Patents by Inventor Hartmut Mau

Hartmut Mau 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).

  • Asymmetrical diesters of ortho-phosphoric acid useful as corrosion inhibitors
    Patent number: 4465516
    Abstract: Asymmetrical phosphate esters of formula I ##STR1## in which R is C.sub.1-20 alkyl,R.sub.1 is C.sub.1-20 alkyl,R.sub.2 is hydrogen or methylx is 1-15and M is hydrogen, an alkali metal ion or an equivalent of an alkali earth metal or zinc ionare effective inhibitors of oxidative corrosion of metals in the presence of electrolytes. They may be used alone or in conjunction with further additives, and are preferably dissolved in the electrolyte with which the metal is to come in contact.
    Type: Grant
    Filed: March 10, 1983
    Date of Patent: August 14, 1984
    Assignee: Sandoz Ltd.
    Inventors: Bernard Danner, Hartmut Mau, Hans Stettler
  • Asymmetrical diesters of orthophosphoric acid useful as corrosion inhibitors
    Patent number: 4389259
    Abstract: Asymmetrical phosphate esters of formula I ##STR1## in which R is C.sub.1-20 alkyl,R.sub.1 is C.sub.1-20 alkyl,R.sub.2 is hydrogen or methylx is 1-15 andM is hydrogen, an alkali metal ion or an equivalent of an alkali earth metal or zinc ionare effective inhibitors of oxidative corrosion of metals in the presence of electrolytes. They may be used alone or in conjunction with further additives, and are preferably dissolved in the electrolyte with which the metal is to come in contact.
    Type: Grant
    Filed: April 24, 1981
    Date of Patent: June 21, 1983
    Assignee: Sandoz Ltd.
    Inventors: Bernard Danner, Hartmut Mau, Hans Stettler