Patents by Inventor Johan G. Modigh

Johan G. Modigh 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).

  • Play pen balls
    Patent number: 5320887
    Abstract: Play pen balls which are blow molded from polyethylene have improved properties through being formed of a mix of linear low density polyethylene and low density polyethylene. The ratio by weight of linear low density to low density polyethylene is preferably in the region of 30%.
    Type: Grant
    Filed: March 4, 1993
    Date of Patent: June 14, 1994
    Assignee: Euro-matic Ltd.
    Inventors: Howard Moss, Johan G. Modigh
  • Date coding play balls
    Patent number: 5038504
    Abstract: A hollow molded article such as a ball of the kind used in play areas where children jump on and swim through a volume of the balls. During molding, date coding is impressed on the balls in a way which enables the older balls to be identified and replaced when necessary. The date coding is provided in two ways, one is to provide an adjustable pin within a part of the mold cavity, and the other is to provide indicia whose positions can be changed by rotation of the air venting plug within the mold.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: August 13, 1991
    Assignee: Euro-Matic Ltd.
    Inventor: Johan G. Modigh