Patents by Inventor Dennis A. Nollen

Dennis A. Nollen 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).

  • Method for forming structural panels having a core with thermoplastic resin facings
    Patent number: 5484500
    Abstract: A process for fabricating panels of a core material with thermoplastic resin facings. The core material is either foam or a honeycomb structure from aramid paper. A belt press machine provides a means for rapid heating and cooling such that the core will not degrade. Since the process is so rapid, aramid fibers can be used to reinforce the resin facings without deleterious decomposition of the fibers under the temperatures used to heat the panels during forming.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: January 16, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Christine M. Kaufmann, Dale L. Murschell, Dennis A. Nollen, Anthony R. Saracino, Joseph D. Trentacosta
  • Method for forming structural panels having a foam core with thermoplastic facings
    Patent number: 5407516
    Abstract: A process for fabricating panels of a core material with thermoplastic resin facings. The core material is either foam or a honeycomb structure from aramid paper. A belt press machine provides a means for rapid heating and cooling such that the core will not degrade. Since the process is so rapid, aramid fibers can be used to reinforce the resin facings without deleterious decomposition of the fibers under the temperatures used to heat the panels during forming.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: April 18, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Christine M. Kaufmann, Dale L. Murschell, Dennis A. Nollen, Anthony R. Saracino, Joseph D. Trentacosta
  • Panel having a core with thermoplastic resin facings
    Patent number: 5328744
    Abstract: A panel comprising a core member in the form of a honeycomb structure of aramid paper and thermoplastic resin sheet material reinforced with a fiber selected from the group consisting of aramid, carbon and glass bonded to both sides of said core member to form facings therefor.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: July 12, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Christine M. Kaufmann, Dale L. Murschell, Dennis A. Nollen, Anthony R. Saracino, Joseph D. Trentacosta
  • Method for forming a structural panel with decorative facing and product thereof
    Patent number: 5238725
    Abstract: A panel having a honeycomb core and thermoplastic resin facings with adhered decorative polyvinyl fluoride overlayer is shaped in a press after being preheated to the softening temperature of the resin and the placing of the heated thermoplastic resin facing in registry with the overlayer which is preheated, thus pressing the two together in the press.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: August 24, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Michael J. Effing, Dennis A. Nollen, Richard K. Okine, Albertus P. Walrave
  • Low density nonwoven aramid sheets
    Patent number: 4888091
    Abstract: Less porous, more abrasion-resistant nonwoven aramid sheets are made by expanding a smooth-surface, dried, wet-laid sheet of fibrids and fibers, which has fused, nonexpandable, densified regions, segmented by spaced interruptions of nonfused regions of the sheet structure, in a pattern which encloses expandable portions of the sheet structure. The re-wet sheet is heated dielectrically to expand the interior of the nondensified portions without substantially roughening or disrupting their surface skin.
    Type: Grant
    Filed: June 1, 1984
    Date of Patent: December 19, 1989
    Assignee: E. I. Du Pont De Nemours and Company
    Inventors: Dennis A. Nollen, Arthur A. Quinn
  • Fire-blocking textile fabric
    Patent number: 4750443
    Abstract: A textile fabric suitable for use as a fire-blocking sheet in aircraft seat cushion comprises three to seven, fastened together nonwoven layers of hydarulically needled batts of aramid staple fibers.
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: June 14, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Michael A. Blaustein, Dennis A. Nollen, Loretta A. G. Page