Patents by Inventor Lars Evers

Lars Evers 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).

  • Plywood, and a process for preparing plywood
    Patent number: 7531244
    Abstract: The invention relates to plywood, comprising at least two wood veneer layers and at least one adhesive layer, whereby the adhesive layer comprises a resin composition comprising a triazine compound (T), formaldehyde (F) and optionally urea, wherein the molar F/(NH2)2 ratio of the adhesive layer lies between 0.70 and 1.10 and the molar F/T ratio of the adhesive layer lies between 1.0 and 3.5. The invention further relates to a process for the preparation of plywood.
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: May 12, 2009
    Assignee: DSM IP Assets B.V.
    Inventors: Lars Evers, Jozef Maria Johannes Mattheij
  • Oriented strand boards
    Patent number: 7422787
    Abstract: Oriented strand board (OSB), comprising a core layer and two face layers, whereby the face layers comprise an adhesive composition, wherein the adhesive composition in at least one of the face layers comprises a resin composition comprising melamine, formaldehyde, optionally urea and aromatic hydroxyl compounds, wherein the molar ratio of melamine to formaldehyde is 1:0.8-4.0, the molar ratio of melamine to urea is 1:0-2.0 and the molar ratio of melamine to aromatic hydroxyl compounds is 1:0-2.0. In a preferred embodiment, both the face layers and the core layer comprise the said adhesive composition. The OSB's according to the invention can meet the OSB/3 and even the OSB/4 requirements in the EN 300 standards.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: September 9, 2008
    Assignees: DSM IP Assets B.V., Dynea Oy
    Inventors: Lars Evers, Rodolphus Antonius Theodorus Maria Benthem, Van, Jozef Maria Johannes Mattheij, Jose Guadalupe Gomez Bueso, Jacobus Adriaan Antonius Vermeulen
  • ORIENTED STRAND BOARDS
    Publication number: 20080160303
    Abstract: Oriented strand board (OSB), comprising a core layer and two face layers, whereby the face layers comprise an adhesive composition, wherein the adhesive composition in at least one of the face layers comprises a resin composition comprising melamine, formaldehyde, optionally urea and aromatic hydroxyl compounds, wherein the molar ratio of melamine to formaldehyde is 1:0.84.0, the molar ratio of melamine to urea is 1:0-2.0 and the molar ratio of melamine to aromatic hydroxyl compounds is 1:0-2.0. In a preferred embodiment, both the face layers and the core layer comprise the said adhesive composition. The OSB's according to the invention can meet the OSB/3 and even the OSB/4 requirements in the EN 300 standards.
    Type: Application
    Filed: March 3, 2008
    Publication date: July 3, 2008
    Inventors: Lars EVERS, Rudolphus Antonius Theodorus Maria Benthem, Van, Jozef Maria Johannes Mattheij, Jose Guadalupe Gomez Bueso, Jacobus Adriaan Antonius Vermeulen
  • Plywood, And A Process For Preparing Plywood
    Publication number: 20070218306
    Abstract: The invention relates to plywood, comprising at least two wood veneer layers and at least one adhesive layer, whereby the adhesive layer comprises a resin composition comprising a triazine compound (T), formaldehyde (F) and optionally urea, wherein the molar F/(NH2)2 ratio of the adhesive layer lies between 0.70 and 1.10 and the molar F/T ratio of the adhesive layer lies between 1.0 and 3.5. The invention further relates to a process for the preparation of plywood.
    Type: Application
    Filed: December 9, 2004
    Publication date: September 20, 2007
    Applicant: DSM IP ASSETS B.V.
    Inventors: Lars Evers, Josef Maria Mattheij
  • Oriented strand boards
    Publication number: 20060157183
    Abstract: Oriented strand board (OSB), comprising a core layer and two face layers, whereby the face layers comprise an adhesive composition, wherein the adhesive composition in at least one of the face layers comprises a resin composition comprising melamine, formaldehyde, optionally urea and aromatic hydroxyl compounds, wherein the molar ratio of melamine to formaldehyde is 1:0.8-4.0, the molar ratio of melamine to urea is 1:0-2.0 and the molar ratio of melamine to aromatic hydroxyl compounds is 1:0-2.0. In a preferred embodiment, both the face layers and the core layer comprise the said adhesive composition. The OSB's according to the invention can meet the OSB/3 and even the OSB/4 requirements in the EN 300 standards.
    Type: Application
    Filed: June 28, 2004
    Publication date: July 20, 2006
    Inventors: Lars Evers, Rudolphus Antonius Theodorus Benthem Van, Jozef Mattheij, Jose Gomez Bueso, Jacobus Adriaan Vermeulen