Patents by Inventor William Pierson Hart

William Pierson Hart 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).

  • Method of making a molded glass article
    Patent number: 8938991
    Abstract: A method of making a glass container comprising providing a mold defining an article having a base at a bottom of the mold cavity where the mold cavity comprises an undercut portion that defines a recess in the mold cavity; introducing molten glass to the mold; cooling the glass to cause the glass to shrink a sufficient amount that the protuberance recedes from the recess; and removing the container from the mold in a linear direction.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: January 27, 2015
    Assignee: Rubbermaid Incorporated
    Inventors: Vignesh Danabalan, William Pierson Hart, Michael A. Zarkis, James Dondero
  • STACKABLE GLASS CONTAINER
    Publication number: 20130082065
    Abstract: A glass container system comprises a glass container comprising a base defining a bottom of the container and a sidewall formed integrally with the base to define an interior space. A protuberance is formed integrally with the base where the protuberance extending beyond a side wall of the base. A lid is dimensioned such that the protuberance engages the lid such that the lid may be releasably secured to the base. A glass container prepared by a process comprising the steps of providing a mold defining a container having a base at a bottom of the mold cavity where the mold cavity comprises an undercut portion that defines a recess in the mold cavity; introducing molten glass to the mold; cooling the glass to cause the glass to shrink a sufficient amount that the protuberance recedes from the recess; and removing the container from the mold in a linear direction.
    Type: Application
    Filed: October 4, 2011
    Publication date: April 4, 2013
    Applicant: Rubbermaid Incorporated
    Inventors: Vignesh Danabalan, James Dondero, William Pierson Hart, Michael A. Zarkis
  • METHOD OF MAKING A MOLDED GLASS ARTICLE
    Publication number: 20130081427
    Abstract: A method of making a glass container comprising providing a mold defining an article having a base at a bottom of the mold cavity where the mold cavity comprises an undercut portion that defines a recess in the mold cavity; introducing molten glass to the mold; cooling the glass to cause the glass to shrink a sufficient amount that the protuberance recedes from the recess; and removing the container from the mold in a linear direction.
    Type: Application
    Filed: October 4, 2011
    Publication date: April 4, 2013
    Applicant: Rubbermaid Incorporated
    Inventors: Vignesh Danabalan, William Pierson Hart, Michael A. Zarkis