Patents by Inventor Masuo Yukutomi

Masuo Yukutomi 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).

  • Stabilized halogen-containing resin compositions
    Patent number: 4343732
    Abstract: Stabilized halogen-containing resin compositions having improved thermal stability and weather resistance comprising a halogen-containing resin and as a stabilizer, an organic phosphate ester having the general formula: ##STR1## wherein R.sub.1 to R.sub.4 are the same or different organic radicals, A represents hydrocarbon residue of polyhydric compound having 2 to 6 hydroxyl groups, m and n are each an integer of 1 to 3, and m+n is equal to the total number of hydroxyl groups in polyhydric compound.
    Type: Grant
    Filed: October 15, 1980
    Date of Patent: August 10, 1982
    Assignee: Ajinomoto Company Incorporated
    Inventors: Takashi Zama, Koji Takeuchi, Masuo Yukutomi, Fumiyuki Ito