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:
Jul. 01, 2014
Filed:
Dec. 13, 2011
Anu Chopra, Pittsburgh, PA (US);
Barry Van Gemert, Delmont, PA (US);
Wenjing Xiao, Murrysville, PA (US);
Huayun Yu, Monroeville, PA (US);
Anu Chopra, Pittsburgh, PA (US);
Barry Van Gemert, Delmont, PA (US);
Wenjing Xiao, Murrysville, PA (US);
Huayun Yu, Monroeville, PA (US);
Transitions Optical, Inc., Pinellas Park, FL (US);
Abstract
The present invention relates to a method of making indeno-fused naphthol materials, that involves, with some embodiments, forming an indanone acid intermediate, which can be represented by the following general Formula V, With Formula V, m is from 0 to 4, and Rfor each m, Rand Rcan each be independently selected from, for example, hydrogen and hydrocarbyl. The present invention also relates to a method of making an indeno-fused naphthopyran that involves an indanone acid intermediate synthetic route.