Patents by Inventor Udo Weinberg

Udo Weinberg 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).

  • Monovinyltin trihalides and process for their preparation
    Patent number: 5817851
    Abstract: Disclosed are monovinyltin trihalides of he general formula (I):(x)(x.sup.1)(x.sup.2)Sn--C(R).dbd.C(R.sup.1)--C(O)--R.sup.2(I)and a process for their preparation from 1,3-diketones, tin(II) halides and halogen acids.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: October 6, 1998
    Assignee: Witco GmbH
    Inventors: Andrea Kapries, Ulrich Stewen, Udo Weinberg
  • Method of preparing trialkyl-tin hydrides
    Patent number: 5288886
    Abstract: The invention concerns a method of preparing trialkyl-tin hydrides by a process that ensures outstanding long-term stability.Bis-[trialkyl-tin]oxides are dissolved in a solvent that mixes only to some extent, if at all, with water and converted with an aqueous solution of sodium borohydride stabilized with a base. The product is obtained by phase separation and optionally by distillation. The trialkyl-tin hydride is obtained almost quantitatively with a yield of more than 95%.
    Type: Grant
    Filed: July 1, 1993
    Date of Patent: February 22, 1994
    Assignee: Witco GmbH
    Inventors: Ralf-Jurgen Becker, Ulrich Stewen, Udo Weinberg
  • Methods for producing diorganodialkoxysilanes
    Patent number: 4958041
    Abstract: In a method for the selective production of diorganodialkoxysilanes of the general formula ##STR1## by reaction of tetraalkoxysilanes of the formula Si(OR.sup.3).sub.4 and monoorganotrialkoxysilanes of the formula R.sup.1 Si(OR.sup.3).sub.3 respectively with Grignard reagents, the desired reaction products are produced in high yield and without undesirable by-products and in high yield.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: September 18, 1990
    Assignee: Schering Aktiengesellschaft
    Inventors: Jurgen Graefe, Wolfram Uzick, Udo Weinberg