Patents by Inventor Jenoe Kovacs

Jenoe Kovacs 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: 5496633
    Abstract: A transfer film having a magnetic layer consists essentially of a substrate film, a parting layer and a transfer layer which is detachable from the said parting layer and is formed by one or more magnetic layers, and, on that side of the magnetic layer which faces the substrate film, after detachment of the substrate film, the surface-forming layer consists of a top layer which contains inorganic pigments in a cross-linked polymer matrix and has a thickness of from 0.2 to 5.0 .mu.m and a surface resistance of from 10.sup.-1 to 10.sup.-8 ohm/cm.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: March 5, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Manfred Steuerwald, Manfred Ohlinger, Jenoe Kovacs, Dieter Schwarz
  • Patent number: 5264292
    Abstract: Transfer films consist essentially of a support film, a release layer and a transfer layer detachable from this release layer and composed of two magnetic layers and said transfer films may have, on the second magnetic layer, an adhesive layer which serves for fixing the transfer layer to a substrate, the two magnetic layers each containing a magnetizable material having a different coercive force.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: November 23, 1993
    Assignee: BASF Magnetics GmbH
    Inventors: Jenoe Kovacs, Manfred Ohlinger, Manfred Steuerwald
  • Patent number: 5209970
    Abstract: Abstract of the Disclosure: Magnetic recording media comprise a nonmagnetic substrate and a magnetizable layer arranged thereon and essentially consisting of a magnetic material from the group consisting of the cobalt-modified iron oxides and of the hexagonal ferrites and inorganic fillers finely dispersed in organic binders, the inorganic filler used being ferromagnetic chromium dioxide.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: May 11, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Manfred Ohlinger, Jenoe Kovacs
  • Patent number: 5006406
    Abstract: In magnetic recording media which have at least one magnetizable layer firmly applied to a nonmagnetic base, the magnetizable layer essentially consists of a magnetic material finely dispersed in an organic polymer binder, a dispersant, a lubricant and other conventional additives.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: April 9, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Jenoe Kovacs, Milena Melzer, Werner Balz, Werner Lenz, Werner Loch, Helmut Jakusch
  • Patent number: 4933004
    Abstract: Ferromagnetic metal particles of substantially iron are prepared by starting from an acicular .alpha.-FeOOH, applying a shape-stabilizing finish to the particle surface, heating at 500.degree.-850.degree. C. and subsequently reducing with gaseous reducing agents at 200.degree.-500.degree. C. to the metal, and starting .alpha.-FeOOH being prepared in the presence of zinc and phosphate ions.
    Type: Grant
    Filed: February 5, 1987
    Date of Patent: June 12, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus-Dieter Hoppe, Werner Steck, Jenoe Kovacs, Rainer Feser, Helmut Jakusch
  • Patent number: 4842896
    Abstract: Magnetic recording media, consisting of a non-magnetic base and a magnetic layer firmly bonded thereto, exhibit improved properties in sustained operation if, in the course of their production, a dispersion of inorganic particles in a solvent is applied to the magnetic layer, and the solvent is then removed.
    Type: Grant
    Filed: September 22, 1987
    Date of Patent: June 27, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Grau, Albert Kohl, Jenoe Kovacs, Werner Balz, Wulf Muenzer
  • Patent number: 4775553
    Abstract: Magnetic recording media are produced by dispersing pulverulent magnetic material in a mixture of a solvent, an organic polymer binder, a dispersant and other conventional additives, with the aid of a conventional dispersing apparatus and using a particular ceramic grinding medium, applying the resulting dispersion in the form of a layer on a base and then compacting the layer.
    Type: Grant
    Filed: July 22, 1986
    Date of Patent: October 4, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Jenoe Kovacs, Peter Engelhardt, Hermann Roller, Lothar Schwarz, Peter Nagel
  • Patent number: 4755395
    Abstract: The preparation of acicular ferrimagnetic iron oxides which contain cobalt and phosphate ions and, if desired, further additives, and their use for manufacturing magnetic recording media.
    Type: Grant
    Filed: May 5, 1986
    Date of Patent: July 5, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Steck, Rainer Feser, Werner Loeser, Peter Rudolf, Guenter Vaeth, Helmut Jakusch, Jenoe Kovacs
  • Patent number: 4729785
    Abstract: Acicular metal particles consisting essentially of iron are prepared by reducing .alpha.-iron(III) oxide obtained--by dehydration--from acicular iron(III) oxide hydroxide prepared in the presence of phosphate ions and having a shape-stabilizing surface coating.
    Type: Grant
    Filed: April 29, 1986
    Date of Patent: March 8, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Ekkehard Schwab, Werner Steck, Peter Rudolf, Guenter Vaeth, Helmut Jakusch, Jenoe Kovacs
  • Patent number: 4666783
    Abstract: Magnetic recording media comprise a non-magnetic base and one or more magnetic layers consisting of an organic binder matrix containing finely divided magnetic material, the said binder matrix being obtained by electron beam curing of a mixture of from 60 to 100% by weight of a polyurethane acrylate polymer possessing polymerizable acrylate double bonds and from 0 to 40% by weight of an acrylate monomer and/or an acrylate prepolymer and/or an N-vinyl monomer.
    Type: Grant
    Filed: May 15, 1985
    Date of Patent: May 19, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenter Heil, Werner Lenz, Jenoe Kovacs
  • Patent number: 4666781
    Abstract: Magnetic recording media comprising a non-magnetic substrate and a magnetic layer comprising a finely divided magnetic material dispersed in an organic solvent soluble, crosslinkable, essentially linear, thermoplastic polyurethane which possesses acrylate side and terminal groups wherein said polyurethane is prepared by reacting poly- and/or diisocyanates with a mixture of (a) methacrylate - or acrylate - diols having molecular weights of from 146 to 3,000, (b) monoesters of methacrylic or acrylic acid and a diol having a molecular weight of from 116 to 300, and (c) other organic polydiol compounds which have molecular weights of from 400 to 5,000.
    Type: Grant
    Filed: July 26, 1985
    Date of Patent: May 19, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: August Lehner, Guenter Heil, Jenoe Kovacs, Werner Balz, Werner Lenz
  • Patent number: 4629632
    Abstract: Layer-type magnetic recording media are produced by applying a dispersion of a magnetically anisotropic material in a binder solution onto a flexible plastic base provided with an adhesion-promoting layer and then solidifying the magnetic layer, by a method in which the adhesion-promoting layer consists of a radiation-curable aqueous dispersion of a polymer.
    Type: Grant
    Filed: July 26, 1985
    Date of Patent: December 16, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Balz, Jenoe Kovacs, Hilmar Lechner, Dieter Schaefer, Ingolf Buethe
  • Patent number: 4581296
    Abstract: Magnetic recording media consist of a non-magnetic base and a magnetic layer firmly bonded thereto, the magnetic layer containing further additives in addition to ferromagnetic metal powder, an organic binder, a metal oxide powder and conventional assistants.
    Type: Grant
    Filed: February 26, 1985
    Date of Patent: April 8, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Balz, Jenoe Kovacs, Wulf Muenzner, Hermann Roller
  • Patent number: 4560456
    Abstract: Magnetic recording media comprise a non-magnetic base and one or more magnetic layers consisting of an organic binder matrix containing finely divided magnetic material, the said matrix being obtained by electron beam curing of a mixture of from 70 to 90% by weight of a polyurethane acrylate polymer possessing polymerizable double bonds and from 10 to 30% by weight of one or more copolymerizable compounds.
    Type: Grant
    Filed: September 10, 1984
    Date of Patent: December 24, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenter Heil, Werner Lenz, Jenoe Kovacs, Werner Grau, Werner Balz
  • Patent number: 4559118
    Abstract: Magnetic recording media comprise a non-magnetic base and one or more magnetic layers consisting of an organic binder matrix containing finely divided magnetic material, the said matrix being obtained by electron beam curing of a mixture of from 50 to 100% by weight of a polyurethane acrylate polymer possessing polymerizable double bonds and from 0 to 50% by weight of an acrylate and/or an acrylate prepolymer and/or an N-vinyl monomer and/or an N-vinyl prepolymer.
    Type: Grant
    Filed: September 10, 1984
    Date of Patent: December 17, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenter Heil, Herbert Spoor, Werner Lenz, Jenoe Kovacs, Werner Grau, Werner Balz, August Lehner
  • Patent number: 4557813
    Abstract: Magnetic recording media comprising a non-magnetic base and one or more magnetic layers consisting of an organic binder matrix containing finely divided magnetic material, the said matrix being obtained by electron beam curing of a mixture of from 60 to 100% by weight of a polyurethane acrylate polymer possessing polymerizable double bonds and from 0 to 40% by weight of an acrylate and/or an acrylate prepolymer and/or an N-vinyl monomer and/or an N-vinyl prepolymer.
    Type: Grant
    Filed: September 10, 1984
    Date of Patent: December 10, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenter Heil, Werner Lenz, Jenoe Kovacs
  • Patent number: 4495246
    Abstract: Acicular ferromagnetic chromium dioxide particles having a pH greater than 4 and a process for their preparation.
    Type: Grant
    Filed: October 27, 1983
    Date of Patent: January 22, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Steck, Jenoe Kovacs, Norbert Mueller, Helmut Jakusch
  • Patent number: 4457982
    Abstract: A modified acicular ferrimagnetic iron oxide which consists of a core of gamma-iron(III) oxide and a surrounding shell of gamma-iron(III) oxide modified by tin dioxide and carbon, and a process for its preparation.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: July 3, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Rudolf, Jenoe Kovacs, Guenter Vaeth, Manfred Ohlinger
  • Patent number: 4448761
    Abstract: Acicular ferrimagnetic iron oxides are prepared by a process in which iron (III) oxide hydroxide consisting essentially of lepidocrocite is reduced at from 350.degree. to 600.degree. C. by means of an organic compound which is a synthetic polymer with a molecular weight of from 3,000 to 40,000 to give magnetite, which, if desired, is subsequently partially or completely oxidized with an oxygen-containing gas at from 200.degree. to 450.degree. C.
    Type: Grant
    Filed: October 20, 1982
    Date of Patent: May 15, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Wilhelm Sarnecki, Jenoe Kovacs, Werner Loeser, Peter Rudolf, Guenter Vaeth
  • Patent number: 4439231
    Abstract: Acicular ferromagnetic metal particles consisting essentially of iron are prepared by a process wherein acicular iron(III) oxide hydroxide provided with a shape-stabilizing surface coating, or iron(III) oxide obtained therefrom by dehydration, is reduced by means of a decomposable organic compound and hydrogen.
    Type: Grant
    Filed: July 28, 1983
    Date of Patent: March 27, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Steck, Peter Rudolf, Wilhelm Sarnecki, Werner Loeser, Jenoe Kovacs, Helmut Jakusch