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.

Date of Patent:
Apr. 21, 2015

Filed:

Sep. 27, 2005
Applicants:

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);

Inventors:

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);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08H 7/00 (2011.01); C09K 21/00 (2006.01); C08K 5/357 (2006.01); C07D 413/14 (2006.01); C09K 21/10 (2006.01); H05K 1/03 (2006.01);
U.S. Cl.
CPC ...
C08K 5/357 (2013.01); C07D 413/14 (2013.01); C09K 21/10 (2013.01); H05K 1/0373 (2013.01);
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.


Find Patent Forward Citations

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Tietze, Roger. (2015). Benzoxazine compounds derivated from phenolphthalein having flame-retardant properties and a process for their preparation (U.S. Patent No. 9012543). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9012543

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