Patents by Inventor Miles Atholl Blackwood Sewell

Miles Atholl Blackwood Sewell 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).

  • Dispensing device such as a pipette
    Patent number: 5897034
    Abstract: In order to provide a pipette device which is easier and more accurate to use than those using known pipette fillers, a piston (2), which is preferably flexible, is provided to fit into the pipette bore (6). The plastics piston rod (1) sits conveniently in a guide cap at the mouth of the pipette tube and the piston rod is operated by stroking its upper surface, which is serrated along its length, with a digit; thus dispensing by a positive displacement method.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: April 27, 1999
    Inventor: Miles Atholl Blackwood Sewell