Coated polydivinylbenzene beads

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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Details

C525S359100, C525S359300

Reexamination Certificate

active

07396883

ABSTRACT:
The present invention provides novel, polymeric supports, methods of making, and methods of using the supports, that have a fluorinated, amidated surface. The supports include polymeric microbeads, thin layers or membranes, plates, monoliths and the like. The supports are useful as packing materials for normal phase, reverse phase, and size exclusion chromatography, and provide high speed separation of analytes with excellent resolution. The fluorinated, amidated surface may include a composition comprising a plurality of repeating units, for example, having the following structure:

REFERENCES:
Jordi, Howard, “Jordi Gel Columns for Size Exclusion Chromatography,” InColumn Handbook for Size Exclusion Chromatography, Chi-San Wu, ed. (San Diego, CA: Academic Press), pp. 367-386, (1999).
Neue, Uwe Dieter, “Waters Columns for Size Exclusion Chromatography,”, InColumn Handbook for Size Exclusion Chromatography, Chi-San Wu, ed. (San Diego, CA: Academic Press), pp. 325-341, (1999).
Chem Abstracts (CAS) Search Results, 7 pages, including Cover sheet/Email from CAS Search Agent Todd Hoitink, explaining that he retrieved no relevant answers for either his structure search or his text search. (The referenced CAS Search was done after B.Hurwitz's search was found to have been done incorrectly.), Feb. 14, 2003.

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