Patents by Inventor John H. Hoffman

John H. Hoffman 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).

  • Black powder - gun bore, cartridge, and parts cleaning solution
    Publication number: 20020004470
    Abstract: This invention relates to a cleaning and lubricating solution for guns, gun bores, cartridges, and gun parts, and more especially for black powder guns, gun bores, cartridges, and gun parts. The solution is used to clean dirt and debris from the bores and other parts of black powder firearms and accessories. The solution cleans the bore and the residual material forms a protective coating or film of a light lubricating oil.
    Type: Application
    Filed: April 30, 2001
    Publication date: January 10, 2002
    Inventors: Melvin Wright, John H. Hoffman
  • Black powder gun barrel bore, cartridge, and parts cleaning solution
    Patent number: 6225271
    Abstract: This invention relates to a cleaning and lubricating solution for guns, gun bores, cartridges, and gun parts, and more especially for black powder guns, gun bores, cartridges, and gun parts. The solution is used to clean dirt and debris from the bores and other parts of black powder firearms and accessories. The solution cleans the bore and the residual material forms a protective coating or film of a light lubricating oil.
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: May 1, 2001
    Assignee: Hoffman & Wright LLC
    Inventors: Melvin Wright, Jr., John H. Hoffman