Patents by Inventor Gerhard Scholz

Gerhard Scholz 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).

  • Publication number: 20090134756
    Abstract: A safety cabinet has a plurality of walls defining a front open side and a pair of doors pivotal about respective horizontally spaced axes on the walls between a closed and an open position. Guides in the cabinet are each associated with a respective one of the doors, and respective links each have a front end connected to a respective one of the doors and a rear end shiftable front-to-back in a respective one of the guides. A connector extends between the rear ends of the links and shifts front-to-back with them. A closer is operatively engageable with the connector, and a spring applies bears on the closer to urge it against the connector for pushing same into the rear end position and closing the doors. An actuator normally holds the closer out of engagement with the connector during movement of same between the front and rear end positions.
    Type: Application
    Filed: November 11, 2008
    Publication date: May 28, 2009
    Inventors: Rudolf Kampf, Andreas Karpf, Rainer Linke, Oliver Schmidt, Gerhard Scholz
  • Publication number: 20090114523
    Abstract: The invention relates to a method for treating vapours and condensates which arise during the production of polycondensates from bisphenols or high-value phenols by esterification and/or transesterification with alkyl or aryl esters of at least bivalent organic or inorganic acids. According to the invention, the treatment is carried out in a plurality of condensates and/or distillation columns which are connected in a step-by-step manner behind each other, each distillation column comprising a connected condensate. The dew point and the pressure in each condensate are adjusted such that in each step, monomers, oligomers or decomposition and transformation products are removed.
    Type: Application
    Filed: February 27, 2006
    Publication date: May 7, 2009
    Inventors: Rudolf Kampf, Andreas Karpf, Rainer Linke, Oliver Schmidt, Gerhard Scholz
  • Patent number: 6616712
    Abstract: Compositions comprising as components A) at least one bisazo compound selected from the group consisting of the compounds of the general formula Ia  and of the general formula Ib  where R1 is C1-C8-alkyl, R2 is C2-C8-alkyl, R3 and R3′ are each C2-C21-alkyl in which up to four CH2 groups of the carbon chain may be replaced by oxygen in ether function, R4 is hydrogen or is R3 (independently of R3), R4′ is hydrogen or is R3′ (independently of R3′), B) at least one solvent in which said component A) is soluble, and optionally C) at least one surface-active substance, are useful as dye penetrants for detecting surface cracks or other defects in workpieces to be tested in this respect.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: September 9, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Karin Heidrun Beck, Christos Vamvakaris, Karl-Heinz Etzbach, Gerhard Scholz, Claudia Kräh
  • Patent number: 6028179
    Abstract: Trisazo dyes of the general formula I ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.4 -alkyl, halogen, nitro, hydroxysulfonyl, sulfamoyl, mono- or di-C.sub.1 -C.sub.4 -alkylsulfamoyl, C.sub.1 --C.sub.4 -alkylsulfonyl or C.sub.1 -C.sub.4 -alkoxysulfonyl,R.sup.2 is hydrogen, halogen, nitro or hydroxysulfonyl, at least one of R.sup.1 and R.sup.2 being nitro,R.sup.3 and R.sup.4 are each independently of the other hydroxyl or amino,R.sup.5 is hydrogen, C.sub.1 -C.sub.4 -alkyl, hydroxysulfonyl, sulfamoyl, mono- or di-C.sub.1 -C.sub.4 -alkylsulfamoyl, C.sub.1 -C.sub.4 -alkylsulfonyl, C.sub.1 -C.sub.4 -alkoxysulfonyl or carboxyl,R.sup.6 is hydrogen or C.sub.1 -C.sub.4 -alkyl,R.sup.7 is hydrogen, C.sub.1 -C.sub.4 -alkyl, hydroxysulfonyl, sulfamoyl, mono- or di-C.sub.1 -C.sub.4 -alkylsulfamoyl, C.sub.1 -C.sub.4 -alkylsulfonyl, C.sub.1 -C.sub.4 -alkoxysulfonyl, SO.sub.2 N(CH.sub.2 COOH).sub.2 or carboxyl,R.sup.8 is hydrogen, C.sub.1 -C.sub.4 -alkyl, hydroxyl, C.sub.1 -C.sub.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: February 22, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerhard Scholz, Gunther Lamm
  • Patent number: 5827332
    Abstract: Azo dyes of the formula ##STR1## where the ring A may be benzofused,n is 0 or 1, and R.sup.1 -R.sup.8 are as defined,as pH-dependent markers for hydrocarbons, hydrocarbons containing the above-mentioned azo dyes, and a method for detecting these azo dyes in hydrocarbons.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: October 27, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Georg Zeidler, Gerhard Scholz, Claudia Krah, Karin Heidrun Beck, Udo Mayer
  • Patent number: 5487770
    Abstract: Method for detecting marked mineral oils by treating the marked mineral oil with an extractant comprising water, a solvent and a base comprises using as marker an azo dye of the formula ##STR1## where ring A may be benzofused,m is from 1 to 4,X.sup.1 is hydrogen, C.sub.1 -C.sub.4 -alkyl, cyano or nitro,X.sup.2 is hydrogen, C.sub.1 -C.sub.4 -alkyl, cyano, nitro, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.16 -alkoxycarbonyl,X.sup.3 is hydrogen, C.sub.1 -C.sub.4 -alkyl, cyano or C.sub.1 -C.sub.16 -alkoxycarbonyl, andX.sup.4 is hydrogen, hydroxyl, substituted or unsubstituted C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.4 -alkoxy, amino, C.sub.1 -C.sub.4 -dialkylamino or substituted or unsubstituted C.sub.1 -C.sub.16 -monoalkylamino,as solvent a partially or completely water-miscible organic solvent, and as base an alkali or alkaline earth metal hydroxide, an alkali metal carbonate or a quaternary ammonium hydroxide, the use of azo dyes as markers for mineral oils, and novel azo dyes.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: January 30, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Dyllick-Brenzinger, Friedrich-Wilhelm Raulfs, Ulrike Schlosser, Karin H. Beck, Gerhard Scholz
  • Patent number: 4519003
    Abstract: A video recorder system including a video recorder having an output and a plurality of operating elements which can be operated by an operator according to a desired mode of operation as outlined in operating instructions for recording a video signal and playing back the video signals via the output. The video recorder also includes means coupled to the output for storing video and audio representations of the operating instructions and for selectively applying the representations to the output. The system additionally includes a television playback device connected to the output of the recorder for receiving and utilizing the representations, in addition to the video signals, for establishing a dialog between the operator and the video recorder for the purpose of operating, programming and monitoring said recorder.
    Type: Grant
    Filed: February 9, 1982
    Date of Patent: May 21, 1985
    Assignee: Licentia Patent-Verwaltungs-GmbH
    Inventor: Gerhard Scholz