Patents by Inventor Alajos Kalman

Alajos Kalman 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 the inhibition of spread of fire and for protection against effect of fire in burning buildings
    Patent number: 4850173
    Abstract: The invention relates to a process for inhibiting spread of fire in buildings on fire and for protection against the effect of fire wherein heat insulating layer is applied onto the surface of movable and fixed building structures, involving the use of heat insulating materials in the joints of movable and fixed building structures wherein as heat insulating material heat-absorbent hydrophylic silica and/or aluminosilicate based adsorbent, preferably synthetic A-, X- or P-zeolite is used.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: July 25, 1989
    Assignee: Magyar Tudomanyos Akademia Kozponti Kemiai Kutato Intezete and Epitestudomanyi Intezet
    Inventors: Herman Beyer, Gabriella Borbely, Sandor Dombi, Alajos Kalman, Gyula Meszaros, Peter Miasnikov, Pal Rozsa
  • 2H-azeto[2,1-a]-isoquinoline derivatives and pharmaceutical compositions containing them
    Patent number: 4622327
    Abstract: The invention relates to new 2H-azeto[2,1-a]isoquinoline derivatives of formula (I) ##STR1## wherein R.sup.1 and R.sup.2 represent hydroxyl or alkoxy having from 1 to 6 carbon atoms,R.sup.3 is hydroxyl, halogen or an ##STR2## group, whereinX is oxygen or sulfur,R.sup.4 is optionally substituted phenyl,and acid addition, metal and quaternary salts thereof.According to the invention the new compounds are prepared by cyclization of the corresponding compounds of formula (II), ##STR3## wherein R.sup.1, R.sup.2 and R.sup.3 are as defined above, and Hal is halogen.Compounds of formula (I) are pharmaceutically active, in particular are potent analgesic and antipyretic agents.
    Type: Grant
    Filed: October 25, 1984
    Date of Patent: November 11, 1986
    Assignee: Richter Gedeon Vegyeszeti Gyar R.T.
    Inventors: Gabor Bernath, Jeno Kobor, Alajos Kalman, Pal Sohar, Ferenc Fulop, Elemer Ezer, Gyorgy Hajos, Eva Palosi, Laszlo Denes, Laszlo Szporny
  • 1-(hydroxymethyl)-1,6,7,11b-tetrahydro-2H,4H-[1,3]oxazino- or -thiazino-[4,3-a]isoquinoline derivatives and pharmaceutical compositions containing them
    Patent number: 4605653
    Abstract: The invention relates to 1-(hydroxymethyl)-1,6,7,11b-tetrahydro-2H,4H-[1,3]oxazino- or -thiazino-[4,3-a]isoquinoline derivatives of the formula (I), ##STR1## wherein R.sup.1 and R.sup.2 are alkoxy having from 1 to 6 carbon atoms,X is oxygen or sulfur,Y is .dbd.O, .dbd.S or an .dbd.NR.sup.3 group, whereinR.sup.3 is hydrogen, alkyl having from 1 to 6 carbon atoms, cycloalkyl having from 3 to 8 carbon atoms or optionally substituted phenyl,and acid addition and quaternary salts thereof.
    Type: Grant
    Filed: March 19, 1985
    Date of Patent: August 12, 1986
    Assignee: Richter Gedeon Vegyeszeti Gyar R.T
    Inventors: Gabor Bernath, Jeno Kobor, Ferenc Folop, Attila Sohajda, Alajos Kalman, Elemer Ezer, Gyorgy Hajos, Eva Palosi, Laszlo Denes, Laszlo Szporny