Patents by Inventor Denes Kallo

Denes Kallo 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).

  • Process for preparing an agricultural fertilizer from sewage
    Patent number: 4772307
    Abstract: Contaminated water is contacted with an agent which contains salts or cations of mono-, di-, or trivalent metals in a maximum amount of 50 masspercent and rock granules containing at least 25 masspercent zeolite, preferably clinoptilolite and/or mordenite. The amount of metal salts respectively cations present in the parent zeolitic rock can be increased according to necessity by ion-exchange, adsorption and/or impregnation, i.e. by combination of these processes following eventual dehydration. The agent obtained is homogenized. The exhausted bed can be regenerated biologically or with aqueous solution of a potassium salt.
    Type: Grant
    Filed: August 20, 1987
    Date of Patent: September 20, 1988
    Inventors: Jeno Kiss, Adam Hosszu, Bala Deak, Denes Kallo, Janos Papp, Agnes Meszaros nee Kis, Mucsy, Gyorgy, Jozsef Olah, Gyorgy Urbanyi, Tivadar Gal, Istvan Apro, Czepek, Gyula, Ferenc Torocsik, Andras Lovas