Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2011-04-12
2011-04-12
Boykin, Terressa M (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C264S176100, C264S219000, C428S035700, C428S040100, C428S480000, C528S179000, C528S180000, C528S182000, C528S194000
Reexamination Certificate
active
07923525
ABSTRACT:
A polyester resin and a fabrication method thereof are provided. The fabrication method includes providing a diphenol monomer and a diacid monomer. The diphenol monomer is acetylated and then melt pre-polymerized with diacid monomer to form a pre-polymer. Then, the pre-polymer is polymerized by solid state polymerization to form a heat-resistant and transparent polyester resin.
REFERENCES:
patent: 5164478 (1992-11-01), Lee et al.
Kao Hsin-Ching
Lin Chih-Hsiang
Boykin Terressa M
David Pai Chao-Chang
Industrial Technology Research Institute
Pai Patent & Trademark Law Firm
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