Patents by Inventor Hans Georg Schmelzer

Hans Georg Schmelzer 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: 5859163
    Abstract: The present invention relates to coating compositions containinga) aldimines andb) polyisocyanates whichi) contain 2 to 35% by weight of allophanate groups, based on the weight of the polyisocyanates,ii) have a viscosity of less than 3000 mpa.s at 25.degree. C. when measured at a solids content of 100%,iii) are based on the reaction products of aliphatic polyisocyanates with1) 10 to 90 mole percent of monohydroxy compounds and2) 10 to 90 mole percent of polyhydric alcohols, wherein the mole percentages of 1) and 2) add up to 100, and the percentages are based on the total moles of monohydroxy compounds 1) and polyhydric alcohols 2) andiv) contain less than 10 mole percent of urethane groups, based on the total moles of urethane groups obtained from monohydroxy compounds 1) and polyhydric alcohols 2).
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: January 12, 1999
    Assignee: Bayer Corporation
    Inventors: William E. Slack, Edward P. Squiller, Hans Georg Schmelzer
  • Patent number: 5693864
    Abstract: Disclosed herein is a process for preparing an amine terminated polyether comprising reacting a polyether containing a leaving group with a primary amine or ammonia at a temperature of about 70 to 250 degrees Centigrade.
    Type: Grant
    Filed: October 7, 1992
    Date of Patent: December 2, 1997
    Assignee: Bayer Corporation
    Inventors: William E. Slack, Rick L. Adkins, Hans Georg Schmelzer