Patents Examined by Shah: Mukund J.
  • Patent number: 5030629
    Abstract: A method and compositions for enhancing absorption of topically administered physiologically active agents through the skin and mucous membranes of humans and animals in a transdermal device or formulation for local or systemic use, comprising a therapeutically effective amount of a pharmaceutically active agent and a non-toxic, effective amount of penetration enhancing agent of the formula I: ##STR1## wherein R is a saturated or unsaturated, straight or branched, cyclic or acyclic hydrocarbon group with from 1 to 19 carbon atoms, alkoxyalkyl, haloalkyl, specifically trifluoromethyl, alkoxy, amino, alkylamino and acylamino; R' and R" are hydrogen, alkyl, trifluoromethyl, alkoxyalkyl, aminoalkyl, alkyl- and acylaminoalkyl, carboxy, carbalkoxy, hydroxyalkyl or lower alkyl ester thereof; X is O or NR.sub.1 wherein R.sub.
    Type: Grant
    Filed: August 11, 1989
    Date of Patent: July 9, 1991
    Inventor: Vithal J. Rajadhyaksha
  • Patent number: 4994569
    Abstract: Compounds of formula: ##STR1## in which R.sub.1 denotes 2-indolyl, 2-thienyl, 3-furyl, naphthyl, phenyl, or phenyl substituted with one or two halogen atoms, with alkoxy, alkyl, nitro, acylamino, alkylthio, acyl, trifluoromethoxy, morpholino, piperidino, amino, mono- or dialkylamino or, at the 3- and 4-positions, with methylenedioxyR.sub.2 denotes phenyl or phenyl substituted with one or two halogen atoms, with one or two alkyl radicals, with alkoxy, nitro, trifluoromethyl or hydroxy or, at the 3- and 4-positions, with methylenedioxy andeither X denotes oxygen andR.sub.3 denotes phenyl R.sub.4, R.sub.5 and R.sub.6 denote hydrogen, orR.sub.3 and R.sub.4 denote hydrogen, R.sub.5 denotes hydrogen or methyl and R.sub.6 denotes phenyl or one of R.sub.3 and R.sub.4 denotes methyl and the other hydrogen, R.sub.5 denotes hydrogen and R.sub.6 denotes phenyl,or X denotes sulphur, R.sub.3 denotes phenyl and R.sub.4, R.sub.5 and R.sub.
    Type: Grant
    Filed: November 1, 1989
    Date of Patent: February 19, 1991
    Assignee: Rhone-Poulenc Sante
    Inventors: Jean-Dominique Bourzat, Claude Cotrel, Claude Guyon, Philippe Pitchen
  • Patent number: 4859556
    Abstract: An electrophotographic photoconductor is disclosed which comprises an electroconductive support material and a photosensitive layer comprising at least one of the stilbene compounds of the formula ##STR1## wherein R.sup.1 represents hydrogen or ##STR2## R.sup.2 represents hydrogen, an alkyl group or a substituted or unsubstituted phenyl group; A represents ##STR3## when R.sup.1 is hydrogen; while, when R.sup.1 is ##STR4## A represents ##STR5## a 9-anthryl group or a substituted or unsubstituted N-alkylcarbazolyl group, wherein R.sup.3 represents hydrogen, an alkyl group, an alkoxy group, a halogen or a substituted amino group represented by ##STR6## in which R.sup.4 and R.sup.5 independently represent an alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group, and R.sup.4 and R.sup.5 may form a ring in combination, and m is an integer of 0 through 3 and n is an integer of 0 or 1, provided that, when R.sup.1 is hydrogen and n=0, A is ##STR7## in which R.sup.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: August 22, 1989
    Assignee: Ricoh Company, Ltd.
    Inventor: Masaomi Sasaki
  • Patent number: 4717649
    Abstract: Fast acting and ecologically advantageous compositions for the bleach-fixing of photographic elements are comprised of an aqueous alkaline solution of a peroxy compound and an ammonium or amine salt of a weak acid.
    Type: Grant
    Filed: April 18, 1986
    Date of Patent: January 5, 1988
    Assignee: Eastman Kodak Company
    Inventors: Jeffrey L. Hall, Jacob J. Hastreiter, Jr.
  • Patent number: 4534875
    Abstract: Heat exchange fluids are improved by incorporating therein a viscoelastic surfactant composition. The viscoelastic surfactant is employed in an amount sufficient to reduce the friction experienced by the heat transfer fluid in a heat transfer apparatus while providing good heat transfer. The improved fluids are useful in district heating applications.
    Type: Grant
    Filed: January 13, 1984
    Date of Patent: August 13, 1985
    Assignee: The Dow Chemical Company
    Inventor: Gene D. Rose