Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2003-11-27
2009-11-24
Jagannathan, Vasu (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C528S288000, C528S318000, C528S328000, C524S606000, C523S118000
Reexamination Certificate
active
07622544
ABSTRACT:
A method for preparing polyester/polyamide polymers, resins and plastics from proteins is disclosed. Using nitrous acid or nitrous oxide, a protein is converted to a hydroxyl carboxyl polyamide protomer. Protomers are condensed through hydroxyl and carboxyl groups to make inter-protomer ester bonds, resulting in a polyester polyamide polymer, resin or plastic.
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Jagannathan Vasu
Mesh Gennadiy
Yissum Research Development Company of the Hebrew University of
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