Patents by Inventor Alfonso G. Calub

Alfonso G. Calub 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: 5304722
    Abstract: An improved process for the economical production of F.sub.1 hybrid Oryza sativa plants (i.e., hybrid rice plants of the first filial generation) is provided. Novel female fertile male sterile rice plants which are perennial and capable of retaining viability through the winter are planted in combination with annual female fertile male fertile restorer plants which are killed during the winter. Accordingly, the substantial expense of establishing the required male sterile plants at the beginning of each growing season effectively is eliminated. The seeds formed on the perennial male sterile plants are capable of forming annual male fertile F.sub.1 hybrid Oryza sativa plants. In preferred embodiments additional properties are incorporated into the parent rice plants (as described) which further enhance the F.sub.1 seed production.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: April 19, 1994
    Assignee: Ring Around Products, Inc.
    Inventors: Li Qinxiu, Alfonso G. Calub
  • Patent number: 5158879
    Abstract: An improved process for the economical production of F.sub.1 hybrid Oryza sativa plants (i.e., hybrid rice plants of the first filial generation) is provided. Novel female fertile male sterile rice plants which are perennial and capable of retaining viability through the winter are planted in combination with annual female fertile male fertile restorer plants which are killed during the winter. Accordingly, the substantial expense of establishing the required male sterile plants at the beginning of each growing season effectively is eliminated. The seeds formed on the perennial male sterile plants are capable of forming annual male fertile F.sub.1 hybrid Oryza sativa plants. In preferred embodiments additional properties are incorporated into the parent rice plants (as described) which further enhance the F.sub.1 seed production.
    Type: Grant
    Filed: July 11, 1990
    Date of Patent: October 27, 1992
    Assignee: Ring Around Products, Inc.
    Inventors: Li Qinxiu, Alfonso G. Calub
  • Patent number: 4999945
    Abstract: An improved procedure for forming F.sub.1 hybrid Oryza sativa plants (i.e., hybrid rice plants of the first filial generation) is provided which is capable of being economically implemented on a commercial scale. Plants of the seed and pollen parents each possess a combination of characteristics (as described) which readily facilitate cross-pollination in the absence of the use of labor intensive procedures such as the clippings of flag leaves. The seeds formed on each parent are recovered in bulk and are separated on the basis of a genetic marker. The hybrid rice plants of the F.sub.1 generation unlike those of the seed parent possess long flag leaves which extend upwardly to a greater maximum height than the tips of the panicles whereby photosynthesis can be accomplished on an efficient basis.
    Type: Grant
    Filed: August 8, 1988
    Date of Patent: March 19, 1991
    Assignee: Ring Around Products, Inc.
    Inventor: Alfonso G. Calub
  • Patent number: 4764643
    Abstract: An improved procedure for forming F.sub.1 hybrid Oryza sativa plants (i.e., hybrid rice plants of the first filial generation) is provided which is capable of being economically implemented on a commercial scale. Plants of the seed and pollen parents each possess a combination of characteristics (as described) which readily facilitate cross-pollination in the absence of the application of a growth hormone and the use of labor intensive procedures such as the clipping of flag leaves. The seeds formed on each parent are recovered in bulk and are separated on the basis of a genetic marker. The hybrid rice plants of the F.sub.1 generation unlike those of the seed parent possess long flag leaves which extend upwardly to a greater maximum height than the tips of the panicles whereby photosynthesis can be accomplished on an efficient basis.
    Type: Grant
    Filed: January 6, 1987
    Date of Patent: August 16, 1988
    Assignee: Ring Around Products, Inc.
    Inventor: Alfonso G. Calub