Patents by Inventor Hendrik Laurens Mulder

Hendrik Laurens Mulder 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).

  • Publication number: 20100160199
    Abstract: The present invention relates to metal processing lubricant compositions that are based on polyhydrocarbyl esters of aliphatic polyols, in particular tetrahydrocarbyl esters of pentaerythritol, wherein at least one hydrocarbyl group of the tetrahydrocarbyl ester comprises 6-14 carbon atoms and the other hydrocarbyl groups comprise 6-20 carbon atoms. The compositions are in particular suitable for metal forming operations, e.g. a cold rolling operation, a hot rolling operation or a drawing operation, and metal removing operations, e.g. grinding, milling, cutting, turning and honing.
    Type: Application
    Filed: November 8, 2007
    Publication date: June 24, 2010
    Inventors: Hendrik Laurens Mulder, Jan Baptist Andreas Felix Smeulders, Robert Alexander Herrendorf
  • Patent number: 6548456
    Abstract: Metal working fluids being oil-in-water emulsions comprising alkylated polyvinylpyrrolidones as surfactants for emulsifying the oil in water. The alkylated polyvinyl-pyrrolidones having a molecular weight of about 1,000 up to 50,000 provide emulsions showing a high emulsion stability under varying and severe processing conditions of metal working fluids. Further, advantages of the metal working fluids are the narrow distribution of the droplet size, the high stability against varying temperature, the high stability against varying quality/composition of the make-up water, a high capacity of dispersing metal fines in the metal working fluid as well as excellent film forming characteristics.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: April 15, 2003
    Assignee: Quaker Chemical Corporation
    Inventors: Hendrik Laurens Mulder, Robertus Petrus Jozef Maria Smits, Nicolaas Leonardus Johanna Maria Broekhof
  • Patent number: 6068918
    Abstract: A corrosion inhibiting composition containing a carrier of an oily or waxy type together with active components including at least one corrosion-inhibitor of the azole-type and a co-corrosion-inhibitor, together with optional water repellants or certain alcohols alone or in admixture. The compositions are suitable for protecting from corrosion steel wire or steel cord composed of several steel filaments.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: May 30, 2000
    Assignee: N.V. Bekhaert S.A.
    Inventors: Jan Marcel Van Der Veer, Hendrik Laurens Mulder, Gerardus Johannes Joseph Streefland, Johan Vanbrabant, Frank Deruyck