Patents by Inventor Andrew C. Markessini

Andrew C. Markessini 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).

  • Substitute for amino and phenolic resins
    Patent number: 4886854
    Abstract: A substitute for amino and phenolic resins is disclosed. It is used in the polycondensation of such resins based on formaldehyde for bonding water penetrable cellulosic particles. The substitute comprises an aqueous solution of(a) either at least one aldehyde together with at least one amide and/or together with at least one phenol, or a non-resinous condensation product of formaldehyde and urea, and(b) a sugar or a sugar derivative or their byproducts or a starch or its degradation products or a mixture thereof, and/or(c) a raw and/or treated lignosulfonate.This substitute also reduces the free formaldehyde of the resulting board without impairing the other properties thereof.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: December 12, 1989
    Assignee: ENIGMA, NV
    Inventors: Efthalia V. Markessini, Andrew C. Markessini
  • Reactive catalyst for amino resins
    Patent number: 4162178
    Abstract: A reactive catalyst for the polycondensation of amino resins used for bonding water-penetrable cellulosic particles is disclosed. Said catalyst, if used in combination with a known catalyst, increases the rate of polycondensation of the resin while at the same time allowing the use of lower amounts of resin solids without imparting any loss in bonding strength. The catalyst comprises a concentrated aqueous solution of a mixture of organic and inorganic components, the organic components being formaldehyde and urea or a non resinous condensation product of formaldehyde and urea, and the inorganic component being a water-soluble alkali metal halide.
    Type: Grant
    Filed: April 6, 1978
    Date of Patent: July 24, 1979
    Assignee: Teukros A.G.
    Inventor: Andrew C. Markessini
  • Reactive catalyst for amino resins
    Patent number: 4161467
    Abstract: A reactive catalyst for the polycondensation of amino resins used for bonding water-penetrable cellulosic particles is disclosed. Said catalyst, if used in combination with a known catalyst, increases the rate of polycondensation of the resin while at the same time allowing the use of lower amounts of resin solids without imparting any loss in bonding strength. The catalyst comprises a concentrated aqueous solution of a mixture of organic and inorganic components, the organic components being formaldehyde and urea or a non resinous condensation product of formaldehyde and urea, and the inorganic component being a water-soluble alkali metal halide.
    Type: Grant
    Filed: October 4, 1977
    Date of Patent: July 17, 1979
    Assignee: Teukros A.G.
    Inventor: Andrew C. Markessini