Patents by Inventor Nelson Cooke

Nelson Cooke 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).

  • Disposable column cartridge
    Patent number: 4636316
    Abstract: A liquid chromatographic analytical column includes an end cap that is abutted with an end edge of a holder body when the analytical column is fully inserted into a bore in the holder body. An end cap mounted to a precolumn is compressed between the end cap of the analytical column and an end nut connected to a holder union. The holder union has a central passage that admits the precolumn therethrough and a stop that engages a ferrule placed around the precolumn to compress the ferrule against the analytical column end cap to form a seal.
    Type: Grant
    Filed: September 4, 1985
    Date of Patent: January 13, 1987
    Assignee: Beckman Instruments, Inc.
    Inventors: John Harris, Nelson Cooke, Kristine Olsen