Patents by Inventor John Martin Hewett

John Martin Hewett 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).

  • Patent number: 7051771
    Abstract: A method and apparatus for introducing powder into a pocket (32) using a dosator (10) having an elongate cavity with an open end and a plunger (12) opposite the open end moveable along the cavity so as to define, between the plunger (12) and the open end, a space of variable volume, the method including, with the plunger (12) defining a volume greater than that of the pocket (32), inserting the open end into a source of powder so as to fill the volume with powder, positioning the open end over the pocket, driving the plunger so as to expel powder from the open end into the pocket and compress it to a predetermined bulk density and removing the open end from the pocket so as to leave the pocket full of powder with the predetermined bulk density.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: May 30, 2006
    Assignee: Pfizer Limited
    Inventors: Andrew John Ede, Peter John Houzego, John Martin Hewett