Patents by Inventor Doug E. Ellis

Doug E. Ellis 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).

  • Litter for animals other than domestic cats
    Patent number: 7407610
    Abstract: Particulate absorbent materials having a size and bulk density range that is conducive to provide a litter for animals that do not bury their eliminations. Where the granular material is sufficiently large and dense to not be discharged from a bin containing the granular material. Each granule has a smooth exterior that will not hang on to the hair or hide of the animal discharging their eliminations. Furthers the granules are of sufficient size and weight to not get stuck in the footing of the animal. The preferred characteristics of the material is having a width of 6 mm-12 mm and having an aspect ratio substantially between 1-1 and 1-6 where the granular substance has a bulk density greater than 12 pounds per cubic foot.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: August 5, 2008
    Inventor: Doug E. Ellis
  • Litter for animals other than domestic cats
    Publication number: 20040216688
    Abstract: Particulate absorbent materials having a size and bulk density range that is conducive to provide a litter for animals that do not bury their eliminations. Where the granular material is sufficiently large and dense to not be discharged from a bin containing the granular material. Each granule has a smooth exterior that will not hang on to the hair or hide of the animal discharging their eliminations. Further, the granules are of sufficient size and weight to not get stuck in the footing of the animal. The preferred characteristics of the material is having a width of 6 mm-12 mm and having an aspect ratio substantially between 1-1 and 1-6 where the granular substance has a bulk density greater than 12 pounds per cubic foot.
    Type: Application
    Filed: October 6, 2003
    Publication date: November 4, 2004
    Inventor: Doug E. Ellis
  • Litter for animals other than domestic cats
    Publication number: 20010052326
    Abstract: Particulate absorbent materials having a size and bulk density range that is conducive to provide a litter for animals that do not bury their eliminations. Where the granular material is sufficiently large and dense to not be discharged from a bin containing the granular material. Each granule has a smooth exterior that will not hang on to the hair or hide of the animal discharging their eliminations. Further, the granules are of sufficient size and weight to not get stuck in the footing of the animal. The preferred characteristics of the material is having a width of 6mm-12mm and having an aspect ratio substantially between 1-1 and 1-6 where the granular substance has a bulk density greater than 12 pounds per cubic foot.
    Type: Application
    Filed: March 15, 2001
    Publication date: December 20, 2001
    Inventor: Doug E. Ellis