Patents by Inventor Holger Kistrup

Holger Kistrup 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: 5076199
    Abstract: An apparatus for the chemical metallization of open-pored foams, nonwovens, needle felts of plastic material or similar textile material, in particular those having a porosity of 45 to 98%, has three processing stations. The first processing station is a laying station, the second is a chemical metallization station and the third is a centrifugal station. The material of the substrate webs treated in the apparatus is made of polypropylene, polyethylene, polyamide, polyester or aminoplasts.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: December 31, 1991
    Assignee: Deutsche Automobilgesellschaft MbH
    Inventor: Holger Kistrup
  • Patent number: 5034066
    Abstract: A process for washing and rinsing substrate sheets, in particular of nonwoven fabric or needle-punched felt sheets, is used after previously carried out activation and electroless chemical metallization. The pores or the surfaces of the substrate sheets are adequately freed from the salt residues of the metallizing solution. In this process, the textile material is wound spirally onto the rotor of a drum, and the washing or rinsing water is fed into the textile material via a hollow shaft of the rotor. The washing, rinsing, and spinning operations proceed in one apparatus, resulting in an appreciable savings in the amounts of water supplied. The entire washing and spinning operations in the drum lends itself to complete automation.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: July 23, 1991
    Assignee: Deutsche Automobilgesellschaft mbH
    Inventors: Otwin Imhof, Holger Kistrup
  • Patent number: 5000833
    Abstract: An electroplating rack for the electrochemical surface treatment of metallic substrates or metallized plastic substrates is described. The metallic rack is, moreover, covered with an insulating layer of enamel, contact points being left bare at which the substrate to be treated is connected in an electrically conducting manner to the rack during the electroplating process.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: March 19, 1991
    Assignee: Deutsche Automobilgesellschaft mbH
    Inventors: Otwin Imhof, Holger Kistrup, Claus Schneider
  • Patent number: 4925706
    Abstract: A process is described for the chemical metallization of textile fibers or textile fibrous structures by treating the textile fibrous structure with an activating solution, removing excess activating agent, and without any further intermediate treatment, bringing the fiber into contact with a chemical metallizing solution.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: May 15, 1990
    Assignee: Deutsche Automobilgesellschaft mbH
    Inventors: Holger Kistrup, Claus von Benda
  • Patent number: 4835015
    Abstract: The invention relates to a process for the chemical metallization of sheetlike textile substrates, in particular, of non-woven or needle felt webs, in which the substrates are activated and subsequently electrolessly metallized in a reductant-containing metallization solution in a horizontal attitude or at an angle of up to 20.degree. with the horizontal. The hydrogen which appears as a by-product in the course of the metallization can, as a result, escape particularly simply and rapidly from the substrate, so that uniform metallization of the fibers of the substrate can take place across the entire thickness of the substrate.
    Type: Grant
    Filed: March 30, 1988
    Date of Patent: May 30, 1989
    Assignee: Deutsche Automobilgesellschaft mbH
    Inventors: Holger Kistrup, Gabor Benczur-Urmossy, Friedrich Haschka
  • Patent number: 4237196
    Abstract: An electrolyte glass for use as the solid electrolyte in high-temperature galvanic batteries, for example a sodium-sulfur battery. The glass electrolyte has relatively low resistivity and high corrosion resistance and is easily worked by glass manufacturing techniques. The composition of the glass electrolyte according to the invention is defined by xNa.sub.2 O.multidot.ySiO.sub.2 .multidot.zAl.sub.2 O.sub.3.
    Type: Grant
    Filed: March 19, 1979
    Date of Patent: December 2, 1980
    Assignees: Deutsche Automobilgesellschaft mbH, Jenaer Glaswerk Schott & Gen.
    Inventors: Gunter Gutmann, Holger Kistrup, Friedrich G. K. Baucke, Gerd M/ller
  • Patent number: 4230778
    Abstract: A sodium-sulfur battery in which the sulfur or sulfur-containing positive electrode material is contained in a number of sealed tubes made from a sodium ion-conducting glass electrolyte. The tubes are placed and electrically conducted in parallel and immersed in the sodium constituting the negative electrode. Each of the capillary tubes contains a sealed-in electrical contact wire which passes through an appropriate closure plate to constitute the positive pole of the battery. A number of embodiments is described. The invention also describes the method of construction of the battery.
    Type: Grant
    Filed: March 16, 1979
    Date of Patent: October 28, 1980
    Assignee: Deutsche Automobilgesellschaft mbH
    Inventors: Klaus von Benda, Holger Kistrup