Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Molecular weight
Reexamination Certificate
2005-03-22
2005-03-22
Cygan, Michael (Department: 2855)
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Molecular weight
C210S659000
Reexamination Certificate
active
06868715
ABSTRACT:
A rapid analysis method for the determination of polymer average molecular weight separates the polymer's high molecular weight fraction and determines its average molecular weight using a molar mass detector and a concentration detector. The method avoids time consuming sample preparation, allows for separation of interfering low molecular weight components, and is suitable for automation.
REFERENCES:
patent: 3522725 (1970-08-01), Waters
patent: 4178103 (1979-12-01), Wallace
patent: 4616927 (1986-10-01), Phillips et al.
patent: 5129723 (1992-07-01), Howie et al.
patent: 5214073 (1993-05-01), Fukawa et al.
patent: 5214183 (1993-05-01), Fyvie et al.
patent: 5414144 (1995-05-01), Watanabe et al.
patent: 5528366 (1996-06-01), Shortt
patent: 5530540 (1996-06-01), Wyatt et al.
patent: 5840256 (1998-11-01), Demers et al.
patent: 5846396 (1998-12-01), Zanzucchi et al.
patent: 5854084 (1998-12-01), Drukier et al.
patent: 5854684 (1998-12-01), Stabile et al.
patent: 5938932 (1999-08-01), Connelly et al.
patent: 5985356 (1999-11-01), Schultz et al.
patent: 6045671 (2000-04-01), Wu et al.
patent: 6175409 (2001-01-01), Nielsen et al.
patent: 6176952 (2001-01-01), Maugans et al.
patent: 6235844 (2001-05-01), Dadgar et al.
patent: 6260407 (2001-07-01), Petro et al.
patent: 6265226 (2001-07-01), Petro et al.
patent: 6294388 (2001-09-01), Petro
patent: RE37400 (2001-10-01), Canich
patent: 6296771 (2001-10-01), Miroslav et al.
patent: 6303688 (2001-10-01), Schauder
patent: 6329450 (2001-12-01), Ogoe et al.
patent: 6344172 (2002-02-01), Afeyan et al.
patent: 6413431 (2002-07-01), Abedi
patent: 6627453 (2003-09-01), Hindsgaul et al.
Allcock, H. R. and Lampe, F. W. Contemporary Polymer Chemistry, Prentice Hall, 2ndedition, 1990 (no month), p. 29.*
U.S. provisional application No. 60/157,338, filed on Oct. 1,1999.*
Knobloch, James E. et al. Analytical Biochemistry vol. 245, Jun. 1997, pp. 231-241.*
BH Zimm,J. Chem. Phys., “Apparatus and Methods for Measurement and Interpretation of the Angular Variation of Light Scattering; Preliminary Results on Polystyrene Solutions”, vol. 16, pp. 1099-1116 (1948), Dec. 1948.
PJ Wyatt,Analytica Chimica Acta, “Light Scattering and The Absolute Characterization of Macromolecules”, vol. 272, pp. 1-40 (1993), Jan. 1993.
TH Mourey, SM Miller and ST Balke,Journal of Liquid Chromatography, “Size Exclusion Chromatography Assessment Utilizing Coupled Molecular Weight Detectors”, vol. 13, pp. 435-452 (1990), Dec. 1970.
WW Yau and SW Rementer,Journal of Liquid Chromatography, “Polymer Characterization by SEC-Viscometry: Molecular Weight, Size and Intrinsic Viscosity Distribution”, vol. 13, pp. 627-675-452 (1990), Feb. 1990.
Carnahan James Claude
Gundlach Paul Edward
Caruso Andrew J.
Cygan Michael
Freedman Philip D.
General Electric Company
LandOfFree
Method and apparatus for rapid determination of polymer... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for rapid determination of polymer..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for rapid determination of polymer... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3455740