Patents by Inventor Zachary S. Drennan

Zachary S. Drennan 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).

  • Green smoking tips and methods of manufacture
    Patent number: 11812778
    Abstract: Green smoking tips and methods of mass manufacturing of green smoking tips comprising extracting volatile compounds and carbonizing hollow plant stem cuts.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: November 14, 2023
    Inventor: Zachary S. Drennan
  • Green smoking tips and methods of manufacture
    Patent number: 10660361
    Abstract: Green smoking tips and methods of mass manufacturing of green smoking tips comprising extracting volatile compounds and carbonizing hollow plant stem cuts.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: May 26, 2020
    Inventor: Zachary S. Drennan