Patents by Inventor Rudolf Lehmann
Rudolf Lehmann 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).
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Patent number: 6276446Abstract: A recooling system for cooling water from a condenser of a steam power plant includes a number of cooling modules, each of which can be fed through a water-feed shaft allocated thereto. The water-feed shafts are connected to one another like communicating tubes and are connected through a common main cooling-water line to the condenser. Such a recooling system can be installed and operated in an especially simple manner.Type: GrantFiled: June 11, 1998Date of Patent: August 21, 2001Assignee: Siemens AktiengesellschaftInventors: Gerhard Kratz, Rudolf Lehmann, Siegfried Münch
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Patent number: 5968488Abstract: A deodorant composition containing: (a) a cationic biopolymer; (b) an aluminum chlorohydrate; and (c) an esterase inhibitor.Type: GrantFiled: April 28, 1998Date of Patent: October 19, 1999Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Rolf Wachter, Rudolf Lehmann, Claudia Panzer
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Patent number: 5538738Abstract: The invention relates to the use of free radical-reactive cross-linker components based on olefinically unsaturated esters of lower hydroxycarboxylic acids and/or oligomers thereof for modifying depot materials, and especially retard systems, which contain medicinal and/or biological valuable materials in admixture with a carrier material in a sustained release form. The cross-linkers are present as polymer compounds in the application form of the retard system and may be provided in the retard system or depot material to be applied in a largely homogeneous as well as in a non-uniform distribution. The invention also relates to retard systems which contain medicinal and/or biological valuable materials and have been based on oligomer and/or polymer compounds of lower hydroxycarboxylic acids as carrier materials providing a sustained release of the active substance.Type: GrantFiled: October 18, 1993Date of Patent: July 23, 1996Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Wolfgang Ritter, Rudolf Lehmann, Rainer Sorg
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Patent number: 5403505Abstract: An aqueous cleaning and disinfecting concentrate comprisingA) at lease one reaction product ofa) an N-substituted propylene diamine of formula IR.sup.1 --NH--(CH.sub.2).sub.3 --NH.sub.2 (I)in which R.sup.1 is a C.sub.8 -C.sub.18 alkyl group andb) glutamic acid or a glutamic acid derivative of formula IIR.sub.2 --O--CO--(CH.sub.2).sub.2 --CH(NH.sub.2)--COOH (II)in which R.sup.2 is hydrogen or a C.sub.1 -C.sub.4 alkyl group, wherein the said reaction product is optionally ethoxylated and/or propoxylated, and is optionally in the form of a salt with an organic or inorganic acid;B) at least one of the following antimicrobially active compounds:i) a quaternary ammonium compound of formula III ##STR1## in which R.sup.3 and R.sup.4 independently of one another represent alkyl radicals containing 1 to 3 carbon atoms or benzyl radicals, or halogenated or alkylated benzyl radicals containing 6 to 22 carbon atoms, and X.sup.Type: GrantFiled: November 12, 1992Date of Patent: April 4, 1995Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Klaus Hachmann, Karlheinz Disch, Klaus-Peter Bansemir, Hubert Schwidden, Stephanie Kaupp, Carsten Friese, Rudolf Lehmann, Hans T. Leinen
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Patent number: 5292500Abstract: Toothpastes containing 10 to 60% by weight of a polishing agent, 2 to 20% by weight of a humectant, 0.5 to 5% by weight water-soluble consistency regulators, 0.02 to 0.5% by weight antibacterial biguanides and 1 to 5% by weight other additives from the group consisting of surfactants, flavoring oils and sweeteners show particularly high biguanide availability if they contain predominantly .alpha.-aluminium oxide trihydrate as the polishing agent, nonionic polysaccharide derivatives as the consistency regulators, an alkyl glycoside and, optionally, a nonionic solubilizer for the flavoring oil as surfactants and L-aspartyl-L-phenyl alanine methyl ester as sweetener.Type: GrantFiled: February 25, 1992Date of Patent: March 8, 1994Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Peter Wuelknitz, Rudolf Lehmann, Walter Ploeger, Franz Foerg
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Patent number: 5273674Abstract: 2,5-diacyloxy-2,5-dihydrofurans corresponding to formula (I) ##STR1## wherein R is a C.sub.1 -C.sub.8 alkyl radical or a phenyl radical are useful as activators for inorganic per compounds in oxidizing, cleaning or disinfecting solutions.Type: GrantFiled: November 17, 1992Date of Patent: December 28, 1993Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Beatrix Kottwitz, Thomas Merz, Rudolf Lehmann
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Patent number: 5191854Abstract: The boat has a flap (1) forming a part of its V- or spoon-shaped bow and being unfoldable therefrom. This flap is supported by means of projections (9a,9b) arranged on both of its sides on swivel joints (13a,13b) set back into the inside of the boat with respect to the inner wall of the bow. Upon pivoting the flap (1) out of the bow opening (15), the flap is swung away from the bow wall portion with the uncovering of an interspace (2) between the flap and the bow wall portion which latter lies underneath the bow opening (15). The flap outside wall can be urged underneath the surface of the water and can be fixed in its position. The flap (1) is designed as a buoyant member, and when serving as a working or recreational platform, etc., can be folded back into the bow of the boat in such a way that the hydro- and aerodynamic properties as well as the esthetic appearance of the bow are not impaired.Type: GrantFiled: January 7, 1991Date of Patent: March 9, 1993Assignee: Marcel LehmannInventors: Hans-Rudolf Lehmann, Marcel Lehmann
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Patent number: 5182101Abstract: Toothpastes which contain 10-60 wt. % of polishing agents, 2-20 wt. % of humectants, 0.5-5 wt. % of water-soluble consistency regulators and 0.05-0.5 wt. % of antimicrobial biguanides, as well as 1-5 wt. % of other additives from the group of surface-active substances, aromatic oils, and sweeteners, have a particularly high biguanide availability if the polishing agent consists mainly of calcium carbonate, the consistency regulators are non-ionic polysaccharide derivatives and the surface-active substances are cationic surfactants with a linear alkyl group containing 12-18 carbon atoms and one or two tertiary amino groups or quaternary ammonium groups. Optionally a non-ionogenic solubilizer for the aromatic oil may also be present in the toothpastes.Type: GrantFiled: February 20, 1992Date of Patent: January 26, 1993Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Peter Wuelknitz, Rudolf Lehmann, Hans-Juergen Klueppel
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Patent number: 5109019Abstract: Antimicrobial mixtures containing quaternary ammonium compounds and iodopropynyloxy ethanol carbamate compounds in a ratio by weight of 0.3:1 to 9:1.Type: GrantFiled: July 6, 1989Date of Patent: April 28, 1992Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Rudolf Lehmann, Hans T. Leinen, Reinhard Orth, Hans-Juergen Mueller
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Patent number: 5102874Abstract: Antimicrobial mixtures contain quaternary ammonium compounds and quaternary phosphonium compounds in a ratio by weight of from 1:9 to 9:1.Type: GrantFiled: August 20, 1990Date of Patent: April 7, 1992Assignee: Ecolab Inc.Inventors: Karl Lintner, Reinhard Orth, Rudolf Lehmann, Hans-Juergen Mueller
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Patent number: 4945177Abstract: Novel 2,2-dibromo-3-oxonitriles of Formula I,R--CO--CBr.sub.2 --CN (I)in which R represents in each case a possibly substituted or unsubstituted aliphatic, cycloaliphatic, aromatic or heterocyclic group, with the exception of a phenyl group substituted with 1 to 3 chlorine atoms, can be obtained in that a carboxylic acid ester of Formula IIR--CO--OR' (II)in which R has the significance indicated for Formula I, and in which R' represents a straight chain or branched alkyl group with 1 to 4 carbon atoms, is reacted with acetonitrile in the presence of a strong base, the 3-oxonitrile produced is isolated from the reaction mixture and reacted in a solvent inert with respect to bromine and in the presence of a hydrogen bromide acceptor, possibly under cooling, and the 2,2-dibromo-3-oxonitrile of Formula I obtained is isolated from the reaction mixture.Type: GrantFiled: December 23, 1986Date of Patent: July 31, 1990Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Horst-Juergen Krause, Hans-Theo Leinen, Rudolf Lehmann
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Patent number: 4923685Abstract: Aqueous homogeneous preparations containing 0.0025 to 0.1% by weight antimicrobial biguanide compounds, 0.005 to 0.2% by weight of an alkyl glycoside, 0.01 to 0.3% by weight of a water-insoluble aromatic oil, 0.01 to 0.3% by weight of a solubilizer from the group consisting of ethoxylated fatty acid glycerides, ethoxylated fatty acid sorbitan partial esters or fatty acid partial esters of glycerol or sorbitan ethoxylates show high activity despite the low concentration of antimicrobial biguanide compounds. The clear solubility is obtained without ethanol or with only very small contents of up to 15% by weight of ethanol. The preparations are particularly suitable as mouthwashes.Type: GrantFiled: July 28, 1988Date of Patent: May 8, 1990Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Peter Wuelknitz, Rudolf Lehmann, Walter Ploeger, Karlheinz Hill, Franz Forg
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Patent number: 4920100Abstract: Alkyl glycosides in admixture with bactericidally active alcohols or carboxylic acids in, e.g. aqueous treatment solutions, for potentiating the microbicidal effect thereof.Type: GrantFiled: July 9, 1987Date of Patent: April 24, 1990Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Rudolf Lehmann, Klaus Hachmann, Manfred Biermann, Harald Schnegelberger
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Patent number: 4900721Abstract: Liquid, aqueous disinfectants based on alcohol and hydrogen peroxide which contain one or more C.sub.2 -C.sub.8 alcohols, hydrogen peroxide or a compound which forms peroxide in aqueous phase, one or more carboxylic acids, one or more microbicidally active nitrogen-containing organic compounds, one or more microbicidally active phenolic compounds, and optionally other active substances and/or auxiliaries typically present in disinfectants, and to the use of such disinfectants for disinfection of the skin and mucous membrane.Type: GrantFiled: June 9, 1987Date of Patent: February 13, 1990Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Klaus Bansemir, Karlheinz Disch, Klaus Hachmann, Rudolf Lehmann, Manfred Biermann, Harald Schnegelberger
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Patent number: 4820507Abstract: Oral and dental hygiene preparations containing quaternary ammonium compounds of the formula ##STR1## wherein R.sup.1 is an n-alkyl group, preferably containing from 8 to 12 carbon atoms, R.sup.2 is hydrogen, a CH.sub.3 -group or a CH.sub.2 OH-group and R.sup.3 is a CH.sub.3 -group or a group of the formula --CH.sub.2 --CH(OH)--R.sup.2, A is an inorganic or organic acid anion and n is the basicity of the anion. The quaternary ammonium compounds of formula I can have a plaque inhibiting effect and show only slight antimicrobial activity. R.sup.1 is preferably an n-decyl group, R.sup.2 is hydrogen and R.sup.3 is a CH.sub.3 -group or a 2-hydroxyethyl group. The oral and dent al hygiene preparations also preferably contain fluorides and/or organophosphonates as the anion A.Type: GrantFiled: March 2, 1987Date of Patent: April 11, 1989Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Hans-Juergen Klueppel, Walter Ploeger, Horst Rutzen, Rudolf Lehmann
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Patent number: 4795832Abstract: N-octyl salicylic acid amide and N-decyl salicylic acid amide, a process for their production from salicylic acid methyl ester and a primary amine, and use of the amides in antimicrobial compositions.Type: GrantFiled: October 2, 1987Date of Patent: January 3, 1989Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Hans T. Leinen, Rudolf Lehmann, Hans-Juergen Klueppel
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Patent number: 4748158Abstract: Alkyl glycosides are used to greatly increase the microbicidal activity of biguanide compounds, such as chlorhexidine salts. The alkyl glycoside/biguanide agents have a particular utility in teeth cleaning preparations due to their improved microbicidal activity against gram-positive bacteria.Type: GrantFiled: December 6, 1985Date of Patent: May 31, 1988Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Manfred Biermann, Rudolf Lehmann, Harald Schnegelberger, Walter Ploeger, Hans-Juergen Klueppel, Karl-Heinz Schmid
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Patent number: 4652585Abstract: Compounds which are the reaction products of a C.sub.12-14 -alkyl N-substituted 1,3-diaminopropane and glutamic acid or its 5-methyl ester, optionally alkoxylated, and optionally their salts, are useful as antimicrobial agents.Type: GrantFiled: March 15, 1985Date of Patent: March 24, 1987Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Werner Gerhardt, Herbert Fischer, Rudolf Lehmann, Karlheinz Disch, Hans T. Leinen
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Patent number: 4492802Abstract: Process for the manufacture of quaternary ammonium compounds by reacting a compound having a terminal epoxide troup with a salt of a tertiary amine in the presence of a quaternary ammonium compound as catalyst.Type: GrantFiled: April 19, 1982Date of Patent: January 8, 1985Assignees: Henkel Kommanditgesellschaft auf Aktien, Degussa AktiengesellschaftInventors: Horst Rutzen, Peter Nikolaus, Martin Bischoff, Rudolf Lehmann
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Patent number: 4474807Abstract: This invention is directed to novel antimicrobial agents. More particularly, this invention is directed to 2-(3-iodo-2-propynyloxy)-ethyl carbamates of the formula ##STR1## wherein R is hydrogen, linear or branched alkyl of from 1 to 12 carbon atoms, cycloalkyl of from 4 to 8 carbon atoms, aryl, substituted aryl, aralkyl, or arylsulfonyl;R.sup.1 and R.sup.2, which may be the same or different, each are hydrogen, linear or branched alkyl or alkenyl of from 1 to 6 carbon atoms, or cycloalkyl of from 5 to 7 carbon atoms, or R.sup.1 and R.sup.2, taken together, represent --(CH.sub.2).sub.m --, in which m is an integer of from 4 to 6; andR.sup.3, R.sup.4, R.sup.5, and R.sup.6, which may be the same or different, each represent hydrogen, alkyl of from 1 to 4 carbon atoms, or aryl, or CCl.sub.3, or R.sup.3 and R.sup.5 or R.sup.4 and R.sup.6, taken together, represent --(CH.sub.2).sub.n --, in which n is an integer of from 3 to 5,as well as a process for their preparation and their use as antimicrobial agents.Type: GrantFiled: September 29, 1982Date of Patent: October 2, 1984Assignees: Henkel Kommandigesellschaft auf Aktien, Montedison S.p.A.Inventors: Werner Gerhardt, Rudolf Lehmann