Patents by Inventor Sakae Ishiwaka

Sakae Ishiwaka 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: 6343555
    Abstract: In an article carrying/keeping device having a pallet for placing an article and four props provided on the pallet in a standing manner, in order to transport any size of article while placing the article on a pallet whose size is suited for the size of the article, coupling members are provided between two props so that the intervals between the props detachably attached to the four corners of the pallet on which the article is placed can be changed freely, and the respective coupling members are coupled with the props 6 via the couplers so that the first and second couplers are fixed/coupled via the coupling members.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: February 5, 2002
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomoaki Arai, Sakae Ishiwaka