Patents by Inventor Norman G. Albrecht

Norman G. Albrecht 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).

  • Water-resistant, viscosity stable, alkaline corrugating adhesive composition
    Patent number: 6375775
    Abstract: A water-resistant, viscosity stable, alkaline curing, starch-based corrugating adhesive composition comprising starch, an alkali material, a ketone-formaldehyde crosslinking additive containing selected sulfite salts and having reduced free-formaldehyde content, and water.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: April 23, 2002
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Michael T. Philbin, Norman G. Albrecht
  • Water-resistant, viscosity stable, alkaline corrugating adhesive composition
    Publication number: 20010009937
    Abstract: A water-resistant, viscosity stable, alkaline curing, starch-based corrugating adhesive composition comprising starch, an alkali material, a ketone-formaldehyde crosslinking additive containing selected sulfite salts and having reduced free-formaldehyde content, and water.
    Type: Application
    Filed: February 27, 2001
    Publication date: July 26, 2001
    Inventors: Michael T. Philbin, Norman G. Albrecht
  • Water-resistant, viscosity stable, alkaline corrugating adhesive composition
    Patent number: 6255369
    Abstract: A water-resistant, viscosity stable, alkaline curing, starch-based corrugating adhesive composition comprising starch, an alkali material, a ketone-formaldehyde crosslinking additive containing selected sulfite salts and having reduced free-formaldehyde content, and water.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: July 3, 2001
    Assignee: National Starch & Chemical Investment Holding Corporation
    Inventors: Michael T. Philbin, Norman G. Albrecht
  • Aldehyde resins with reduced and stabilized free-formaldehyde content
    Patent number: 5627261
    Abstract: A ketone/formaldehyde crosslinking additive having reduced and stabilized free-formaldehyde content and which are useful in starch based alkaline corrugating adhesive compositions are provided by a process wherein the ketone/aldehyde additives are treated with hydrogen peroxide and further with an urea compound.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: May 6, 1997
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Norman G. Albrecht, Michael T. Foran