Patents by Inventor Hisako Nagata

Hisako Nagata 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).

  • Method of manufacturing material for medical and pharmaceutical products from pyroligneous acid
    Patent number: 5024731
    Abstract: A method of manufacturing a material for medical and pharmaceutical products from pyroligneous acid extracted as water content in smoke generated by baking arbor and bark. Pyroligneous acid is heated, and resultant evaporation gas in a temperature range 98.degree. to 103.degree. C. is extracted and liquified by cooling.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: June 18, 1991
    Inventors: Katsumi Nagata, Hisako Nagata