 (such as acylic homo or copolymer), which is especially advantageous for use in water recycling system.
    Type: Grant
    Filed: November 16, 1982
    Date of Patent: April 23, 1985
    Assignee: Katayama Chemical Works Co., Ltd.
    Inventors: Sakae Katayama, Tadahiko Asano, Kazuo Marugame, Sadaoki Kanada, Yoshinari Kawasaki
  • Gel product for destroying harmful marine organisms and method of applying the same
    Patent number: 4154818
    Abstract: New gel product for exterminating harmful marine organisms. Comprises (a) about 1 to 25% by weight of a natural high molecular weight compound capable of forming a gel in water, (b) about 5 to 30% by weight of an agent for exterminating harmful marine organisms, (c) about 1 to 25% by weight of at least one compound selected from the group consisting of a water soluble synthetic linear polymer, an inorganic substance, a surfactant, an organic solvent, a gel-modifier, and mixtures thereof, and (d) water.
    Type: Grant
    Filed: June 9, 1977
    Date of Patent: May 15, 1979
    Assignee: Katayama Chemical Works Co., Ltd.
    Inventors: Sadaoki Kanada, Kunio Nishmura, Toru Yasunaga, Sakae Katayama
  • Method and apparatus for treating waste water on ships
    Patent number: 4071445
    Abstract: The present invention relates to a method and apparatus for treating waste water on ships, and more particularly to a method and apparatus for treating waste water on ships in a closed system.
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: January 31, 1978
    Assignees: Daicel, Ltd., Katayama Chemical Works Co., Ltd.
    Inventors: Sakae Katayama, Sadaoki Kanada, Michitake Kamata, Yasuhiro Sakaguchi, Katsumi Kojima