Patents by Inventor Lajos Trezl

Lajos Trezl 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).

  • Highly efficient tobacco smoke filter
    Patent number: 5060672
    Abstract: The invention relates to a novel, highly efficient tobacco smoke filter provided with mechanically (fibrous) and/or adsorptively filtering materials as well as chemosorptively filtering components, which comprises a synergistic composition containing at least one of a compound having a high nucleophilic additivity, capable of chemically reacting and stable adduct forming with excited and ground-level aldehydes not filtered out by the mechanically and/or adsorptively filtering materials; and at least one of a compound containing ##STR1## enediol structural moieties, wherein the enediol type compound or its combination suitably amount to at least 50% by weight of the other chemosorptive components and 40 to 300% by weight of the adsorptively filtering materials.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: October 29, 1991
    Assignee: Pesci Dohanygyar
    Inventors: Sandor Irimi, Adam Molnar, Jozsef Gabor, Laszlo Toke, Lajos Trezl, Istvan Rusznak, Viktoria Horvath, Tibor Szarvas
  • Process for producing tobacco filter to adsorb materials harmful to health, especially aldehydes in the smoke of tobacco
    Patent number: 4753250
    Abstract: A process for producing cigarette filters comprising a compound containing L-ascorbic acid and having the compound added to an adsorptional filter material in a quantity of 5-200% of the amount of said adsorptional filter.
    Type: Grant
    Filed: October 18, 1985
    Date of Patent: June 28, 1988
    Assignee: Pecsi Dohanygyar
    Inventors: Istvan Bitter, Jozsef Gabor, Sandor Hernadi, Viktoria Horvath, Sandor Irimi, Adam Molnar, Istvan Rusznak, Lajos Trezl
  • Method for increasing the biological value of manures, dung-waters, organic wastes and/or soils rich in lysine
    Patent number: 4534782
    Abstract: The invention relates to a new method for increasing the biological value of manures, dung-waters, organic wastes and/or soils rich in lysine. According to the invention manure, dung-water, an organic waste and/or soil rich in lysine, either of natural composition or supplemented with lysine, a lysine source and/or one or more agricultural chemical(s), is treated with at least 0.01 mole of formaldehyde or an equivalent amount of a formaldehyde source, calculated for one mole of free or bound lysine present.The treatment according to the invention results in a significant increase of plant growth and crop yield.
    Type: Grant
    Filed: October 6, 1981
    Date of Patent: August 13, 1985
    Assignees: Magyar Tudomanyos Akademia Kozponti Hivatala, Lenin Mezogazdasagi Termeloszovetkezet
    Inventors: Istvan Rusznak, Lajos Trezl, Dezso Foldesi, Bela Szabo, Imre Bodi, Szilveszter Csaszar, Mihaly Szopko, Mihaly Gombar, Gabriella Kovacs, Erno Tyihak
  • Compounded plastic system
    Patent number: 4116897
    Abstract: A compounded plastic system containing 3 to 90% by weight of a crystalline polyolefine, 0.4 to 80% by weight of a non-crystalline polyolefine, 25 to 90% by weight of a pigment and/or filling agent, 0.5 to 10% by weight of surfactants, and optionally other polymers, wherein the system contains two surfactants of different HLB-values, the one surfactant having a HLB-value lower than 9 and the other surfactant having a HLB-value higher than 9, both surfactants being heat-resistant up to at least 160.degree. C.The compounded plastic system according to the invention retains the properties of the starting system even when admixed with widely varying amounts of filling agents, and even more, in certain respects it possesses improved characteristics.
    Type: Grant
    Filed: October 1, 1976
    Date of Patent: September 26, 1978
    Assignee: Tiszai Vegy Kombinat
    Inventors: Andor Huszar, Geza Szekely, Istan Rusznak, Lajos Trezl, Gyorgy Bertalan, Ilona Zaoui nee Serfozo, Imre Molnar