Patents by Inventor Andreas Zimmermann

Andreas Zimmermann 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: 6622946
    Abstract: A device for coating of workpieces has an application unit provided with a distributing plate which has at least one nozzle and at least one valve unit, the at least one valve unit being formed as a plate valve with at least one inlet slider and at least one outlet slider.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: September 23, 2003
    Assignee: Sieghard Schiller GmbH & Co. KG
    Inventors: Thomas Held, Frank Hummel, Martin Speidel, Andreas Zimmermann
  • Publication number: 20030077438
    Abstract: The present invention relates to a composite material that contains 5 to 97%-vol aerogel particles, at least one binder, and at least one fibre material, the diameter of the aerogel particles being ≧0.5 mm, a process for manufacturing this, and the use thereof.
    Type: Application
    Filed: November 26, 2002
    Publication date: April 24, 2003
    Inventors: Dierk Frank, Andreas Zimmermann
  • Patent number: 6479416
    Abstract: The invention relates to a composite material which has at least one formation comprising fibers and aerogel particles and is characterised in that the fibrous formation contains at least one thermoplastic fibrous material to which the aerogel particles are bound and by which the fibers in the formation are bound together. It also relates to a process for the production of said composite material, and the use thereof.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: November 12, 2002
    Assignee: Cabot Corporation
    Inventors: Dierk Frank, Franz Thönnessen, Andreas Zimmermann
  • Patent number: 6365638
    Abstract: Process for preparation of hydrophilic or partially hydrophilic inorganic aerogels. The invention relates to a process for the preparation of hydrophilic or partially hydrophilic inorganic aerogels, which comprises pyrolyzing a hydrophobic inorganic aerogel in the presence of oxygen at temperatures in the range from 100 to 1000° C.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: April 2, 2002
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Fritz Schwertfeger, Andreas Zimmermann
  • Publication number: 20020032272
    Abstract: Interpenetrating organic and inorganic networks with a maximum dimension of 100 nm are produced by: (1) mixing aqueous solutions or dispersions of organic polymers capable of forming polymer networks in aqueous phase, polymer precursors or the mixtures thereof and silicon dioxide components; (2) changing the pH value and/or thermally treating the aqueous solution or dispersion in order to form a gel made of interpenetrating organic and silica gel networks and (3) drying the gel.
    Type: Application
    Filed: December 5, 2000
    Publication date: March 14, 2002
    Inventors: Werner Sievers, Andreas Zimmermann
  • Publication number: 20020020768
    Abstract: A device for coating of workpieces has an application unit provided with a distributing plate which has at least one nozzle and at least one valve unit, the at least one valve unit being formed as a plate valve with at least one inlet slider and at least one outlet slider.
    Type: Application
    Filed: April 3, 2001
    Publication date: February 21, 2002
    Inventors: Thomas Held, Frank Hummel, Martin Speidel, Andreas Zimmermann
  • Patent number: 6316092
    Abstract: The invention concerns a coated sheet which includes an aerogel layer, a method of manufacturing the coated sheet and its use.
    Type: Grant
    Filed: December 7, 1998
    Date of Patent: November 13, 2001
    Assignee: Hoechst Research & Technology Deutschland GmbH & Co. KG
    Inventors: Dierk Frank, Fritz Schwertfeger, Andreas Zimmermann
  • Patent number: 6280744
    Abstract: The invention relates to the use of inorganic aerogels as an auxiliary and/or excipient for pharmaceutical active compounds and/or preparations.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: August 28, 2001
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Fritz Schwertfeger, Andreas Zimmermann, Harald Krempel
  • Patent number: 6191173
    Abstract: The invention relates to a process for preparing organofunctionally modified aerogels by gelling a water glass by means of polycondensation and then converting it, by drying while retaining the structure of the gel, to give an aerogel, which process comprises reacting the gel, before drying, with an at least bifunctional organic compound, at least one functional group serving as a bond to the aerogel, while the remainder are retained, to aerogels which are obtainable by the novel process, and to their use.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: February 20, 2001
    Assignee: Hoechst Research Technology Deutschland GmbH
    Inventors: Fritz Schwertfeger, Andreas Zimmermann
  • Patent number: 6159539
    Abstract: The inventive process concerns the preparation of organically modified aerogels and their use.The process the invention comprises:a) introducing a siliceous lyogel or hydrogel,b) optionally subjecting the gel prepared in a) to complete or partial solvent exchange with an organic solvent,c) reacting the gel obtained in step a) or b) with at least one silylation agent,d) optionally washing the silylated gel obtained in step c) with an organic solvent, ande) drying the gel obtained in step c) or d) subcritically, which comprises reacting in step c) the gel obtained in step a) or b) with at least one chlorine-free silylation agent.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: December 12, 2000
    Assignee: Hoeschst Aktiengesellschaft
    Inventors: Fritz Schwertfeger, Andreas Zimmermann
  • Patent number: 6140377
    Abstract: The invention relates to a process for the preparation of aerogels having hydrophobic surface groups, consisting ofa) taking a silicate-type lyogel,b) optionally subjecting the lyogel taken in Step a) to a solvent exchange with another solvent,c) surface-modifying the gel obtained in Step a) or b) with at least one C.sub.1 -C.sub.6 -alcohol, andd) drying, under subcritical conditions, the surface-modified gel obtained in Step c).
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: October 31, 2000
    Assignee: Hoechst Research & Technology Deutschland GmbH & Co. KG
    Inventors: Fritz Schwertfeger, Andreas Zimmermann
  • Patent number: 6131305
    Abstract: The present invention relates to a process for the sub-critical drying of a lyogel to form an aerogel, in which the lyogel is treated with a heat-conveying fluid at a temperature above the boiling point of the pore liquid of the lyogel under system pressure and the dried aerogel is then separated from the heat-conveying fluid.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: October 17, 2000
    Assignee: Hoechst Research & Technologies GmbH & Co. KG
    Inventors: Rainald Forbert, Andreas Zimmermann, Douglas M. Smith, William Ackerman
  • Patent number: 6129949
    Abstract: The invention concerns a process for preparing organically modified aerogels, in which a) a silicic acid sol with a pH .ltoreq.4.0 is produced from an aqueous potassium silicate solution using at least one organic and/or inorganic acid; b) the resultant silicic acid sol is polycondensed by the addition of a base to form SiO.sub.2 gel; c) the gel produced in step b) is washed with an organic solvent until the water content of the gel is .ltoreq.5 wt %; d) the gel obtained in step c) is surface-modified with at least one C.sub.1-6 alcohol; and e) the surface-modified which are difficult to dissolve in the silicic acid sol. Before step b), the resultant salts, which are difficult to dissolve, are precipitated to the greates possible extent and separated from the silicic acid sol.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: October 10, 2000
    Assignee: Hoecsht Research & Technology Deutschland GmbH & Co KG
    Inventors: Fritz Schwertfeger, Andreas Zimmermann
  • Patent number: 6083619
    Abstract: An inorganic material comprising an aerogel, a process for its preparation, and its use. The invention relates to a composite material comprising from 10 to 95% by volume of aerogel particles whose particle diameter is less than 0.5 mm and a phyllosilicate as inorganic matrix material.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: July 4, 2000
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Dierk Frank, Andreas Zimmermann, Helmut Stuhler
  • Patent number: 6080475
    Abstract: A composite material comprising aerogel, a process for its preparation, and its use. The invention relates to a composite material comprising from 10 to 95% by volume of aerogel particles and at least one inorganic binder, a process for its preparation, and its use.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: June 27, 2000
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Dierk Frank, Andreas Zimmermann, Helmut Stuhler
  • Patent number: 6040375
    Abstract: The invention relates to a composite foam comprising from 10 to 90% by volume of SiO.sub.2 aerogel particles and from 90 to 10% by volume of a foam, preferably a polyurethane and/or polyolefin foam, a process for its preparation and its use.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: March 21, 2000
    Assignee: Hoechst AG
    Inventors: Klaus-Jurgen Behme, Rolf-Michael Jansen, Andreas Zimmermann
  • Patent number: 5948314
    Abstract: The invention relates to a composition comprising between 30 and 95% by volume of aerogel particles and at least one aqueous binder, where the particle diameter of the aerogel particles is less than 0.5 mm and the aerogel particles preferably have hydrophobic surface groups, a process for the preparation thereof, and the use thereof.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: September 7, 1999
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Geiss, Hans-Karl Muller, Werner Prass, Ude Scheunemann, Andreas Zimmermann
  • Patent number: 5888425
    Abstract: The invention relates to a process for the production of modified SiO.sub.2 aerogels in whicha) a silicatic lyogel is prepared,b) if desired, the lyogel prepared in step a) is subjected to a solvent exchange with another organic solvent,c) the gel obtained in step a) or b) is reacted with at least one chlorine-free silylating agent, andd) the gel obtained in step c) is dried subcritically,wherein the chlorine-free silylating agent is a compound of the formula I ##STR1## wherein each R.sup.1 is identical or different and is selected from a group consisting of linear C.sub.1 -C.sub.6 -alkyl radicals, branched C.sub.1 -C.sub.6 -alkyl radicals, cyclohexyl radicals and phenyl radicals,R.sup.2, R.sup.3 and R.sup.4 are identical or different and are selected from the group consisting of hydrogen atoms, linear C.sub.1 -C.sub.6 -alkyl radicals, branched C.sub.1 -C.sub.6 -alkyl radicals, cyclohexyl radicals and phenyl radicals;and n=1, 2 or 3.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: March 30, 1999
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Fritz Schwertfeger, Andreas Zimmermann
  • Patent number: 5866027
    Abstract: The invention relates to a process for producing modified, fiber-reinforced xerogels having porosities greater than 60% and xerogel matrix densities below 0.6 g/cm.sup.3 and to their use as thermal insulating material.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: February 2, 1999
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Dierk Frank, Birgit Kessler, Andreas Zimmermann
  • Patent number: 5811031
    Abstract: Process for the preparation of aerogels by subcritical drying of inorganic and organic hydrogels and lyogels to give aerogels, dielectric drying methods being used.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: September 22, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Rolf-Michael Jansen, Birgit Kessler, Johann Wonner, Andreas Zimmermann