Patents by Inventor Guena elle Harie

Guena elle Harie 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).

  • Ring spiro [fluorene-[2H]-benzopyranes] and their use in ophthalmic optics
    Patent number: 5604280
    Abstract: The invention concerns photochromic compounds with general formula (I): ##STR1## where R.sup.a, R.sup.b and R.sup.c represent hydrogen; alkyl, aryl, OR, SR, COR or COOR, where R represents hydrogen, alkyl or aryl, amino with formula NR.sub.1 R.sub.2, where R.sub.1 and R.sub.2 each represent hydrogen, alkyl, cycloalkyl, or aryl, R.sub.1 and R.sub.2 may together form a heterocycle containing four to seven members with the nitrogen atom and may intracyclically contain one or more heteroatoms selected from nitrogen, oxygen, sulphur, or a halogen atom; a mono- or polyhaloalkyl; an NO.sub.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: February 18, 1997
    Assignee: Essilor International Compagnie Generale D'Optique
    Inventors: Jean L. Pozzo, Robert Guglielmetti, Andr e Samat, Vladimir Lokshin, Guena elle Harie