Patents by Inventor Gustav Erlemann

Gustav Erlemann 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: 4833259
    Abstract: The novel sunscreen agents which are esters, namely esters of p-methoxy-cinnamic acid with d,1-.alpha.-tocopherol, pantolactone or panthenol.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: May 23, 1989
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Gustav Erlemann, Christian Fizet, Horst Pauling
  • Patent number: 4055634
    Abstract: Compounds represented by the formula(R.sub.1).sub.m Al(OR.sub.2).sub.n Iwherein m and n each are 1 or 2 and the sum of m and n is 3; R.sub.1 is alkyl; R.sub.2 is substituted and unsubstituted alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkanoyl, alkenoyl or aroyl; wherein the substituents on R.sub.2 when R.sub.2 is alkyl, alkenyl, alkanoyl and alkenoyl are one or more of cycloalkyl, cycloalkenyl, alkyl substituted cycloalkenyl, or aryl, alkoxy, cycloalkoxy, cycloalkenyloxy, aryloxy or alkyl and/or alkoxy substituted aryl, alkoxy, cycloalkoxy, cycloalkenyloxy or aryloxy; and wherein the substituents on R.sub.2 when R.sub.2 is cycloalkyl, cycloalkenyl, aryl and aroyl are one or more of alkyl, alkoxy or aryl; and when R.sub.2 is phenyl two adjacent alkyl and/or alkoxy substituents on the phenyl can be joined to form a 5 or 6-membered saturated ring; when m is 2 and n is 1, R.sub.2 can be--(R.sub.3 O).sub.p --Al(R.sub.1).sub.2 (a)wherein R.sub.1 has the significance above and each R.sub.
    Type: Grant
    Filed: February 11, 1975
    Date of Patent: October 25, 1977
    Assignee: Hoffmann-La Roche, Inc.
    Inventors: Wolf Brenner, Gustav Erlemann, Horst Pauling