Patents by Inventor Robert L. Alvis

Robert L. Alvis 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).

  • Movable toilet seat assembly
    Patent number: 4185335
    Abstract: The disclosure relates to a movable toilet seat assembly for the infirm which allows a user to manually control seat position from an essentially standing position to a seated position and vice versa with minimum stress on the user's legs and joints.
    Type: Grant
    Filed: May 24, 1978
    Date of Patent: January 29, 1980
    Assignee: Medical Aids Research Foundation
    Inventor: Robert L. Alvis
  • Well drilling apparatus and method
    Patent number: 4030557
    Abstract: Well drilling rates may be increased by impelling projectiles to fracture rock formations and drilling with rock drill bits through the projectile fractured rock.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: June 21, 1977
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: Robert L. Alvis, Melvin M. Newsom