The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 2002
Filed:
Dec. 31, 1998
Frank J. Hughes, Edina, MN (US);
J. Thomas Ippoliti, St. Paul, MN (US);
BMC Vision-Ease Lens, Inc., Minneapolis, MN (US);
Abstract
The present invention relates to naphthopyrans, particularly 3,3-[substituted]-naphtho[2,1-b]pyrans and 2,2-[substituted]-naphtho[1,2-b]pyrans and particularly to novel substitution on the 3-position and 2-position, respectively, of these naphthopyrans. It has been found that there are classes and types of substitution on the 3-position and 2-position (especially combinations of 3,3-substitution and 2,2-substitution) which are novel. Some of these substitutions provide particularly desirable properties. In particular, the present invention relates to naphthopyrans wherein one 3-substituent or one 2-substituent comprises a phenyl group (including phenyl, substituted phenyl, biphenyl or substituted biphenyl) and the other 3-position or other 2-position substituent comprises a substituted or unsubstituted group selected from the group consisting of anthranilyl, azepinyl, benzoxazolyl, diazepinyl, dioazlyl, imidazolidinyl, imidazolyl, imidazolinyl, indazolyl, indoleninyl, indolinyl, indolizinyl, indolyl, indoxazinyl, isobenzazolyl, isoindolyl, isooxazolyl, isooxazyl, isopyrroyl, isoquinolyl, isothiazolyl, morpholino, morpholinyl, oxadiazolyl, oxathiazolyl, oxathiazyl, oxathiolyl, oxatriazolyl, oxazolyl, piperazinyl, piperazinyl, piperazyl, piperidyl, purinyl, pyranopyrrolyl, pyrazinyl, pyrazolidinyl, pyrazolinyl, pyrazolyl, pyrazyl, pyridazinyl, pyridazyl, pyridyl, pyrimidinyl, pyrimidyl, pyridenyl, pyrrolidinyl, pyrrolinyl, pyrroyl, quinolizinyl, quinuclidinyl, quinolyl, thiazolyl, triazolyl, and triazyl.