Patents by Inventor Hermann Holtkamp, Sr.

Hermann Holtkamp, Sr. 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: PP4154
    Abstract: This invention relates to a novel African Violet plant having violet-blue blossoms of large size, borne over a long period on strong, upright stems.
    Type: Grant
    Filed: October 7, 1976
    Date of Patent: November 22, 1977
    Inventor: Hermann Holtkamp, Sr.
  • Patent number: PP4375
    Abstract: The new anthurium cultivar Senior II is characterized by its fiery red, generally heart-shaped spathe which have a wavy surface and a slight indentation along an edge thereof. Straight and wiry petioles position the spathe slightly above the leaves, which are medium to dark green. The new cultivar has an early blooming habit, a slightly spreading growth habit, and can be asexually reproduced only by tissue culture.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: February 6, 1979
    Inventor: Hermann Holtkamp, Sr.
  • Patent number: PP4376
    Abstract: The new anthurium cultivar Senior I is characterized by its fast and compact growth habit; orange-red, generally heart shaped spathe having a grooved or ridged surface and a slight indentation along one side thereof; early blooming habit; straight and strong petioles, light to medium green leaves which provide an attractive contrast with the orange-red spathe and white-yellow spadix; propagation by side shoots or tissue culture, and by its suitability for pot production.
    Type: Grant
    Filed: June 28, 1978
    Date of Patent: February 6, 1979
    Inventor: Hermann Holtkamp, Sr.
  • Patent number: PP4577
    Abstract: An African violet plant having vigorous and compact growth habit; intensive blue-violet flowers carried on 7-9 flower stems, with up to 12 or more flowers per stem; attractive dark green, shiny leaves, and by its long lasting and non-dropping flowers.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: July 22, 1980
    Inventor: Hermann Holtkamp, Sr.
  • Patent number: PP4578
    Abstract: An African violet having vigorous growth habit; strong and upright flower stems, each carrying 7-9 large single star-shaped purple-violet flowers; prominent bright yellow anther cells, and by its round to heart-shaped leaves carried on strong petioles.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: July 22, 1980
    Inventor: Hermann Holtkamp, Sr.