Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form
Reexamination Certificate
2004-06-21
2008-03-25
Padmanabhan, Sreeni (Department: 1616)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Particulate form
C424S489000, C424S642000
Reexamination Certificate
active
07348029
ABSTRACT:
The present invention relates to a surface-modified nanoscale zinc oxide, where the surface modification involves coating with an oligo- or polyethylene glycol acid. This surface-modified zinc oxide is characterized in that it forms stable dispersions in a liquid medium. In addition, the present invention relates to a process for the production of surface-modified zinc oxide, and also to a process for the production of nanoscale zinc oxide dispersions.
REFERENCES:
patent: 5593781 (1997-01-01), Nass et al.
patent: 6676821 (2004-01-01), Hempelmann et al.
patent: 6710091 (2004-03-01), Womelsdorf et al.
patent: 2004/0033270 (2004-02-01), Kropf et al.
patent: 2004/0108220 (2004-06-01), Stephan et al.
patent: 1 165 574 (1964-03-01), None
patent: 199 07 704 (2000-08-01), None
patent: 1 112 964 (2001-07-01), None
patent: 962 919 (1964-07-01), None
patent: WO 93/21127 (1993-10-01), None
patent: WO 00/14302 (2000-03-01), None
patent: WO 00/50503 (2000-08-01), None
U.S. Appl. No. 10/872,808, filed Jun. 21, 2004, Sauer et al.
Gmelins, vol. 32, 8thEdition, Erganzungsband, p. 772 (1956).
Guo et al., Synthesis and Characterization of Poly(vinylpyrrolidone)-Modified Oxide Nano-particles, vol. 12, pp. 2268-2274 (2000).
C. E. Krill et al., “Estimating grain-size distributions in nanocrystalline materials from X-ray diffraction profile analysis”, Phil. Mag. A, vol. 77, No. 3, pp. 621-640 (1998).
L. Brus, “Electronic Wave Functions in Semiconductor Clusters: Experiment and Theory”, J. Phys. Chem. vol. 90, pp. 2555-2560 (1986).
Mosmann, “Rapid Colorimetric Assay for Cellular Growth and Surival: Application to Proliferatio and Cytotoxicity Assays”, Journal of Immunological Methods, vol. 65, pp. 55-63 (1983).
International Cosmetic Ingredient Dictionary and Handbook, 8thEdition, vol. 1, p. 527 (2000).
Liu et al., “Preparation of surface modified nanostructured ZnO and its photo-absorption characteristics”, AN 2000:635354 (2000).
Berber Mete
Bulto Carulla Victor
Elsässer Ralf
Hahn Horst
Heller Melita
George Konata M.
Henkel Kommanditgesellschaft auf Aktien
Padmanabhan Sreeni
Woodcock & Washburn LLP
LandOfFree
Surface-modified zinc oxide for the production of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Surface-modified zinc oxide for the production of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface-modified zinc oxide for the production of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3975522