Patents by Inventor Alfredo Rivera

Alfredo Rivera 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).

  • Pharmaceutical composition for the sustained release of hydralazine and use thereof as a support for cancer treatment
    Patent number: 7820200
    Abstract: The invention relates to a substained release form of hydralazine for use in cancer therapy. The substained release form of hydralazine can be used to obtain a constant concentration of the active principle in the blood, thereby enabling the demethylating effect of the hydralazine without producing the hypotensive action thereof, such that the inventive composition can be used in cancer therapy.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: October 26, 2010
    Inventors: Luis Estrada Flores, Alfonso Dueñas González, Arturo Borbolla García, Raul Serna Martinez, Alfredo Rivera Hernández, Alejandro Mohar Betancourt
  • High pressure toilet water feeder conversation tank
    Patent number: 4438536
    Abstract: A tank containing conserved water having a drainpipe connected to a fresh water supply pipe of a toilet, and a valve along the drainpipe being automatically operated by a high pressure valve located along the fresh water supply pipe.
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: March 27, 1984
    Inventor: Alfredo Rivera
  • Water feeder conservation tank
    Patent number: 4371992
    Abstract: A water tank located above a conventional toilet tank so as to flow water downward into the toilet tank; the water tank including a drain pipe downward into the toilet tank, a hinged cover on top, and a mechanism to flow the water outward therefrom into the toilet tank.
    Type: Grant
    Filed: September 4, 1981
    Date of Patent: February 8, 1983
    Inventor: Alfredo Rivera