Polyquaternium-1 synthesis methods and associated formulations

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymer of an ethylenically unsaturated reactant with a...

Reexamination Certificate

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C424S078040, C514S642000

Reexamination Certificate

active

07999064

ABSTRACT:
A multipurpose solution for contact lens care, comprising: an aqueous liquid medium; a quaternary ammonium polymer having an average molecular weight as determined by the proton NMR method of at least 28 k, and methods for making the same.

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patent: 2008/0262194 (2008-10-01), Yu
patent: 1852133 (2007-11-01), None
Registry Entry for polyquaternium-1.

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