Patents by Inventor Virginia H. Plein

Virginia H. Plein 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: 7156392
    Abstract: A polyhedral puzzle has basic pieces that connect and form polyhedrons. The present invention serves as a puzzle solved by the geometric relationship between the pieces. The pieces have four triangular members and each member has a primary and a secondary form. The members connect with positioners interlocking with notches on adjacent members. The positioners include slots that allow members to connect at three angles with each other. A primary member connects to a secondary member in an alternating fashion. The members assemble into polyhedrons such as a cube, sphere, cylinder, or combination thereof that lead to sculptures, including humanoid forms, at various scales or buildings at larger scales.
    Type: Grant
    Filed: January 3, 2005
    Date of Patent: January 2, 2007
    Inventor: Virginia H. Plein