Patents by Inventor Sadahito Misumi

Sadahito Misumi 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).

  • Aromatic polycarbodiimide and polycarbodiimide sheet
    Patent number: 6248857
    Abstract: An aromatic polycarbodiimide comprising a structure represented by the following formula (1) has excellent low moisture resistance, heat resistance and a low dielectric constant: wherein Q is one selected from the group consisting of —CH2—, m is 0 or 1, A is a divalent organic group having 4 or less carbon atoms, Ph is a phenyl group, X's are a hydrogen atom when Q is and the same or different halogen atoms when Q is —CH2—, and n is an integer of 2 to 300.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: June 19, 2001
    Assignee: Nitto Denko Corporation
    Inventors: Sadahito Misumi, Akiko Matsumura, Amane Mochizuki, Michio Satsuma, Michie Sakamoto
  • Aromatic polycarbodiimide and water repellent sheet made therefrom
    Patent number: 6228972
    Abstract: An aromatic polycarbodiimide comprising a structure represented by the following formula (1) has high solubility in organic solvents, good processability, excellent moisture resistance, and water repellency: wherein n is an integer of 2 to 300, and R represents an organic group.
    Type: Grant
    Filed: October 20, 1999
    Date of Patent: May 8, 2001
    Assignee: Nitto Denko Corporation
    Inventors: Takami Hikita, Michie Sakamoto, Sadahito Misumi, Amane Mochizuki, Takahiro Fukuoka