Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Reexamination Certificate
2007-11-27
2007-11-27
Gakh, Yelena G. (Department: 1743)
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
C134S022120, C134S022140, C134S022180, C436S049000
Reexamination Certificate
active
10183591
ABSTRACT:
The invention concerns a device for cleaning pipette needles or stirrers, the device comprising a trough which holds cleaning fluid and whose lower region has a fluid duct for filling and/or emptying purposes and whose upper region has at least one feed pipe which leads into at least one nozzle directed into the trough interior. Advantageously, the device has a cylindrical trough and in insert with nozzles which is screwed into the trough. The invention further concerns a method of cleaning pipette needles or stirrers, the material to be washed being introduced into the trough interior and sprayed with a washing fluid. The device can also be used to flush the interior of a pipette needle.
REFERENCES:
patent: 3632974 (1972-01-01), Cowlard et al.
patent: 3871895 (1975-03-01), Adler
patent: 3614960 (1987-11-01), None
patent: 0602802 (1994-06-01), None
patent: 0661542 (1995-07-01), None
patent: 725279 (1996-08-01), None
patent: 0747689 (2002-01-01), None
patent: 62242858 (1987-10-01), None
Fürst Otto
Jäck Thomas
Jansen Paul
Weber Peter
Arent & Fox LLP
Gakh Yelena G.
Roche Diagnostics GmbH
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