Patents by Inventor Stanley Hasegawa

Stanley Hasegawa 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).

  • Building block system
    Patent number: 4608799
    Abstract: Hollow blocks formed of corrugated cardboard, for example, have top edge openings receiving inverted U-shaped connectors for joining successive blocks together in a row or course and end slots together with top center slots receiving T-shaped connectors that include locking means for joining stacked rows or courses together.
    Type: Grant
    Filed: August 16, 1985
    Date of Patent: September 2, 1986
    Inventor: Stanley Hasegawa