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:
Apr. 21, 2015
Filed:
Sep. 27, 2005
Roger Tietze, The Woodlands, TX (US);
Dave Orser, Lodi, NJ (US);
Yefim Blyakhman, Brooklyn, NY (US);
Mark Bryant, The Woodlands, TX (US);
Bor-sheng Lin, Berkeley Heights, NJ (US);
Roger Tietze, The Woodlands, TX (US);
Dave Orser, Lodi, NJ (US);
Yefim Blyakhman, Brooklyn, NY (US);
Mark Bryant, The Woodlands, TX (US);
Bor-Sheng Lin, Berkeley Heights, NJ (US);
Huntsman Advanced Materials Americas LLC, The Woodlands, TX (US);
Abstract
The instant invention relates to 3,3'-bis(3,4-dihydro-3-phenyl-2H-1,3-benzoxazin-6-yl)-1(3H)-isobenzofuranone and analogues based on phenolphthalein, formaldehyde and a primary amine. Such compounds are, when cured to form polymeric networks, difficultly inflammable and resistant to high temperatures. Such compounds may especially be used in the production of printed wiring boards.