Patents by Inventor Harald Pfaller

Harald Pfaller 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).

  • Carbonate containing mineral fillers more particulary for use as matting agents
    Patent number: 5634968
    Abstract: Carbonate containing mineral fillers, and more particularly natural and/or precipitated calcium carbonates, characterized by the following grain size distribution:______________________________________ <61 .mu.m: 100% <56 .mu.m: 95-100% <40 .mu.m: 90-100% <20 .mu.m: 48-95% <10 .mu.m: 15-52% <5 .mu.m: 9-28% <1 .mu.m: 0-10% d.sub.50 : 9.6-20.5 .mu.m ______________________________________may with advantage be employed as mineral fillers, preferably as matting agents and in a more especially preferred fashion for aqueous paint systems.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: June 3, 1997
    Assignee: Pluess-Staufer AG
    Inventors: Harald Pfaller, Dieter Strauch