Patents by Inventor Stephen P. Thomas

Stephen P. Thomas 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).

  • Patent number: 6615765
    Abstract: Disclosed is a pet toilet that is clean, easy to use, odor free, and one that ultimately reduces or eliminates the need for litter or similar absorbent material. It consists of three parts: a relatively deep lower receptacle, a cover, and a relatively shallow tray located beneath the cover and suspended above the bottom of the lower receptacle. The cover will have an upstanding circumferential rim sufficiently high to initially hold a nominal amount of litter and retain the litter against the normal scratching done by an animal using the device. It will also have an opening adjacent one end. This opening will be of a sufficient size to freely permit the passage of animal waste material into the lower receptacle. The tray is of a size that will completely fill the area beneath the opening in the top cover. It can be positioned so that it may be easily slid backwards and forwards beneath or away from the opening in the cover. During a training period the cover and tray are conventionally filled with litter.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: September 9, 2003
    Inventor: Stephen P. Thomas
  • Patent number: 5499611
    Abstract: A shelf for supporting cat litter within a litter box in a spaced relationship relative to a floor of the box. The inventive device includes a perimeter frame having a plurality of spaced slats extending thereacross so as to support litter above potentially toxic deodorant or disinfectant materials positioned beneath the perimeter frame within the box. A locking assembly permits selective movement of the slats relative to the perimeter frame to facilitate ease of cleaning of the device.
    Type: Grant
    Filed: January 25, 1995
    Date of Patent: March 19, 1996
    Inventor: Stephen P. Thomas
  • Patent number: 5414179
    Abstract: A process for processing a cracked feed stream so as to provide a feed stream, having a requisite concentration of isobutylene and butene-1,to a polymerization unit for polymerization of isobutylene.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: May 9, 1995
    Assignee: Phillips Petroleum Company
    Inventors: Harold R. Hunt, Stephen P. Thomas
  • Patent number: 5411516
    Abstract: A method and kit is provided for piercing an ear while allowing conventional earring posts to be interchangeably inserted into and withdrawn from the pierced ear throughout the ear healing process. The kit includes a conventional ear piercing gun with a slightly stronger spring for shooting a plunger toward an ear. A two part piercing stud or post includes a hollow post through which a solid post is inserted. A rubber plug is mounted within the hollow post for frictionally retaining the solid post during the ear piercing process and for frictionally retaining a conventional earring post during the ear healing process. The method for piercing the post includes loading the two part piercing post onto the plunger of the gun, and loading an earring back on an opposite support of the gun. The gun is then positioned upon the ear, and the piercing post is shot through the ear and into the earring back.
    Type: Grant
    Filed: May 26, 1992
    Date of Patent: May 2, 1995
    Inventor: Stephen P. Thomas
  • Patent number: 4225319
    Abstract: A method for supressing carburetor deposit formation of motor fuels containing untreated cat cracked gasoline by blending adsorbent-treated cat cracked gasoline into the motor fuel. Up to about 50 percent by weight of the total composition is adsorbent-treated cat cracked gasoline, but preferably from about 5 to about 25 percent by weight of the total composition is adsorbent-treated cat cracked gasoline. In a preferred embodiment a standard reference fuel capable of providing a predetermined level of carburetor deposit formation is provided by the addition of either adsorbent-treated cat cracked gasoline, untreated cat cracked gasoline, or aromatic amines to a base fuel.
    Type: Grant
    Filed: July 5, 1978
    Date of Patent: September 30, 1980
    Assignee: Phillips Petroleum Company
    Inventor: Stephen P. Thomas
  • Patent number: 4084091
    Abstract: The approximate concentration of a carburetor additive in a motor fuel is determined by a paper chromatographic method.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: April 11, 1978
    Assignee: Phillips Petroleum Company
    Inventor: Stephen P. Thomas