Patents by Inventor Johan Justus Grevers

Johan Justus Grevers 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).

  • Patent number: 8383718
    Abstract: Aqueous strippable paint comprising one or more pigments, a polyether polyurethane binder having anionic stabilizing groups, and a second polyether having at least 20 wt. % of lipophilic parts. The first polyether has an acid number of at least 8, preferably at least 12, and the second polyether has 30-70 wt % of lipophilic parts. The mixing ratio of the first and second polyethers is at least 20:1. The second polyether comprises a lipophilic polyester and/or polyurethane backbone. The polyether polyurethane binder has a Tg of less than ?42° C.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: February 26, 2013
    Assignee: Akzo Nobel Coatings International B.V.
    Inventors: Johan Justus Grevers, Jan Zoer
  • Publication number: 20080139732
    Abstract: Aqueous strippable paint comprising one or more pigments, a polyether polyurethane binder having anionic stabilizing groups, and a second polyether having at least 20 wt. % of lipophilic parts. The first polyether has an acid number of at least 8, preferably at least 12, and the second polyether has 30-70 wt % of lipophilic parts. The mixing ratio of the first and second polyethers is at least 20:1. The second polyether comprises a lipophilic polyester and/or polyurethane backbone. The polyether polyurethane binder has a Tg of less than ?42° C.
    Type: Application
    Filed: April 26, 2005
    Publication date: June 12, 2008
    Applicant: AKZO NOBEL COATINGS INTERNATIONAL B.V.
    Inventors: Johan Justus Grevers, Jan Zoer
  • Publication number: 20030149164
    Abstract: A paint composition for a removable, decorative coat on a non-porous substrate, such as a car, is described. The paint composition is a pigmented lacquer that forms a film where internal cohesion exceeds adhesion to the substrate. The paint composition contains a binder having a glass transition temperature below 19° C., preferably below 13° C. The modulus of elasticity of the paint film after drying is less than 20 MPa, preferably less than 15 MPa.
    Type: Application
    Filed: January 16, 2003
    Publication date: August 7, 2003
    Inventors: Marcel Jan Minnee, Johan Justus Grevers, Harmen Jelke Kielstra