Patents by Inventor Hidejiro Shibayama

Hidejiro Shibayama 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).

  • Agent for preventing growth of weeds in rice fields
    Patent number: 6121196
    Abstract: A herbicidal composition for preventing the growth of weeds in rice fields which comprises active carbon in a powder form dispersed in water in the presence of a starch or a derivative of starch. The herbicidal composition prevents the growth of weeds on the surface of soil covered with water in a rice field by decreasing the amount of light which passes through the water covering the soil. The herbicidal composition does not cause any problem regarding food sanitation, maintains the effect for a long period of time with stability by repeated applications, is inexpensive and can be used advantageously.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: September 19, 2000
    Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.
    Inventors: Hidejiro Shibayama, Tadamitsu Nakamura, Takuji Kihara, Shinichi Ogawa, Fujiko Yamashita