Patents by Inventor Franz Fenkl

Franz Fenkl 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).

  • FUSED 3-PHENYLTETRAMIC ACID DERIVATIVES HAVING HERBICIDAL ACTION
    Publication number: 20190119298
    Abstract: The present invention relates to novel herbicidally effective fused 3-phenyltetramic acid derivatives according to the general formula (I) or agrochemically acceptable salts thereof, and to the use of these compounds for controlling weeds and weed grasses in crops of useful plants.
    Type: Application
    Filed: April 6, 2017
    Publication date: April 25, 2019
    Inventors: Franz FENKL, Hendrik HELMKE, Andreas REMBIAK, Alfred ANGERMANN, Stefan LEHR, Reiner FISCHER, Guido BOJACK, Hansjoerg DIETRICH, Elmar GATZWEILER, Christopher Hugh ROSINGER
  • Aromatic compounds, and their use in liquid-crystalline mixtures
    Patent number: 5626791
    Abstract: An aromatic compound of the formula (I)R.sup.1 (--A.sup.1).sub.a (--M.sup.1).sub.b (--A.sup.2).sub.c (--M.sup.2).sub.d --B(--M.sup.3).sub.c (--A.sup.3).sub.f (--M.sup.4).sub.g (--A.sup.4).sub.h --R.sub.2 (I)in whichB is one of the two following aromatic groups: ##STR1## Q.sup.1, Q.sup.2, Q.sup.3 and Q.sup.4 are identical or different and are CH.sub.2, CF.sub.2, N--R.sup.3, S, O or C.dbd.O;P.sup.1, P.sup.2 and P.sup.3 are identical or different and are C--H, C--F or N; andthe remaining symbols and indicies define mesogenic radicals, The compounds are suitable as components of liquid-crystalline mixtures.
    Type: Grant
    Filed: August 2, 1994
    Date of Patent: May 6, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Franz Fenkl, Javier Manero, Hubert Schlosser, Dietmar Jungbauer