Patents by Inventor Robert Bugar

Robert Bugar 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: 5108709
    Abstract: The color coded disposable-filter holder 1 of the invention comprises of a first molded pane-like housing part 2 with an intake stub 3 and a second molded pane-like housing part 4 comprising a discharge stub 5. The two housing parts 2, 4 are rigidly joined in pressure-resistant and hermetic manner at their radially outer zones 7 pointing to each other while enclosing a planar filter 6. This disposable-filter holder is provided with a color coding consisting of a dyed plastic in the form of a prefabricated plastic ring or plastic clip 9 present in an annular groove 8 in the radially outer zone of the disposbale-filter holder.
    Type: Grant
    Filed: September 25, 1990
    Date of Patent: April 28, 1992
    Assignee: Schleicher & Schuell GmbH
    Inventors: Robert Bugar, Asok Chakraborty, Herbert Urlaub
  • Patent number: 4986904
    Abstract: A disposable-filter holder comprises a shallow, box-shaped plastic housing of two pieces with intake and discharge stubs, a membrane-type filter being sandwiched between the two housing pieces which are joined together in a gas-tight and pressure-resistant manner. To reliably code the disposable-filter holder according to the filter characteristics, the disposable-filter holder comprises a colored coding plastic enveloping it in the outer radial zone. This color coding extends in at least one clearance in the first and/or in the second housing piece in geometrically locking manner and thereby does not project beyond the outer housing contour. The color coding only characterizes the disposable-filter holder and does not serve any sealing or locking function.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: January 22, 1991
    Assignee: Schleicher & Schuell GmbH
    Inventors: Robert Bugar, Asok Chakraborty, Herbert Urlaub