Patents by Inventor Haruo Nishina

Haruo Nishina 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).

  • Process for recovering zinc
    Patent number: 4323391
    Abstract: Zinc is advantageously recovered by mixing a zinc-containing material with a bituminous coal etc. to form briquettes, dry distilling the said briquettes to form coked lumps and electrothermically distilling the said coked lumps in an electrothermic distillation furnace.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: April 6, 1982
    Assignee: Toho Aen Kabushiki Kaisha
    Inventors: Tsuneo Honda, Haruo Nishina, Shuichi Uehara