Patents by Inventor Roza Szekely

Roza Szekely 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 intensification of grinding stone coal
    Patent number: 4770350
    Abstract: A process for intensifying the grinding of coal by, prior to grinding, adjusting the water content of the coal to a value 0.05-2.5% by weight greater than the water content of the coal in an air-dry state.
    Type: Grant
    Filed: September 15, 1987
    Date of Patent: September 13, 1988
    Assignee: Magyar Szenhidrogenipari Kutato-Fejleszto Intezet
    Inventors: Eva Szekely, Roza Szekely
  • Fire-fighting powders
    Patent number: 4560485
    Abstract: The invention relates to fire-fighting powders providing per se or in mixtures an effective extinction of flames and embers.The fire-fighting powder according to the invention comprises(a) at least one member of a group consisting of potassium, sodium and ammonium sesquicarbonate as active ingredient and optionally one or more metal salt catalysts; or(b) at least one metal salt catalyst in addition to substances having per se known extinguishing effect;and optionally one or more other substances having per se known extinguishing effect as well as one or more additives generally used in the art.The fire-fighting powders according to the invention have enhanced extinguishing effect as compared to the known extinctors.
    Type: Grant
    Filed: April 16, 1984
    Date of Patent: December 24, 1985
    Assignee: Magyar Szenhidrogenipari Kutato-Fejleszto Intezet
    Inventors: Eva Szekely, Roza Szekely