Patents by Inventor Johannes Lindemann

Johannes Lindemann 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).

  • Method and device for producing a metal hydroxide
    Patent number: 7282188
    Abstract: The invention concerns a method and an apparatus for producing a metal hydroxide, in particular magnesium hydroxide, from a salt solution, wherein the metal is firstly precipitated from the salt solution and the suspension produced in that way is then filtered. The object of the invention is to provide a method and an apparatus which permit simple inexpensive and rapid production of metal hydroxide, in particular magnesium hydroxide, in a high state of purity. According to the invention that is achieved in that the suspension is filtered through at least one filter (13-17) of a cross-flow filtration installation (13-17), and that a permeate produced by filtration of the suspension is fed to the cross-flow filtration installation (14-17) again.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: October 16, 2007
    Assignee: IMB + Frings Watersystems GmbH
    Inventors: Johannes Lindemann, Karl Manderscheld, Manfred Schneider
  • Method and device for producing a metal hydroxide
    Publication number: 20050127001
    Abstract: The invention concerns a method and an apparatus for producing a metal hydroxide, in particular magnesium hydroxide, from a salt solution, wherein the metal is firstly precipitated from the salt solution and the suspension produced in that way is then filtered. The object of the invention is to provide a method and an apparatus which permit simple inexpensive and rapid production of metal hydroxide, in particular magnesium hydroxide, in a high state of purity. According to the invention that is achieved in that the suspension is filtered through at least one filter (13-17) of a cross-flow filtration installation (13-17), and that a permeate produced by filtration of the suspension is fed to the cross-flow filtration installation (14-17) again.
    Type: Application
    Filed: March 19, 2003
    Publication date: June 16, 2005
    Inventors: Johannes Lindemann, Karl Manderscheid, Manfred Schneider
  • Method for treating circulating water from an enamelling line
    Patent number: 6537457
    Abstract: Polyaspartic acid and, optionally a non-ionic surfactant, are used to treat circulating water from a paint shop.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: March 25, 2003
    Assignee: Aware Chemicals L.L.C.
    Inventors: Dirk Bohnes, Johannes Lindemann, Karl Manderscheid
  • Method for cleaning the paint feeding parts of a painting installation, especially the paint lines
    Patent number: 6475295
    Abstract: A method for cleaning paint carrying parts of a paint shop, especially the paint lines, is described, wherein the paint carrying parts are rinsed with a liquid containing an organic solvent. In order to obtain particularly advantageous conditions, polyaspartic acid is mixed with the rinsing liquid.
    Type: Grant
    Filed: March 29, 2001
    Date of Patent: November 5, 2002
    Assignee: Aware Chemicals L.L.C.
    Inventors: Alfred Bohnes, Johannes Lindemann, Karl Manderscheid, Dirk Bohnes
  • Process for the preliminary treatment of a metallic workpiece before coating
    Patent number: 6432220
    Abstract: A process for the preliminary treatment of a metallic workpiece before coating is disclosed. The surface to be coated is cleaned with a solution containing a degreasing agent and coated with a corrosion-inhibiting layer. In order to obtain particularly advantageous conditions, the invention proposes that the surface of a workpiece to be coated be treated with a solution of polyaspartic acid to apply a corrosion-resistant coating.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: August 13, 2002
    Assignee: Aware Chemicals L.L.C.
    Inventors: Johannes Lindemann, Karl Manderscheid, Rainer Kluth, Dirk Bohnes
  • Method of processing waste water, in particular from malt factories and breweries
    Patent number: 6328893
    Abstract: There is described a method of processing waste water, in particular from malt factories and breweries, which in the operational use is contaminated with microorganisms, salts and organic compounds. To enable a reuse, it is proposed to subject the waste water to a reverse osmosis after a treatment with activated sludge, before it is recirculated to the operational use.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: December 11, 2001
    Assignees: Frings Recycling-AnLagen GmbH & Co. KG, Schwander GmbH
    Inventors: Karl Manderscheid, Johannes Lindemann, Horst Rettig