Patents by Inventor Ryuji Iwata

Ryuji Iwata 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).

  • Patent number: 5183315
    Abstract: An infant restraining chair for installation in a corner or other compact area of a bathroom, for restraining an infant while the infant's guardian makes use of bathroom facilities. A chair supporting and surrounding a substantial portion of an infant's body is mounted on top of a column having a cross-section of a generally triangular shape. Arcuate seat belt portions of substantially rigid construction are maintained in a body of the chair normally in a position retracted into the chair, but are selectably extendable out of the chair body to encircle and restrain an infant seated in the chair. A retraction arrangement utilizes force from gravity constantly to bias the seat belt portions into a retracted position. A mechanical locking arrangement may be provided for locking the seat belt portions in a restraining position.
    Type: Grant
    Filed: May 14, 1992
    Date of Patent: February 2, 1993
    Assignee: Combi Corporation
    Inventors: Takehiko Takahashi, Ryuji Iwata, Yuji Shimizu