Patents by Inventor Toshihisa Hori

Toshihisa Hori 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).

  • Irrigation hose having holes formed on external walls of all flow passages
    Patent number: 5735470
    Abstract: An irrigation hose provides a long life expectancy. The irrigation hose is characterized in that a plurality of flow passages are defined by partitions dividing the inside of the hose which is made of thermoplastic resin; and that each flow passage is provided with irrigation holes formed in a member of the tube portion which is in contact with outside air, that is the outer wall thereof. The irrigation hose can provide different irrigation methods appropriate to the crops or growth stages with just one hose, without exchanging or laying multiple hoses with different irrigation methods. A film 16 is inserted between a film 12 which is made of long thermoplastic resin film with irrigation holes formed throughout at regular pitch and another film 12 which is also made of a long thermoplastic resin film with irrigation holes on both sides.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: April 7, 1998
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Tatsuya Ohe, Toshihisa Hori