Patents by Inventor Seiji Ohtomo

Seiji Ohtomo 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: 5721022
    Abstract: Two types of disposable pans made from a paper sheet material by press means are disclosed, particularly designed to prevent its paper configuration from easily deforming and/or to prevent its bottom portion from easy burning or scorching. The one type includes at least two parts, a bowl-like concave part having a bottom portion and an opening divergent part extended upwards from said concave parts. This type necessitates a specific supporting means when used with a cooking oven. The another type additionally includes a flange part interposed between said two parts and can be used without any supporting means. In order to prevent the paper configuration from easy deforming, a plurality of folds are provided on the opening divergent part to have the overlapped width small, and/or a synthetic resin is laminated on said paper sheet material.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: February 24, 1998
    Assignees: Niitaka Kagaku Chemical Industry Co.,Ltd., Honshu Electrical Materials Sales Co., Ltd., Oji Paper Co., Ltd.
    Inventors: Chirio Morita, Kenichi Ito, Yoshiyuki Daido, Yoshinori Tokunaga, Seiji Ohtomo, Takatomo Funamoto, Kaoru Matsui