Patents by Inventor Yoshitsugu Eguchi

Yoshitsugu Eguchi 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).

  • Bulk polymerization of vinyl chloride
    Patent number: 4016341
    Abstract: Vinyl chloride monomer, or a mixture thereof with a copolymerizable monomer or monomers, is bulkpolymerized so that the deposition of polymer scale on the inner walls of the polymerization vessel and other surfaces in contact with the monomer or monomers can be greatly reduced by coating them with phosphoric esters, polyphosphoric esters or their alkali metal salts before the polymerization is commenced. Clean-up operations following each polymerization run are much simplified.
    Type: Grant
    Filed: October 23, 1975
    Date of Patent: April 5, 1977
    Assignee: Shin-Etsu Chemical Company Limited
    Inventors: Kinya Ogawa, Kazuhiko Kurimoto, Yoshitsugu Eguchi, Satoshi Kuwata