Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Nitrogen-containing reactant
Reexamination Certificate
2005-11-01
2005-11-01
Hightower, P. Hampton (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Nitrogen-containing reactant
C528S423000, C528S425000, C525S410000, C525S417000, C525S540000, C524S800000, C524S801000
Reexamination Certificate
active
06960644
ABSTRACT:
A water-soluble block copolymer having a mass average molecular weight of 2500 to 800000 and comprising, within a molecule, a poly(ethylene imine) block unit and a poly(N-propionylethylene imine) block unit is a novel linear or star-shaped water-soluble block copolymer.
REFERENCES:
patent: 4224421 (1980-09-01), Streit et al.
patent: 4605707 (1986-08-01), Reimschuessel et al.
patent: 5641855 (1997-06-01), Scherr et al.
patent: 1400 555 (2004-03-01), None
patent: 63-065940 (1988-03-01), None
patent: 07-173284 (1995-07-01), None
patent: 8-120035 (1996-05-01), None
patent: 2002-194116 (2002-07-01), None
Biomacromolecules, 2001, 2, 70-79, “Polymer-Supported Lipid Bilayers on Benzophenone-Modified Substrates”, William W. Shen et al.
XP002258794: Shen et al; “Polymer-Supported Lipid Bilayers ...Substrates”; Biomacromolecules 2001, 2, 70-79.
European Search Report dated Nov. 10, 2003.
M. Sedlak et al.; “Synthesis of new class of double-hydrophilic blockcopolymers with calcium binding capacity as builders and for biomimetic structure control of minerals”;Macromolecular Chemistry and Physics; vol. 199; 1998; pp. 247-254./Dicussed in the specification.
Armstrong Kratz Quintos Hanson & Brooks, LLP
Hampton Hightower P.
Kawamura Institute of Chemical Research
LandOfFree
Water-soluble block copolymer and production method therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Water-soluble block copolymer and production method therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water-soluble block copolymer and production method therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3518298