Patents by Inventor Frank Ziemer

Frank Ziemer 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).

  • Microkeratome for performing lasik surgery
    Patent number: 5997559
    Abstract: The microkeratome comprises a holder (10) with a suction ring (11) for attachment to the sclera (12) of a patient's eye (13). A suction source (20) is connected to the ring (11). A slide (30) is displaceably mounted on the holder (10) in a linear guide (22). The slide (30) has a plane frontal surface (31) including a transparent plate (32) for contacting the cornea (70) of the eye (13). The plate (32) has concentric circular marks (34) for centering on the eye (13) and for reading the diameter (D) of contact in an initial position of the slide (30). The slide (30) contains a cutting blade (51) with a cutting edge (52) that is parallel to surface (31) and oscillatable in the direction of the edge (52). Two motors (35, 57) are mounted on the slide (30) for moving the slide (30) and oscillating the blade (51).
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: December 7, 1999
    Assignee: Anton Meyer & Co. AG
    Inventor: Frank Ziemer
  • 2-fluoroacrylic acid derivatives, novel mixtures of herbicides and antidotes, and their use
    Patent number: 5972839
    Abstract: The invention relates to novel .alpha.-fluoroacrylic acid derivatives, to active compound/antidote combinations which comprise .alpha.-fluoroacrylic acid derivatives and are outstandingly suitable for use in crops of useful plants, to their use and to methods for protecting crop plants.
    Type: Grant
    Filed: December 17, 1997
    Date of Patent: October 26, 1999
    Assignee: Hoechst Schering AgrEvo GmbH
    Inventors: Frank Ziemer, Lothar Willms, Klaus Bauer, Hermann Bieringer, Christopher Rosinger, Jacques Demassey
  • Mixtures of herbicides and antidotes, (hetero)-aryloxy compounds, their preparation, compositions containing them, and their use
    Patent number: 5698539
    Abstract: The invention relates to crop protection agents which comprise an active substance combination of herbicide and safener. The herbicides are selected from the group comprising the ALS inhibitors (ALS=acetolactate synthase) such as sulfonylureas, imidazolines, triazolopyrimidinesulfonamides, pyrimidyloxypyridinecarboxylic acid derivatives and pyrimidyloxybenzoic acid derivatives. The safeners are compounds of the formula I ##STR1## which are as defined in claim 1, where Z and Y are N or CH, it being possible for H to be replaced by X,X is H, Hal, haloalkyl or -alkoxy, alkyl, alkoxy, alkylthio, NO.sub.2, NH.sub.2, CN, alkylsulfonyl,A is alkylene or alkenylene,B is carboxyl or a derivative of the carboxyl group.The mixtures are mainly suitable for controlling harmful plants in the crops maize and cereals.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 16, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Frank Ziemer, Lothar Willms, Klaus Bauer, Hermann Bieringer
  • 5-chloroquinolin-8-oxyalkanecarboxylic acid derivatives, useful as antidotes for herbicides
    Patent number: 5380852
    Abstract: Disclosed are compounds of the formula (I): ##STR1## The substituents are disclosed in the specification. The compounds are herbicidal safenets. Accordingly, processes for the preparation and use of the compounds of formula (I) are also disclosed.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: January 10, 1995
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Rainer Schutze, Heinz-Josef Loher, Frank Ziemer, Klaus Bauer, Hermann Bieringer