Patents by Inventor Lewis W. Eckert

Lewis W. Eckert 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 of producing acoustical fiberboard
    Patent number: 4190492
    Abstract: An improved method for producing acoustical fiberboard, which method comprises adding agglomerate articles formed from an aqueous composition comprising fiberboard dust, a glactomannan gum or glactomannan gum derivative, and a crosslinking agent to an aqueous fiberboard slurry, is disclosed. The resulting acoustical fiberboard exhibits excellent sound absorption.
    Type: Grant
    Filed: December 21, 1977
    Date of Patent: February 26, 1980
    Assignee: Armstrong Cork Company
    Inventors: Lewis W. Eckert, Olivia D. Stewart
  • Composites of metal-modified urea-melamine-formaldehyde resins and fillers
    Patent number: 4128524
    Abstract: A composite molded product comprising a pressure molded and cured product of(a) expanded perlite particles; and(b) a metal-modified urea-melamine-formaldehyde resin; optionally containing an inorganic or organic fiber with or without a filler, and a method for producing the same.
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: December 5, 1978
    Assignee: Armstrong Cork Company
    Inventors: David L. Barnett, Peter A. Christie, Lewis W. Eckert
  • Ceiling panel attachment clip
    Patent number: 4117642
    Abstract: The invention is directed to a clip structure for fastening a specific type of ceiling panel to a specific type of support structure. Both the support structure and ceiling panel have flanges and the clip spans the two flanges to fasten them together.
    Type: Grant
    Filed: July 29, 1977
    Date of Patent: October 3, 1978
    Assignee: Armstrong Cork Company
    Inventors: Lewis W. Eckert, Harold W. Nikolaus, James C. Ollinger