Patents by Inventor Eiji Iwama

Eiji Iwama 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).

  • Cleaning tape and cartridge
    Patent number: 11955148
    Abstract: A cartridge includes a tape-shaped nonwoven fabric, a reel on which the tape-shaped nonwoven fabric is wound, and a case that accommodates the reel. A basis weight of the tape-shaped nonwoven fabric is equal to or less than 25 c/m2 and an average fiber diameter of the tape-shaped nonwoven fabric is equal to or less than 11 ?m.
    Type: Grant
    Filed: December 25, 2020
    Date of Patent: April 9, 2024
    Assignee: SONY GROUP CORPORATION
    Inventors: Eiji Nakashio, Takanobu Iwama
  • Method and apparatus for setting pattern frame and press die in instant-release type molding machine for concrete product
    Patent number: 5002711
    Abstract: An instant-release type concrete molding machine manufactures a concrete product by interposing unitable attachment devices between a press die and a press, placing an attachment unit of a pattern frame within a molding region, introducing the pattern frame and the press die into the molding region in alignment with the press, moving the press and the press die toward each other and uniting them by the aforementioned attachment devices, and fixing the pattern frame by the attachment unit within the molding region.
    Type: Grant
    Filed: July 2, 1985
    Date of Patent: March 26, 1991
    Assignee: Chiyoda Technical & Industrial Company Ltd.
    Inventors: Eiji Iwama, Takateru Hatanaka