Patents by Inventor Wolfgang Ludwig

Wolfgang Ludwig 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: 20020033045
    Abstract: Method for the testing of an exhaust gas recirculation system of an internal combustion engine returning exhaust gas at an exhaust gas recirculation rate from the exhaust line to the intake line, in which a specific adjustment of the exhaust gas recirculation rate (&Dgr; EGR) is set, the NOx concentration in the exhaust gas is measured and in the absence of a differential concentration varying as a function of the adjustment of the exhaust gas recirculation rate a defect of the exhaust gas recirculation system is diagnosed.
    Type: Application
    Filed: August 13, 2001
    Publication date: March 21, 2002
    Inventors: Wolfgang Ludwig, Corinna Pfleger, Hong Zhang
  • Publication number: 20020006457
    Abstract: The water holding capacity of meat is improved by agitating the meat at an alleged temperature with the processing solution and by maintaining the alleged temperature with precision. A preferred temperature is in the range of 45° to 60° F. and the agitation is preferably a massaging action after injection of the liquid into the meat.
    Type: Application
    Filed: March 14, 2001
    Publication date: January 17, 2002
    Inventor: Wolfgang Ludwig
  • Publication number: 20010032457
    Abstract: Values for a raw NOx concentration of an internal combustion engine, that are stored on an operating point basis, are read out from a characteristic map and an adaptation of variations in concentration takes place on the basis of an output signal of an NOx sensor provided downstream of a NOx storage catalyst, either by modification of a reduction factor, which serves for the calculation of a corrected raw NOx concentration from the raw NOx concentration, or by direct correction of the values read out from the characteristic map for the raw NOx concentration with a raw concentration correction factor.
    Type: Application
    Filed: May 9, 2001
    Publication date: October 25, 2001
    Inventors: Wolfgang Ludwig, Corinna Pfleger, Hong Zhang
  • Patent number: 6240696
    Abstract: An anchor rod to be received in a bore filled with mortar mass including a connection region (2, 22, 32) having a plurality of axially arranged one after another, conical enlargements (4, 24, 34) a diameter of which increases in a setting direction and which are provided with circumferential sections (5, 25, 35) radially spaced from a longitudinal axis of the anchor rod (1, 21, 31) by a greatest distance, having a radius (r) smaller by from about 0.1 mm to about 1.5 mm then a half of a nominal diameter of the anchoring region receiving bore, and extending, respectively, in a circumferential direction over an angle of up to 300°.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: June 5, 2001
    Assignee: Hilti Aktiengesellschaft
    Inventors: Wolfgang Ludwig, Erich Leibhard
  • Patent number: 6225094
    Abstract: For the genus-specific or/and species-specific detection of bacteria in a sample liquid, bacterial RNA is hybridized with a primer which is complementary to a genus-specific or species-specific region of the RNA of particular bacteria or to a highly conserved region of the RNA of bacteria in general, but which is not complementary at its 3′ end to the RNA of bacteria of another genus or species, the primer is elongated in the presence of a suitable polymerase and the four deoxyribonucleotides, if desired, with a concurrent or subsequent labelling of the elongation product and an elongation product formed is hybridized with a genus-specific or species-specific oligonucleotide after denaturation and the hybridization is detected by means of the oligonucleotide label.
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: May 1, 2001
    Assignee: Roche Diagnostics GmbH
    Inventors: Wolfgang Ludwig, Karl-Heinz Schleifer, Christoph Kessler, Ruediger Rueger, Anne Stern
  • Patent number: 6113959
    Abstract: Meat products such as poultry parts are injected with a base marinade or a base marinade massaged into the meat, the base marinade contains less than the total amount of seasoning desired in the meat product. The injected meat product is then placed upon a packaging material such as a tray previously coated with a seasoning layer and the meat product is then coated with another seasoning layer before being sealed in the packaging material so that the balance of the seasoning is supplied from the seasoning layers.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: September 5, 2000
    Assignee: WTI, Inc.
    Inventor: Wolfgang Ludwig
  • Patent number: 6050157
    Abstract: A setting tool for anchor rods of attachment anchors, which have a rear end section (P) having a polygonal cross-section, the setting tool including a housing (2) provided with an insertion end receivable in a chuck of a percussion rotary drill and a rod receptacle (5) provided at an end of the housing opposite, in an axial direction (A), to the insertion end (5), the rod receptacle (5) having an axially extending inner surface (6) provided with at least two ribs (7) projecting therefrom and extending in the axial direction (A), with the ribs (7) defining an inscribed cylinder (Z) having a diameter (x) larger by from about 0.05 mm to about 0.5 mm than a diameter (y) of a circle (K) inscribed in a polygonal cross-section of the rear and section (P) of the anchor rod.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: April 18, 2000
    Assignee: Hilti Aktiengesellschaft
    Inventors: Wolfgang Ludwig, Erich Leibhard, Norbert Daam
  • Patent number: 6029417
    Abstract: An anchor rod for an attachment anchor including a trailing region (1) provided with a load application element (2), and an anchoring region (4) submergeable in a hardenable inorganic and/or organic mortar mass and having a mixing section formed of a head portion (5) provided at its free end (6) with a cutter (7) extending substantially transverse to the axis (A) of the anchor rod, a transporting section (10) adjoining the mixing section, and a compression section (13) adjoining the transporting section (10), with the head portion (5) having a region (53), the outer diameter (c) of which is larger than the largest diameter (d) of the transporting and compression sections (10,13) of the anchoring region (4), and provided with a mortar mass transporting arrangement (9).
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: February 29, 2000
    Assignee: Hilti Aktiengesellschaft
    Inventors: Erich Leibhard, Wolfgang Ludwig
  • Patent number: 5972398
    Abstract: An inline macerating method and apparatus for treating pieces of meat with a liquid wherein the pieces of meat are first injected with the liquid and then drawn by suction through a duct in which the piece of meat is incised by cutting edges extending into the path of the pieces of meat as they traverse the duct. The pieces of meat then pass into a paddle massager or tumbler in which the liquid is massaged into the tissue.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: October 26, 1999
    Assignee: WTI, Inc.
    Inventors: Ralf Ludwig, Wolfgang Ludwig
  • Patent number: 5684190
    Abstract: A method of recovering a desired amino acid such as L-lysine from an aqueous solution containing the desired amino acid and impurities, includes the steps of passing the solution over a primary cation exchange resin to adsorb the desired amino acid onto the resin at a pH lower than the isoelectric point of the desired amino acid, eluting the desired amino acid from the resin using a suitable eluent having a pH higher than the isoelectric point of the desired amino acid to produce a first solution, passing the first solution over a secondary cation exchange resin to adsorb one or more of the impurities and to produce a second solution leaving the resin, collecting the second solution until the ratio of the concentrations of a selected impurity to the desired amino acid reaches a chosen value to produce a third solution which contains a lower level of impurities than the first solution, and recovering the desired amino acid from the third solution.
    Type: Grant
    Filed: May 9, 1996
    Date of Patent: November 4, 1997
    Assignee: AECI Limited
    Inventors: Wolfgang Ludwig Fechter, Jonathan Hugh Dienst, John Frank Le Patourel
  • Patent number: 5669199
    Abstract: A member (1) for insertion into a borehole (9) in a receiving material (10) has an axially extending generally cylindrical hollow body (2) closed at its leading end (4) and open at its trailing end (5) and into which a mortar mass and anchor member can be inserted. The hollow body (2) has a sieve-like mesh wall. At least one circumferentially extending strip (8) of a compressible elastic open pore material is secured on the outside surface of the hollow body (2) for cleaning the surface of the borehole while the member is inserted into the borehole.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: September 23, 1997
    Assignee: Hilti Aktiengesellschaft
    Inventors: Wolfgang Ludwig, Erich Leibhard
  • Patent number: 5505972
    Abstract: Poultry parts are differentially injected with the same or different marinates, especially to provide a greater proportion of the marinating solution in the breast portions than in the leg and other portions. The differential injection is accomplished by providing a greater flow cross section of the needles in the breast portion than in the leg and other portions for greater numbers of needles at the breast portion than at the leg and other portions, and/or by pumping the solutions at a greater rate to the breast portions than to the leg and other portions.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: April 9, 1996
    Assignee: WTI, Inc.
    Inventor: Wolfgang Ludwig
  • Patent number: 5469056
    Abstract: At least five planar gradiometers on at least three non-parallel surfaces are used to determine five, linearly independent components of a gradient tensor of a magnetic field.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: November 21, 1995
    Assignee: Dornier GmbH
    Inventors: Wolfgang Eschner, Wolfgang Ludwig
  • Patent number: 5449524
    Abstract: Poultry carcasses, especially for rotisserie roasting, are differentially injected with the same or different marinates, especially to provide a greater proportion of the marinating solution in the breast portions than in the leg and other portions. The differential injection is accomplished by providing a greater flow cross section of the needles ill the breast portion than in the leg and other portion for greater numbers of needles at the breast portion than at the leg an other portion, and/or by pumping the solutions at a greater rate to the breast portions than to the leg and other portions.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: September 12, 1995
    Assignee: WTI, Inc.
    Inventor: Wolfgang Ludwig
  • Patent number: 5436017
    Abstract: A method of inhibiting bacterial growth in meat in which sodium citrate buffered with citric acid is introduced into the meat to a sodium citrate content of 1 to 7%, and preferably about 1 to 1.3%.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: July 25, 1995
    Assignees: WTI Inc., Myac Fleischtechnologie GmbH
    Inventors: Wolfgang Ludwig, Siddik Iyimen
  • Patent number: 5405630
    Abstract: As water binding to pieces of meat in a paddle massager increases, the resistance to rotation of the shaft, controlled by a frequency controller causes the speed to progressively drop as the torque input is maintained constant at a percentage of total available torque, thereby improving the water bonding without damage to the muscle tissue.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: April 11, 1995
    Assignee: WTI, Inc.
    Inventor: Wolfgang Ludwig
  • Patent number: 5362507
    Abstract: The chemical effects of rigor mortis requiring aging of fowl meat following fresh-slaughter and before packing and freezing are eliminated by treating the meat with a diphosphate solution and massaging to incorporate up to preferably 0.5% by weight of the diphosphate in the meat. Elimination of the aging step prevents interruption of the processing line and the presence of the diphosphate eliminates toughness associated with nonaged meat.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: November 8, 1994
    Assignee: WTI, Inc.
    Inventor: Wolfgang Ludwig
  • Patent number: 5339593
    Abstract: A device for reinforcing a rear surface of a wall includes a receiving bag (4) attached to one end of an axial extending filling stub (1). Webs (3) are attached to the receiving bag (4) and the filling stub (1) so that the webs and receiving bag can be folded from a radially outwardly extending position toward the axis of the filling stub whereby the receiving bag and the webs can be folded into a position so that the combination of the webs (3), the receiving bag (4) and the one end of the stub (1) can be inserted through an opening (6a) in the wall (6). In the inserted position, the webs (3) return to the radially outwardly extending position along with the receiving bag (4) and the bag is filled with a hardenable mass (7) through the filling stub (1). A fixing element (5) is inserted between radially and circumferentially extending ribs (2) on the filling stub (1) located on the opposite side of the wall from the receiving bag (4).
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: August 23, 1994
    Assignee: Hilti Aktiengesellschaft
    Inventors: Wolfgang Ludwig, Armin Hoffmann
  • Patent number: 5332153
    Abstract: The retention value of a screw previously inserted into a wooden railroad tie is increased by an axially extending sleeve ( 20 ) having an external thread ( 24 ) and an internal thread (25). The thread revolutions of the internal thread (25) are offset axially by half (h) the thread pitch (H) of the external thread (24). Due to this offset of the threads, the screw is positioned in the sleeve so that its threads are located between the external thread revolutions affording a new retention, while the external thread (24) seats within the thread previously formed in the wooden railroad tie by the screw.
    Type: Grant
    Filed: December 8, 1992
    Date of Patent: July 26, 1994
    Assignee: Hilti Aktiengesellschaft
    Inventors: Erich Leibhard, Franz Popp, Wolfgang Ludwig, Thomas Schwaninger
  • Patent number: 5311129
    Abstract: For the determination of all linearly independent components of an Nth order gradient tensor of a magnetic field, at least 3+2N planar gradiometers of the Nth order are arranged on at least 3 non-parallel and non-orthogonal surfaces. As a result, three-dimensional coil structures are not necessary.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: May 10, 1994
    Assignee: Dornier GmbH
    Inventors: Wolfgang Ludwig, Wolfgang Eschner