Patents by Inventor Yoshi Sawada

Yoshi Sawada 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).

  • Method for dyeing strawberry
    Patent number: 5310567
    Abstract: A dyeing agent for dyeing strawberries comprises (a-1) a lac dye; (b) alum; (c) L-ascorbic acid and/or a salt thereof; and (d) a phosphoric acid salt in a weight ratio in an amount of 0.8.about.6.0 parts by weight of component (b), 1.0.about.10.0 parts by weight of component (c) and 2.5.about.23.3 parts by weight of component (d) relative to 1 part by weight of component (a-1), or (a-2) a cochineal dye and a lac dye; (b); (c) and (d) in an amount of 0.8.about.3.6 parts by weight of component (b), 1.0.about.6.0 parts by weight of component (c) and 2.5.about.14 parts by weight of component (d) relative to 1 part by weight of component (a-2). A method for dyeing strawberries comprises the steps of removing the cuticula layer of unripe strawberries, charging the strawberries in a container together with a dyeing solution containing the dyeing agent, degassing the contents of the container, then sealing the container and heating the sealed container.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: May 10, 1994
    Assignee: House Food Industrial Co., Ltd.
    Inventors: Kazuo Nakaji, Yoshi Sawada, Tetsuya Sagoh