Patents by Inventor Michael Hanff

Michael Hanff 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).

  • Container for liquids
    Patent number: 4971230
    Abstract: Container (11) for liquids has a spout with an air bleed channel (10) for improving the ease of pouring the liquids. The container has a retractable nozzle, the outlet end of which has a double wall (3,4) defining an annular space. The annular space is open at both ends and communicates with the air bleed channel in both an extended and a retracted position of the nozzle. The air bleed channel communicates with the main body of the container via its hollow handle.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: November 20, 1990
    Assignee: The British Petroleum Company p.l.c.
    Inventors: David C. Clubb, Michael Hanff