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:
Feb. 10, 2015
Filed:
Jun. 06, 2012
Applicant:
Jyri Paulasaari, Espoo, FI;
Inventor:
Jyri Paulasaari, Espoo, FI;
Assignee:
Silecs OY, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 8/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A novel novolac prepared by acid catalyzed condensation between biphenols or bisphenofluorenes and fluorenone is presented. The polymers exhibit excellent oxidative thermal stability and high carbon content, suitable for dielectric, etch stop applications as spin-on material.