Chemistry: physical processes – Physical processes – Crystallization
Reexamination Certificate
2008-01-29
2008-01-29
Kunemund, Robert (Department: 1722)
Chemistry: physical processes
Physical processes
Crystallization
C023S30500F, C134S005000, C134S013000, C134S018000, C422S245100, C422S105000, C117S068000, C117S069000
Reexamination Certificate
active
10333721
ABSTRACT:
The present invention relates to the use of an optical line detector for regulating the position of the wash front and/or of the build-up front of the crystal bed of a wash column in a melt crystallization process and a corresponding regulation method. The line detector, for example a CCD camera or a linear array of reflection probes, is arranged in such a way that optical properties of the crystal bed can be detected continuously in a region running parallel to the longitudinal axis of the wash column, this region covering the desired setpoint position of the wash front or of the build-up front.
REFERENCES:
patent: 4914310 (1990-04-01), Jarofski
patent: 5569808 (1996-10-01), Hotier et al.
patent: 197 41 307 (1999-04-01), None
patent: 0 491 558 (1992-06-01), None
patent: 2 023 564 (1980-01-01), None
patent: 60 195437 (1985-10-01), None
patent: 98 27240 (1998-06-01), None
Derwent Abstract DE 19741307A, Apr. 1999.
U.S. Appl. No. 10/333,721, filed Jan. 24, 2003, Heilek et al.
U.S. Appl. No. 10/494,721, filed May. 6, 2004, Hammon, et al.
Baumann Dieter
Eck Bernd
Heilek Jörg
BASF - Aktiengesellschaft
Kunemund Robert
LandOfFree
Regulation of a wash column in a melt crystallization process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Regulation of a wash column in a melt crystallization process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Regulation of a wash column in a melt crystallization process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3935359