Patents by Inventor Paul Ritchey

Paul Ritchey 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).

  • Business card display holder
    Patent number: D438906
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: March 13, 2001
    Inventor: Michael Paul Ritchey
  • Filter for water treatment system
    Patent number: D921834
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: June 8, 2021
    Assignee: Access Business Group International LLC
    Inventors: Michael E. Miles, Terry L. Lautzenheiser, Paul Ritchey
  • Filter assembly for water treatment system
    Patent number: D921836
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: June 8, 2021
    Assignee: Access Business Group International LLC
    Inventors: Michael E. Miles, Terry L. Lautzenheiser, Paul Ritchey, Daniel L. Schlenk