Patents by Inventor Carol Parker

Carol Parker 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).

  • Collapsible, spirally fluted container
    Patent number: 3946903
    Abstract: A container made of flexible, resilient material such as polyethylene has a wall formed into plural spirally extending flutes. The bottom of the container has an integrally formed inwardly directed cup-shaped protuberance for substantially completely expelling the contents when the container is collapsed. The spiral angle of the flutes is preferably 30.degree. and the flutes are inwardly directed and unobstructed at the top dispensing opening.
    Type: Grant
    Filed: June 25, 1974
    Date of Patent: March 30, 1976
    Inventor: Carol Parker