Patents by Inventor Fritz Wagner

Fritz Wagner 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: 5827717
    Abstract: The invention relates to novel microorganisms, their use and method of producing L-.alpha.-amino acids. In particular, microorganisms DSM 7329 and 7330 are suitable for the production of L-.alpha.-amino acids from corresponding hydantoins or carbamoyl-.alpha.-amino acids. These novel microorganisms are simple to cultivate and make possible high L-.alpha.-amino acid yields from different substrates.
    Type: Grant
    Filed: February 1, 1996
    Date of Patent: October 27, 1998
    Assignee: Degussa Aktiengesellschaft
    Inventors: Fritz Wagner, Dirk Volkel, Andreas Bommarius, Karlheinz Drauz
  • Patent number: 5767255
    Abstract: The present invention relates to glucose- and sophorose-lipids of the formula I ##STR1## in which R.sup.4 is --OH or a group of the formula II, ##STR2## n is an integer from 2 to 26, R.sup.1 and R.sup.2 are, independently of one another, H or ##STR3## R.sup.3 is H or --OH in the case where R.sup.4 is --OH, and is H or --OH or a group of the formula III, ##STR4## in the case where R.sup.4 is a group of the formula II, to a process for obtaining them by fermentation, and to their use as surfactants.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: June 16, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Dieter Wullbrandt, Carlo Giani, Andreas Brakemeier, Siegmund Lang, Fritz Wagner
  • Patent number: 5714355
    Abstract: DSM 9771 is a mutant of DSM 7330 which was obtained under selective pressure. Its enzymatic activity is higher by a factor of 2.3 than that of its parent organism. In the presence of an inducer, this activity may be farther increased by a factor of 2.7. The reaction catalyzed by this microorganism or enzymes therefrom is the enantioselective conversion of a D-5-monosubstituted hydantoin or an L-5-monosubstituted hydantoin or a D-N-carbamoyl amino acid or an L-N-carbamoyl amino acid to a corresponding L-.alpha.-amino acid.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: February 3, 1998
    Assignee: Degussa Aktiengesellschaft
    Inventors: Fritz Wagner, Britta Hantke, Thomas Wagner, Karlheinz Drauz, Andreas Bommarius
  • Patent number: 5516660
    Abstract: The invention relates to novel microorganisms, their use and method of producing L-.alpha.-amino acids. In particular, microorganisms DSM 7329 and 7330 are suitable for the production of L-.alpha.-amino acids from corresponding hydantoins or carbamoyl-.alpha.-amino acids. These novel microorganisms are simple to cultivate and make possible high L-.alpha.-amino acid yields from different substrates.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: May 14, 1996
    Assignee: Degussa Aktiengesellschaft
    Inventors: Fritz Wagner, Dirk Volkel, Andreas Bommarius, Karlheinz Drauz
  • Patent number: 5449786
    Abstract: A method for the racemization of 5-monosubstituted hydantoins, in which a 5-monosubstituted hydantoin is reacted in the presence of an ion exchanger. Anion exchangers at a pH between 6.0 and 13.5 are preferred.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: September 12, 1995
    Assignee: Degussa Aktiengesellschaft
    Inventors: Fritz Wagner, Christoph Syldatk, Markus Pietzsch
  • Patent number: 5128262
    Abstract: The microbial decontamination of soils contaminated with hydrocarbons, in particular with mineral oils, by microbial oxidation is improved by a process in which in addition to supplying the oxygen necessary for degradation, by aeration, soluble nutrients, water and soluble or dispersed biosurfactants as such or mixed with chemical surfactants are metered into the contaminated soils directly or into the removed contaminated soil layers, in one or more batches at time intervals, in an amount such that the formation of toxic intermediates which slow down or block microbial degradation in prevented, the accessibility of mineral oils and their products for the microorganisms is simultaneously increased and, as a result, accelerated, virtually complete mineralization by respiration to CO.sub.2 and H.sub.2 O is effected.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: July 7, 1992
    Assignee: Wintershell AG
    Inventors: Walter Lindoerfer, Kai-Udo Sewe, Axel Oberbremer, Reinhard Mueller-Hurtig, Fritz Wagner
  • Patent number: 5108914
    Abstract: Microorganisms with the ability to cleave enantioselectively 5-substituted hydantoins to L-alpha-amino acids are cultivated in a known manner in a batch preparation. By one-time dosage of anondegradable enzyme inductor of the structure ##STR1## (where R.sub.1, R.sub.2 and X are specifically defined) an increased enzyme activity combined with an increased reaction rate is achieved.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: April 28, 1992
    Assignee: Rutgerswerke Aktiengesellschaft
    Inventors: Fritz Wagner, Christoph Syldalk, Vera Mackowiak, Karsten Krohn, Hartmut Hoke, Albrecht Laufer
  • Patent number: 4921615
    Abstract: Solid particles of various sizes are separated from viscous liquids, for example biomass from liquids of biotechnological processes, by pressure filtration by subjecting the inhomogeneous or homogenized suspension, without or after only a little dilution, to a pressure filtration whereby the solid particles of various sizes are retained according to size in a plurality of, in particular in from 1 to 3, superposed or juxtaposed filter stages on filter layers of various depths and on filter surfaces and are separated from the viscous liquid.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: May 1, 1990
    Assignee: Wintershall AG
    Inventors: Walter Lindoerfer, Kai-Udo Sewe, Wilhelm Jahn-Held, Burkhard Ziebolz, Fritz Wagner
  • Patent number: 4814272
    Abstract: Rhamnolipids with high surface activity are produced micro iologically in high yield per g of dry cell substance using Pseudomonas spec. DSM 2874 in the form of growing, resting and immobilized cell mass in an aqueous medium containing at least one assimilable carbon source at a pH of 6.7 to 7.3 and a temperature of 30.degree. to 37.degree. C. Two new rhamnolipids with only one .beta.-hydroxydecanoic acid residue in the molecule and defined as .alpha.-L-rhamnopyranosyl- and 2-O-.alpha.-L-rhamnopyranosyl-.alpha.-L-rhamnopyranosyl-.beta.-hydroxydeca noic acid with a molecular weight of 334 and 480, respectively, are obtained.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: March 21, 1989
    Assignee: Wintershall AG
    Inventors: Fritz Wagner, Christoph Syldatk, Uwe Matulowic, Hans-Jurgen Hofmann, Kai-Udo Sewe, Walter Lindorfer
  • Patent number: 4720456
    Abstract: Anionic, surface-active trehalose lipids, in which different organic acids are bound to a trehalose molecule by an ester linkage, are prepared by aerobically cultivating trehalose-producing microorganisms, capable of assimilating hydrocarbons, under growth-limiting conditions, but without limiting the oxygen.
    Type: Grant
    Filed: August 20, 1986
    Date of Patent: January 19, 1988
    Assignee: Wintershall AG
    Inventors: Fritz Wagner, Egbert Ristau, Zu-yi Li, Siegmund Lang, Walther Schulz, Hans-Jurgen Hofmann, Kai-Udo Sewe, Walter Lindorfer
  • Patent number: 4663039
    Abstract: Oil polluted water or solid adsorbents are treated with microbially produced glycolipids to separate the oil phase. The treatment may be carried out in an apparatus which can be taken to the site and which comprises a mixing vessel supported by an undercarriage and provided with a storage container to supply the glycolipids, filling means, overflow discharge means and outlet means at its base.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: May 5, 1987
    Assignees: Wintershall Aktiengesellschaft, Gesellschaft fur Biotechnologische Forschung
    Inventors: Walter Lindorfer, Walther Schulz, Fritz Wagner, Wilhelm Jahn-Held
  • Patent number: 4651769
    Abstract: A water valve with a hollow piston axially reciprocable in a cylindrical bore of a surrounding sleeve is provided, for long-term lubrication of the piston, with grease chambers formed as inwardly open peripheral recesses on the inner sleeve surfaces at opposite extremities thereof. The valve is preferably of the single-handle mixing type, the piston being rotatable within the sleeve for selectively connecting a cold-water inlet and/or a hot-water inlet with a common outlet; the region of water flow between these ports is isolated by sealing rings from the two grease chambers.
    Type: Grant
    Filed: March 12, 1986
    Date of Patent: March 24, 1987
    Assignee: Friedrich Grohe Armaturenfabrik GmbH & Co.
    Inventor: Fritz Wagner
  • Patent number: 4535160
    Abstract: The present invention provides a process for obtaining solid cyanuric chloride from the cyanuric chloride vapor obtained by trimerizing cyanogen chloride by separating out in a separation chamber, wherein cyanuric chloride vapor and cold air are introduced into the separation chamber through obliquely upwardly directed inlets in such a manner that an intensive mixing up of the cyanuric chloride vapor with the cold air takes place after emergence from the inlet pipes, the cyanuric chloride-free waste gases are withdrawn from the upper part of the separation chamber and the solid cyanuric chloride is removed from the lower part of the separation chamber.
    Type: Grant
    Filed: July 31, 1984
    Date of Patent: August 13, 1985
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Stefan Elischer, Hans-Gunther Hobel, Robert Merkt, Fritz Wagner
  • Patent number: 4437993
    Abstract: A method and process for preventing the penetration and/or adhesion of hydrocarbons such as crude oil or mineral oil-hydrocarbons into or respectively on objects. The natural and/or constructed objects are sprayed with an aqueous solution and/or dispersion of glycolipids resulting in a thin layer covering the object. A hydrocarbon composition can contact the sprayed object and the resulting hydrocarbon; containing mass can be removed with a pressurized water jet. Various ways exist for degrading or separating the hydrocarbons from the run-off. Preferably the aqueous solution and/or dispersion is treated with ultrasonics before being applied to the surfaces of the objects.
    Type: Grant
    Filed: September 21, 1981
    Date of Patent: March 20, 1984
    Assignees: Wintershall AG, Gesellschaft fur Biotechnologische Forschung mbH
    Inventors: Walter Lindorfer, Fritz Wagner, Walther Schulz
  • Patent number: 4427528
    Abstract: A process for extracting crude oil from tar sands and clay-like materials. This is accomplished by adding a mixture of a trahalose lipid with water to the tar sands and subjecting the mixture to intensive agitation at 60.degree.-90.degree. C. to form a slurry and separating the slurry to recover a crude oil/water mixture.
    Type: Grant
    Filed: February 3, 1981
    Date of Patent: January 24, 1984
    Inventors: Walter Lindorfer, Walther Schulz, Fritz Wagner, Wilhelm Jahn-Held
  • Patent number: 4392892
    Abstract: Oils or petroleum hydrocarbons are separated from solid or solid/liquid mixtures thereof with soil, sand or oil processing residues, by treating these oil-containing mixtures with an aqueous solution or dispersion of a crude extract of microbially produced glycolipids and separating the oil-containing phase from the aqueous phase.
    Type: Grant
    Filed: September 18, 1981
    Date of Patent: July 12, 1983
    Assignees: Wintershall Aktiengesellschaft, Gesellschaft fur Biotechnologische Forschung
    Inventors: Fritz Wagner, Walter Lindorfer, Wilhelm Jahn-Held, Walther Schulz
  • Patent number: 4374735
    Abstract: Oil polluted water or solid adsorbents are treated with microbially produced glycolipids to separate the oil phase. The treatment may be carried out in an apparatus which can be taken to the site and which comprises a mixing vessel supported by an undercarriage and provided with a storage container to supply the glycolipids, filling means, overflow discharge means and outlet means at its base.
    Type: Grant
    Filed: June 11, 1980
    Date of Patent: February 22, 1983
    Assignees: Wintershall Aktiengesellschaft, Gesellschaft fur Biotechnologische Forschung
    Inventors: Walter Lindorfer, Walther Schulz, Fritz Wagner, Wilhelm Jahn-Held
  • Patent number: 4334027
    Abstract: Immobilized enzymatically-active substance is prepared by forming a combination of an enzymatically-active substance and an aqueous polyelectrolyte solution containing a substantial amount of alginate, adding the combination to an aqueous precipitation both containing a source of multivalent ion to form beads of gel containing the enzymatically-active substance, drying the gel beads under controlled conditions to significantly reduce the diameter of the beads and cause hardening of the beads to provide increased mechanical strength, and adding the dried beads to a precipitation both containing a multivalent ion to effect further hardening of the beads. The combination of enzymatically active substance and polyelectrolyte solution may contain an epoxy prepolymer. After further hardening in the polyelectrolyte solution, the beads may be suspended in a buffer solution to dissolve the polyelectrolyte and form porous beads.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: June 8, 1982
    Inventors: Joachim Klein, Fritz Wagner
  • Patent number: 4329325
    Abstract: Process for the production of cyanuric chloride mixtures in which the cyanuric chloride is resistant to agglomeration during storage and handling and is resistant to undesirable hydrolysis, without reducing the reactivity of the cyanuric chloride with respect to organic reactants. The present mixtures contain cyanuric chloride and a minor amount by weight of a finely divided, inert, hydrophobic filler material to form a new, homogeneous, particulate cyanuric chloride composition in which the cyanuric chloride particles are surrounded by the inert filler particles.
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: May 11, 1982
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Heinz-Rudiger Vollbrecht, Fritz Wagner
  • Patent number: 4286660
    Abstract: A process and installation for the flooding of petroleum deposits and oil shale and, more particularly, through the use of dispersions of non-ionogenic, boundary surface-active materials in water as the flooding medium. For the flooding of petroleum-hydrocarbon materials from petroleum deposits and oil shale there can be utilized dispersions of non-ionogenic, boundary surface-active glycolipids, and such preferred structures can be employed which are produced from hydrocarbon mixtures as the C-source. This is effected in two stages with predetermined technological measures. In the first stage, there are initially produced glycolipids through microorganisms with alkane mixtures under predetermined parameters in semi- or continual process cycles and, in the second stage, separated from the cellular material through temperature, pH, osmotic shock. The formed glycolipids can also be separated from the cellular material with unpolarized, organic solvent media.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: September 1, 1981
    Assignees: Gesellschaft fur Biotechnologische Forschung GmbH, Wintershall Aktiengesellschaft
    Inventors: Fritz Wagner, Peter Rapp, Hans Bock, Walter Lindorfer, Walther Schulz, Wilhelm Gebetsberger