Patents by Inventor Pierre Lareginie

Pierre Lareginie 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).

  • Photochromic compounds and methods for their use
    Patent number: 5936016
    Abstract: The present invention relates to photochromic compounds of spiro?indoline?2,3'!-naphthoxazine! structure, characterized in that they contain, in the 6' position, a group R.sub.6 chosen from the following groups: cyano and phenylsulfonyl linked via the sulfur atom to carbon 6', and methods of using such compounds.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: August 10, 1999
    Assignee: Essilor International Compagnie Generale D'Optique
    Inventors: Pierre Lareginie, Vladimir Lokshin, Andre Samat, Robert Guglielmetti, Elena Zaballos Garcia
  • Spirooxazines and use thereof in the field of ophthalmic optics
    Patent number: 5529725
    Abstract: The invention relates to photochromic compounds of general formula: ##STR1## in which: R.sup.a and R.sup.b denote hydrogen; alkyl; OR, SR, COR or COOR where R denotes hydrogen, alkyl, aryl or heteroaryl; a group NR.sub.1 R.sub.2 where R.sub.1 R.sub.2 denotes hydrogen, C.sub.4 -C.sub.7 alkyl or cycloalkyl, aryl, or form with the nitrogen a C.sub.4 -C.sub.7 heterocycle; NO.sub.2, CN, SCN or a halogen; a group SO.sub.3 R' where R' denotes hydrogen or an alkali metal; a mono- or polyhaloalkyl; m denotes an integer from 1 to 4 and n is equal to 1 or 2;Cy denotes an aromatic ring or an aromatic or non-aromatic heterocycle;R.sup.c denotes an alkyl, allyl, phenyl or arylalkyl group which is mono- or disubstituted with alkyl, alkoxy or NO.sub.2 ; an alicyclic, an aliphatic hydrocarbon containing one or more hetero atoms;R.sup.d, R.sup.e, R.sup.f and R.sup.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: June 25, 1996
    Assignee: Essilor International
    Inventors: Robert Guglielmetti, Andre Samat, Pierre Lareginie