Patents by Inventor Sandor Morocz

Sandor Morocz 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).

  • Zea mays (L.) with capability of long term, highly efficient plant regeneration including fertile transgenic maize plants having a heterologous gene, and their preparation
    Patent number: 6284945
    Abstract: Protoplasts which regenerate reproducibly in a short time to normal, fertile plants can be regenerated from an auxin-autotrophic genotype of Zea mays (L.). Starting from immature embryos on hormone-free media, an auxin-autotrophic, embryogenic callus is formed on the shoot basis of the seedlings, which callus retains its embryogenic potential over a substantial period of time when subcultured on hormone-free medium. In addition to fully-developed embryos, adventitious embryos are also formed under suitable culture conditions (6-9% of sucrose in the medium). When the sucrose content is reduced to 2-3% and 2,4-dichlorophenoxyacetic acid is added, soft, granular calli are formed which consist of embryogenic cell aggregates (type II callus). After subculturing the type II callus in the form of a cell suspension culture, totipotent protoplasts can be isolated. From these protoplasts, the maize plants according to the invention are regenerated.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: September 4, 2001
    Assignee: Hoechst AG
    Inventors: Denes Dudits, Sandor Morocz, Janos Nemeth, Günter Donn
  • Zea mays (L.) with capability of long term, highly efficient plant regeneration including fertile transgenic maize plants having a heterologous gene, and their preparation
    Patent number: 5792936
    Abstract: Protoplasts which regenerate reproducibly in a short time to normal, fertile plants can be regenerated from an auxin-autotrophic genotype of Zea mays (L.). Starting from immature embryos on hormone-free media, an auxin-autotrophic, embryogenic callus is formed on the shoot basis of the seedlings, which callus retains its embryogenic potential over a substantial period of time when subcultured on hormone-free medium. In addition to fully-developed embryos, adventitious embryos are also formed under suitable culture conditions (6-9% of sucrose in the medium). When the sucrose content is reduced to 2-3% and 2,4-dichlorophenoxyacetic acid is added, soft, granular calli are formed which consist of embryogenic cell aggregates (type II callus). After subculturing the type II callus in the form of a cell suspension culture, totipotent protoplasts can be isolated. From these protoplasts, the maize plants according to the invention are regenerated.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: August 11, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Denes Dudits, Sandor Morocz, Janos Nemeth, Gunter Donn
  • Zea mays (L.) with capability of long term, highly efficient plant regeneration including fertile transgenic maize plants having a heterologous gene, and their preparation
    Patent number: 5767367
    Abstract: Protoplasts which regenerate reproducibly in a short time to normal, fertile plants can be regenerated from an auxin-autotrophic genotype of Zea mays (L.). Starting from immature embryos on hormone-free media, an auxin-autotrophic, embryogenic callus is formed on the shoot basis of the seedlings, which callus retains its embryogenic potential over a substantial period of time when subcultured on hormone-free medium. In addition to fully-developed embryos, adventitious embryos are also formed under suitable culture conditions (6-9% of sucrose in the medium). When the sucrose content is reduced to 2-3% and 2,4-dichlorophenoxyacetic acid is added, soft, granular calli are formed which consist of embryogenic cell aggregates (type II callus). After subculturing the type II callus in the form of a cell suspension culture, totipotent protoplasts can be isolated. From these protoplasts, the maize plants according to the invention are regenerated.
    Type: Grant
    Filed: January 12, 1995
    Date of Patent: June 16, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Denes Dudits, Sandor Morocz, Janos Nemeth, Gunter Donn