Patents by Inventor Kenneth Michael Larson

Kenneth Michael Larson 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).

  • Lift-assisted litter box system
    Patent number: 8230810
    Abstract: A litter box device for use by pets. The device includes at least two litter boxes arranged as stacked drawers held in a housing. The upper drawer is accessible to a pet through an entry to the housing. The bottom of each drawer has a screen and a slidably removable drawer bottom. Removal of the slidably removable drawer bottom allows the contents of the drawer to pass into the underlying drawer. After pets excrete waste into the litter in the top box, the loose litter is separated from the waste clumps by sliding the removable drawer bottom from the top drawer, allowing loose litter granules to flow down through a screened opening into the underlying drawer. The top drawer will retain the waste clumps on its screen within the upper drawer, the screen positioned proximate to the slidably removable drawer bottom. The waste clumps may then be removed from the drawer and screen. The lower drawer containing the filtered litter can be guided up into the top position.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: July 31, 2012
    Inventors: Craig Mynatt, Kenneth Michael Larson
  • LIFT-ASSISTED LITTER BOX SYSTEM
    Publication number: 20110259275
    Abstract: A litter box device for use by pets. The device includes at least two litter boxes arranged as stacked drawers held in a housing. The upper drawer is accessible to a pet through an entry to the housing. The bottom of each drawer has a screen and a slidably removable drawer bottom. Removal of the slidably removable drawer bottom allows the contents of the drawer to pass into the underlying drawer. After pets excrete waste into the litter in the top box, the loose litter is separated from the waste clumps by sliding the removable drawer bottom from the top drawer, allowing loose litter granules to flow down through a screened opening into the underlying drawer. The top drawer will retain the waste clumps on its screen within the upper drawer, the screen positioned proximate to the slidably removable drawer bottom. The waste clumps may then be removed from the drawer and screen. The lower drawer containing the filtered litter can be guided up into the top position.
    Type: Application
    Filed: April 22, 2010
    Publication date: October 27, 2011
    Inventors: Craig Mynatt, Kenneth Michael Larson
  • Vapor phase catalytic chlorination of ?-picoline
    Patent number: 7345177
    Abstract: 2-Chloro-5-trichloromethylpyridine is obtained by chlorinating ?-picoline in the vapor phase using a Mordenite zeolite or a supported palladium catalyst.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: March 18, 2008
    Assignee: Dow AgroSciences LLC
    Inventors: Kent Douglas Campbell, Dana Alan Livingston, Hawk Suewah Wan, Kenneth Michael Larson, Brian John Schoeman, Steven Roy Lakso
  • Preparation of 3,6-dichloro-2-trichloromethylpyridine by vapor phase chlorination of 6-chloro-2-trichloromethylpyridine
    Patent number: 6794513
    Abstract: A mixture containing 5,6-dichloro-2-trichloromethylpyridine and 3,6-dichloro-2-trichloromethylpyridine enriched in 3,6-dichloro-2-trichloro-methylpyridine is obtained by chlorinating 6-chloro-2-trichloromethylpyridine in the vapor phase using a Type L zeolite catalyst.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: September 21, 2004
    Assignee: Dow AgroSciences LLC
    Inventors: Dana Alan Livingston, Hawk Suewah Wan, Kenneth Michael Larson, Brian John Schoeman
  • PREPARATION OF 3,6-DICHLORO-2-TRICHLOROMETHYLPYRIDINE BY VAPOR PHASE CHLORINATION OF 6-CHLORO-2-TRICHLOROMETHYLPYRIDINE
    Publication number: 20040176607
    Abstract: A mixture containing 5,6-dichloro-2-trichloromethylpyridine and 3,6-dichloro-2-trichloromethylpyridine enriched in 3,6-dichloro-2-trichloromethylpyridine is obtained by chlorinating 6-chloro-2-trichloromethylpyridine in the vapor phase using a Type L zeolite catalyst.
    Type: Application
    Filed: March 4, 2004
    Publication date: September 9, 2004
    Inventors: Dana Alan Livingston, Hawk Suewah Wan, Kenneth Michael Larson, Brian John Schoeman