Patents by Inventor Shirou Kojima

Shirou Kojima 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: 6252037
    Abstract: Polyether polyol having the following chemical formula (1): HO—(AO)mZO—(BO)n—H, which is suitable for the manufacture of polyester, polyurethane elastomer and polyurethane paint showing an excellent hydrolysis resistance is disclosed. In this formula, Z is a dimer diol residue; A and B are the same or different alkylene groups having 2-4 carbon atoms; and m and n are the same or different integers of 0 or more where 2≦(m+n)≦40. Also disclosed is a method for the manufacture of mouldable polyester containing the above-mentioned polyether polyol as one of the constituting units.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: June 26, 2001
    Assignee: Unichema Chemie B.V.
    Inventors: Shirou Kojima, Katsunobu Mochizuki
  • Patent number: 4055249
    Abstract: Sticker having an elongated lug outside of a sticking sheet which is formed by a part of a release sheet.In this sticker, a surface of adhesive supported by said sticking sheet is covered by a releasable sheet, which is provided with parting lines extending from a portion under the release sheet to a portion outside of said sheet for forming said lug.Said lug may be used for picking a portion with the fingers when the sticking sheet is stripped off.Said sticker is made in such a manner that parting lines for forming sticking sheets and lugs respectively are made by means of cutting dies provided on opposite sides of material which is held between said dies.
    Type: Grant
    Filed: March 19, 1973
    Date of Patent: October 25, 1977
    Inventor: Shirou Kojima