Patents by Inventor Benjamin Tisdale

Benjamin Tisdale 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).

  • SYSTEMS AND METHODS FOR RECYCLING WASTE MATERIAL FROM A PENCIL
    Publication number: 20260249640
    Abstract: A system for recycling waste material from a pencil sharpener includes: a collector being configured for holding the waste material from the pencil sharpener, the waste material including a mixture of pigment shavings and shell shavings; a sizer being configured for reducing the size of the pigment shavings relative to the size of the shell shavings; and a separator being configured for separating the pigment shavings from the shell shavings based on the difference in the size of the pigment shavings relative to the size of the shell shavings.
    Type: Application
    Filed: February 27, 2025
    Publication date: August 27, 2026
    Inventor: Benjamin TISDALE
  • Apparatus and method for the performance of work on submerged articles
    Patent number: 4596493
    Abstract: An apparatus and method for working on a submerged object comprising a work platform having jetting means carried thereby for excavating the floor beneath the body of water and around the object.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: June 24, 1986
    Assignee: Martech International, Inc.
    Inventors: Benjamin Tisdale, John Chanslor, William B. Nicholson