Patents Assigned to Kyowa Kagakukogyo Kabushiki Kaisha
  • Method of hydroponic culture
    Patent number: 4209944
    Abstract: A method of hydroponic culture in which plants are cultured while a nutrient solution is continuously circulated within a culture tank. The method comprises determining a scheduled growth curve for a plant to be cultured, programming the flow rate increase and liquid level drop of the nutrient solution by approximate correspondence with the scheduled growth curve, and supplying the nutrient solution under control in accordance with the program.
    Type: Grant
    Filed: September 29, 1978
    Date of Patent: July 1, 1980
    Assignee: Kyowa Kagakukogyo Kabushiki Kaisha
    Inventor: Shigeo Nozawa