Patents by Inventor Alfred Kern

Alfred Kern 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: 20030004264
    Abstract: A method for the production of self-emulsifiable, aqueous polyurethane resins having improved characteristics is described, in which
    Type: Application
    Filed: April 30, 2002
    Publication date: January 2, 2003
    Inventors: Alois Maier, Stefan Ingrisch, Alfred Kern
  • Patent number: 6462127
    Abstract: A self-crosslinking polyurethane polymer hybrid dispersion based on oxidatively drying polyols having a high degree of film hardness is described, which is characterized in that it contains the reaction components claimed. The advantages of the polyurethane polymer hybrid dispersion according to the invention, such as a high degree of hardness in combination with high flexibility of the tear-free films, good resistance to chemicals, high stability of the dispersions in a wide pH range, good stability in the freezing and thawing cycle and the use of economical raw materials, are achieved in a simplified synthesis pathway wityout subsequent chemical crosslinking, and simultaneously with a low content of organic solvent (≦4% by weight) and good film formation at temperatures of ≧+10° C.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: October 8, 2002
    Assignee: SKW Bauchemie GmbH
    Inventors: Stefan Ingrisch, Alois Maier, Franz Wolfertstetter, Herbert Winkelmann, Alfred Kern, Josef Weichmann
  • Patent number: 6211317
    Abstract: Copolymers based on unsaturated dicarboxylic acid derivatives, oxyalkylene glycol alkenyl ethers, unsaturated dicarboximides and/or -amides and vinyl monomers are described, as also their use as additives for hydraulic binders, especially cement. The copolymers also have an excellent plasticizing effect—even if they are added in large quantities—when used in concrete mixtures with an extremely low water content, and they do not retard the setting process.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: April 3, 2001
    Assignee: SWK Bauchemie GmbH
    Inventors: Gerhard Albrecht, Hubert Leitner, Josef Weichmann, Alfred Kern
  • Patent number: 6206836
    Abstract: A battery-operated device, for example, a blood pressure measuring device, consists essentially of a housing (2) and a compartment (3) to accommodate batteries. The compartment (3) is rotatably hinge-connected to the housing (2). The compartment (3) can be pivoted between an insertion position (E) for receiving batteries and an operating position (B). The device (1) has a standing surface (15). The compartment (3) for accommodating batteries is arranged so that the outside surface (4) of the compartment (3) in the operating position (B) forms part of one of the side walls (16a, 16b, 16c), and the inside (8) of compartment (3) is open at the top to receive batteries in the insertion position (E).
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: March 27, 2001
    Assignee: Microlife Investments Corporation
    Inventors: Alfred Kern, Roland Schirrmacher
  • Patent number: 6187887
    Abstract: Water-soluble or water-swellable copolymers containing sulfonic groups and based on (meth)acrylamide alkyl sulfonic acids and (meth)acrylamide or N-vinyl compounds are described, as well as their use as additives in aqueous building material mixes or for water-based painting and coating systems. The copolymers of the invention, even when used in relatively small quantities, serve as very effective and highly compatible water retention agents in such building material mixes and surface-coating systems.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: February 13, 2001
    Assignee: SKW Bauchemie GmbH
    Inventors: Gerhard Albrecht, Christian Huber, Manfred Schuhbeck, Josef Weichmann, Alfred Kern
  • Patent number: 6150437
    Abstract: Flow improving agents for binder suspensions containing cement are described, which consist of:a) Graft polymers which have been prepared by radical grafting of a polyalkylene oxide of the general formula (I) with an ethylenically unsaturated mono- or dicarboxylic acid or the anhydride thereof, and then by derivatizing with a primary or secondary amine and/or alcohol, and also ofb) Casein.These flow improving agents have the advantage that the ability to flow is considerably improved in comparison, for example, with casein alone, and the improved ability to flow is preserved over a longer period of time.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 21, 2000
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Konrad Wutz, Alfred Kern, Josef Weichmann
  • Patent number: 6016976
    Abstract: A venting nozzle has a housing having an air inlet through which an air flow enters the housing. The housing has an outlet through which the air flow exits. The outlet has deflection elements for deflecting the air flow. Parallel flaps are pivotably connected in the housing for shutting off the air flow. Meshing gear segments are positioned in the housing and connect the flaps. The meshing gear segments are arranged outside the air flow. A rotary control is coordinated with one of the flaps for controlling positioning of the flaps.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: January 25, 2000
    Assignee: Aurora Konrad G. Schulz GmbH & Co.
    Inventors: Alfred Kern, Wolfgang Knuhl
  • Patent number: 5895802
    Abstract: The invention concerns redispersible polymer powders characterized by a proportion of 3 to 30% by wt relative to the polymer weight of condensation products of amino-s-triazine/formaldehyde/sulfite with molar ratios of amino-s-triazine to formaldehyde to sulfite of 1/1.3-6.0/0.3-1.5 and with a low free formaldehyde content. These condensation products of amino-s-triazine/formaldehyde/sulfite are exceedingly effective protective colloids when spray-drying polymer dispersions and can be combined in problem-free manner with casein.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: April 20, 1999
    Assignee: SKW Trostberg Aktiengescellchaft
    Inventors: Josef Weichmann, Alfred Kern
  • Patent number: 5891983
    Abstract: Water-soluble formaldehyde-free polycondensation products based on amino-s-triazines with at least two amino groups and glyoxylic acid, which contain as further component at least one amino compound and where the molar ratio of amino-s-triazine to glyoxylic acid to amino compound is 1:0.5 to 6.0:0.1 to 2.0. These polycondensation products are excellently suited as additives for aqueous suspensions of inorganic binders, especially cement, lime and gypsum. Building material mixtures which contain these polycondensation products remain workable for a considerably longer time and, in spite of this, also set more quickly.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: April 6, 1999
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Gerhard Albrecht, Manfred Schuhbeck, Christian Huber, Josef Weichmann, Alfred Kern
  • Patent number: 5820457
    Abstract: An air nozzle has an air nozzle body and a lamella arrangement for directing the air flow exiting from the air nozzle. The lamella arrangement includes first lamellas connected to the air nozzle body so as to be pivotable about parallel-extending first pivot axes. A roller is fastened within the air nozzle body so as to be pivotable about a second pivot axis. The roller has second lamellas positioned slantedly to the second pivot axis. The second pivot axis and the first pivot axes extend parallel to one another.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: October 13, 1998
    Assignee: Aurora Konrad G. Schulz GmbH & Co.
    Inventors: Alfred Kern, Wolfgang Knuhl, Roland Gruner
  • Patent number: 5798425
    Abstract: Disclosed is a co-polymer based on oxyalkyleneglycol alkenyl ethers and unsaturated dicarboxylic acid derivatives, as well as vinylic polyalkyleneglycol, polysiloxane or ester compounds. These co-polymers can be used as additives for hydraulic binding agents, especially cement. The co-polymers of the invention have an excellent and long-lasting liquefying action without introducing large amounts of air pores into the binding agent mixtures, thereby preventing the loss of strength and stability of the hardened building materials.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: August 25, 1998
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Gerhard Albrecht, Josef Weichmann, Johann Penkner, Alfred Kern
  • Patent number: 5789526
    Abstract: Disclosed is a highly viscous condensation product containing sulfonic acid groups based on amino-s-triazines with at least 2 amino groups and formaldehyde which has a viscosity of 500 to 100,000 cp at 20.degree. C. and a pH value of 8.0 to 13.0 as an aqueous solution with a solids content of 20% by weight. The product is obtainable by (a) condensation of amino-s-triazine, formaldehyde and sulfite in a molar ratio of 1:1.9 to 2.9:0.7 to 1.3 in aqueous solution at a pH value of 9.0 to 12.0 and a temperature of 50.degree. to 90.degree. C. until the sulfite is no longer detectable, and (b) subsequent further condensation at a pH value of 2.0 to 5.0 and a temperature of 50.degree. to 100.degree. C. until the viscosity exhibits the desired value.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: August 4, 1998
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Josef Weichmann, Franz Wolfertstetter, Herbert Winkelmann, Alfred Kern
  • Patent number: 5750634
    Abstract: Disclosed is a soluble polycondensation product based on amino-s-triazines with at least two amino groups and forma ehyde, a process for making the product and the use thereof as an additive for an aqueous binding agent suspension.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: May 12, 1998
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Gerhard Albrecht, Josef Weichmann, Ludwig Eibl, Christian Huber, Alfred Kern
  • Patent number: 5739212
    Abstract: Water-soluble graft polymers are described which have been produced bya) radical grafting of a polyalkylene oxide of the general formula I ##STR1## in which R.sup.1 =--H, --C.sub.n H.sub.2n+1, --C.sub.6 H.sub.4 --C.sub.n H.sub.2n+1, ##STR2## --(CH--R.sup.2).sub.m NHR.sup.2, --(CH--R.sup.2).sub.m OH, --(CH--R.sup.2).sub.m --COOH, --CO--R.sup.5R.sup.2 =--H, --CH.sub.3, --C.sub.2 H.sub.5R.sup.3 =--H, --C.sub.n H.sub.2n+1, --C.sub.m H.sub.2m --SO.sub.3 Na, --(CH--R.sup.2).sub.m NHR.sup.2, --(CH--R.sup.2).sub.m OH, --(CH--R.sup.2).sub.m --COOH, --CO--R.sup.5R.sup.4 =--H, --(CH--R.sup.2).sub.m --COOH, --CO--R.sup.5R.sup.5 =--C.sub.m H.sub.2m+1, --C.sub.6 H.sub.5, --(CH--R.sup.2).sub.m --COOH, --C.sub.6 H.sub.4 --COOHn denotes 1-18, m denotes 1-5, x denotes 2-200, y denotes 0 or 1with an ethylenically unsaturated mono or dicarboxylic acid or their anhydride and subsequentlyb) derivatising with a primary or secondary amine and/or alcohol.
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: April 14, 1998
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Konrad Wutz, Josef Weichmann, Alfred Kern, Hans-Gunter Rosenbauer
  • Patent number: 5595239
    Abstract: A heating-venting-air conditioning unit for a cabin vehicle is positioned at the roof of the cabin vehicle. The unit has at least one blower having air channels connected to a suction side and a pressure side of the blower. At least one of the air channels is connected to the suction side to form a suction channel and at least one of the air channels is connected to the blower side to form an air distributing channel. At least one of the suction channel and the air distributing channel is comprised of two half-shells manufactured by a double deep-drawing process.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: January 21, 1997
    Assignee: Aurora Konrad G. Schulz GmbH & Co.
    Inventors: Hannes Wolf, Alfred Kern
  • Patent number: 5558709
    Abstract: Disclosed is a flow improving agent for binder suspensions containing cement which is composed of a) amino-s-triazine-formaldehyde-sulfite condensation products having a molar ratio of amino-s-triazine:formaldehyde:sulfite of 1:1.3 to 6.0: 0.3 to 1.5 and a low content of free formaldehye as well as b) casein. The flow improving agents have the advantage that the flowability is considerably improved compared to casein (alone) for example and the increased flowability remains constant even over a longer time period.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: September 24, 1996
    Assignee: SKW Trostberg
    Inventors: Josef Weichmann, Aloisia Stadler, Alfred Kern
  • Patent number: 5071945
    Abstract: A process for the production of sulphonic acid group-containing condensation products based on amino-s-triazines with at least two amino groups and formaldehyde with a low content of free formaldehyde, whereina) an amino-s-triazine, formaldehyde and sulphite is condensed in a mole ratio of 1:1.3 to 6:0.3 to 1.5 in aqueous solution at a pH value of 9.0 to 12.0 and at a temperature of 50.degree. to 90.degree. C. until sulphite is no longer detectable.b) subsequently, further condensation is carried out at a pH value of 2.0 to 7.0 and at a temperature of 50.degree. to 90.degree. C. until the viscosity of the solution is 4 to 1000 mm.sup.2 /s at 80.degree. C. andc) thereafter the condensation product is subjected to an after-treatment in a strongly alkaline range of pH.sqroot.11.0 and at an elevated temperature.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: December 10, 1991
    Assignee: SKW Trostberg Aktiengesellschaft
    Inventors: Josef Weichmann, Manfred Bichler, Alfred Kern, Hans-Gunter Rosenbauer
  • Patent number: 4864919
    Abstract: A narrow vent for aerating windshields of tractors, work machines, etc. The vent has a plurality of fins that spread the air stream that is directed onto a window in a fan-like manner. A portion of the fins, as side fins, are directed onto a region adjacent the vent, and the other portion of the fins, as main fins, are directed onto a region just ahead of the vent, with the angle provided by the fins corresponding approximately to a quarter circle. The air-exit plane provided by the vent extends at most insignificantly beyond the vehicle body part in which the vent is installed. All of the fins are partially recessed in the vent. The side fins are longer, and the outermost side fin is considerably longer, than the main fins.
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: September 12, 1989
    Assignee: Aurora Konrad G. Schulz GmbH & Co.
    Inventors: Joachim Schulz, Alfred Kern
  • Patent number: D437414
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: February 6, 2001
    Assignee: Microlife Investments Corporation
    Inventors: Alfred Kern, Roland Schirrmacher
  • Patent number: D449239
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: October 16, 2001
    Assignee: Microlife Corporation
    Inventor: Alfred Kern