Patents by Inventor Michel J. de Ruijter

Michel J. de Ruijter 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).

  • Anti-snaking swellable water-stops
    Patent number: 9091058
    Abstract: The invention provides an aqueously-swellable water stop having an elongate body formed by shaping or extruding a composition mixture comprising water swelling fillers and/or polymers (e.g. Bentonite, super absorbent polymers, hydrophilic polymers), at least one elastomer or polymer, and preferably at least one plasticizer, the composition mixture when formed into an elongate water stop body having a Shore A hardness (durometer) of less than 35 and more preferably in the range of 5-35 (measured at 21° C.). The water stop body has at least one major face and a layer of pressure-sensitive adhesive attached to the face for bonding to a concrete substrate.
    Type: Grant
    Filed: December 7, 2013
    Date of Patent: July 28, 2015
    Inventors: Peter J. Kempenaers, Pascal A. Geudens, Michel J. de Ruijter
  • Anti-Snaking Swellable Water-Stops
    Publication number: 20150113894
    Abstract: The invention provides an aqueously-swellable water stop having an elongate body formed by shaping or extruding a composition mixture comprising water swelling fillers and/or polymers (e.g. Bentonite, super absorbent polymers, hydrophilic polymers), at least one elastomer or polymer, and preferably at least one plasticizer, the composition mixture when formed into an elongate water stop body having a Shore A hardness (durometer) of less than 35 and more preferably in the range of 5-35 (measured at 21° C.). The water stop body has at least one major face and a layer of pressure-sensitive adhesive attached to the face for bonding to a concrete substrate.
    Type: Application
    Filed: December 7, 2013
    Publication date: April 30, 2015
    Applicant: W. R. Grace & Co.-Conn.
    Inventors: Peter J. Kempenaers, Pascal A. Geudens, Michel J. de Ruijter