Patents by Inventor Sho Ji Hayasaka

Sho Ji Hayasaka 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).

  • Chitin beads, chitosan beads, process for preparing these beads, carrier comprising said beads, and process for preparing microsporidian spore
    Patent number: 6156330
    Abstract: The present invention relates to chitin beads having a uniform and fine particle size and comprising microsporidian spores whose principal cell wall substance is chitin; chitosan beads comprising N-deacetylated chitin and having a uniform fine particle size; methods for preparing these beads; carriers comprising these beads; and a method for preparing microsporidian spores.Microsporidian spores are proliferated in insect's bodies or cultured cells to obtain chitin beads having the uniform and fine particle size and whose cell wall substance is mainly composed of chitin. The chitin as the major cell wall substance is subjected to N-deacetylation to give chitosan beads. When the insect is a larva of domesticated silkworm, microsporidian spores are proliferated by orally or percutaneously inoculating the spores into the 2nd instar domesticated silkworm larvae in a concentration of 5.times.10.sup.2 to 5.times.10.sup.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: December 5, 2000
    Assignee: Japan as represented by Director General of National Institute of Sericultural and Entomological Sciences Ministry of Agriculture, Forestry and Fisheries
    Inventors: Masuhiro Tsukada, Akira Shirata, Sho Ji Hayasaka