Patents by Inventor Donald C. Portfolio

Donald C. Portfolio 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: 6214450
    Abstract: A high solids, water-borne coating comprises a latex polymer, non-film-forming particulates and water. The high solids coating contains up to 90% solids (non-volatiles/volume) and pigment volume concentration (PVC) that can range between about 5% to 95%. The thick-coverage surface coating herein dries at a fast rate, provides excellent through-dry properties as measured by tensile, elongation, and water resistance, and can replace traditional coatings used in multi-coat processes. The coating herein can contain up to about 40% hollow microspheres to yield a dried coating that has up to about 57% PVC and be used as a roof coating that meets a required elongation of at least 200%.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: April 10, 2001
    Assignee: Tremco Incorporated
    Inventors: Frank A. Wickert, Donald C. Portfolio, Steven J. Conway, Gregory P. Bidinger, Stephen R. Peters, Jr.
  • Patent number: 5364894
    Abstract: Emulsions of asphaltic materials, such as asphalt or asphalt blends with polymers, in water using copolymeric anionic emulsifiers are disclosed. The copolymeric anionic emulsifiers use ionizable carboxyl groups as their hydrophilic moiety. The emulsions using these copolymeric emulsifiers are stable, allowing them to be used anywhere where asphalt or modified asphalt is used as a sealant, coating, or binder. These emulsions can also be mixed with polymer latices, pigments, fibers, fillers and other additives to impart particular properties specific to the type of application, i.e., pigmented flexible coating compositions, non-sag sealer and sealant compositions, water borne adhesive compositions, etc., for use in construction and industrial fields. These asphalt emulsions have better freeze-thaw stability, higher solids contents, and wider applicability to polymer modified asphalt compositions than prior art emulsions.
    Type: Grant
    Filed: March 31, 1993
    Date of Patent: November 15, 1994
    Assignee: Tremco, Inc.
    Inventors: Donald C. Portfolio, Fred A. Fensel
  • Patent number: 5254167
    Abstract: An apparatus (10) for applying fluid roof panel adhesive to a substrate includes a holding tank (12) for holding a supply of adhesive vertically above the substrate. The tank is supported by a pair of spaced wheels (14) and has a handle (16) to enable moving the device over the substrate. Openings (32) in a lower wall (30) of the tank enable adhesive to flow onto the substrate. Blocking members (36) associated with each opening are movable in response to the position of a lever (20) to enable or prevent flow of adhesive through the openings. Movement of the apparatus over the substrate provides for controlled deposition of uniformly spaced beads of adhesive suitable for holding roof panels to the substrate.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: October 19, 1993
    Assignee: Tremco, Inc.
    Inventors: Ronald J. Janoski, Richard J. Gibson, Donald C. Portfolio, Gregory J. Rudolph, Todd P. Hadaway
  • Patent number: 5253461
    Abstract: The present invention relates to low slope roofing systems, particularly in commercial (as opposed to residential) roofing applications. More specifically, the fastener-free roofing system of the present invention is directed to the use of a curing adhesive composition which will simply and safely secure roofing insulation to a roofing deck without the need for mechanical fasteners.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: October 19, 1993
    Assignee: Tremco, Inc.
    Inventors: Ronald J. Janoski, Gregory Rudolph, Rick J. Gibson, Donald C. Portfolio
  • Patent number: 4673614
    Abstract: A glass fiber board having a facing adhered to one of two major faces thereof by foamed asphalt adhesive.
    Type: Grant
    Filed: October 3, 1986
    Date of Patent: June 16, 1987
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: James R. Wells, Donald C. Portfolio, Richard B. Beck
  • Patent number: 3998685
    Abstract: An apparatus cuts a saturated sheet into wide and narrow sheets, coats the top and bottom surfaces of the wider sheet with bituminous coating adhesive, shifts the location of the narrower sheet to a position so that the centerlines of each sheet are in alignment, coats the back of the narrower sheet with bituminous adhesive, and laminates the aligned sheets with the narrower sheet adhered to the bottom surface of the wider sheet. The sheets are then cooled, cut into predetermined shapes and packaged. The shaped laminated shingle is also claimed.
    Type: Grant
    Filed: February 18, 1976
    Date of Patent: December 21, 1976
    Assignee: The Celotex Corporation
    Inventors: Edward S. Czyzewski, Donald C. Portfolio, Lee Schuster, Louis M. Wisner