Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2005-11-01
2005-11-01
Wilson, James O. (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
C536S056000, C536S095000, C536S099000
Reexamination Certificate
active
06960660
ABSTRACT:
A water-soluble cellulose ether is selected by judging whether the number of undissolved fibers having a size of 16–200 μm is up to 350 fibers/2 ml in a 0.1 wt % aqueous solution of the cellulose ether at 25° C. This water-soluble cellulose ether forms an aqueous solution which can be filtered without clogging and can form a very thin film without defectives.
REFERENCES:
patent: 4491661 (1985-01-01), Bredereck et al.
patent: 4954268 (1990-09-01), Just et al.
patent: 0 081 406 (1983-06-01), None
patent: 427386 (1935-04-01), None
patent: 53-145893 (1978-12-01), None
patent: 1-217001 (1989-08-01), None
patent: 5-345801 (1993-12-01), None
patent: 62-56171 (1994-09-01), None
Kjoniksen, Anna-Lena et al., Macromolecules; vol. 33, pp. 877-886 (Jan. 13, 2000).
Cellulose Society Ed., “Encyclopedia of Cellulose,” 2000, Asakura Publishing Co., Ltd.
Hayakawa Kazuhisa
Niinobe Shingo
Birch & Stewart Kolasch & Birch, LLP
Krishnan Ganapathy
Shin-Etsu Chemical Co. , Ltd.
Wilson James O.
LandOfFree
Water-soluble cellulose ether having improved filtering... 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 cellulose ether having improved filtering..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water-soluble cellulose ether having improved filtering... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3471970