Patents by Inventor Wolfram Radig

Wolfram Radig 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).

  • Metal-free dithiophosphoric acid derivatives
    Patent number: 5412140
    Abstract: Alkyl glycidol ether/dithiophosphoric acid addition products corresponding to the following general formula:[R.sup.1 ]O[C(H)(H)][C(H)C(H)(H)(OH)(R.sup.4)] (I)in whichR.sup.4 =[(R.sup.2 O)(R.sup.3 O)]P(S)S,R.sup.1 . . . R.sup.3 =alkyl, aryl,a process for the production of the adducts from the corresponding dithiophosphoric acids and glycidol ethers and the use of the addition products as lubricant additives in lubricants based on mineral oils or native oils.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: May 2, 1995
    Assignee: Rhein Chemie Rheinau GmbH
    Inventors: Thomas Dimmig, Gunter Jager, Thomas Petri, Wolfram Radig, Gunther Schilling, Jurgen Braun, Volker Schafer