Patents by Inventor Mitsuaki Funada

Mitsuaki Funada 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 for isolating low molecular weight polymer
    Patent number: 4143085
    Abstract: A method for isolating a low molecular weight polymer from a solution of a low molecular weight polymer having a viscosity of 5 to 100,000 cps at 30.degree. C. and an inactivated catalyst in a hydrophobic organic solvent, which comprises mixing an acidic, alkaline or neutral water or a mixture of the water and a water-soluble organic solvent with the solution containing the low molecular weight polymer in the presence of an amphoteric, cationic or nonionic surfactant or a nonionic or cationic high molecular weight flocculating agent, whereby the separation of the organic layer and the aqueous layer is significantly improved.
    Type: Grant
    Filed: July 13, 1977
    Date of Patent: March 6, 1979
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Mitsuaki Funada, Kazuo Hayatsu, Takanobu Noguchi