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Patent
   D619201
Priority
Jan 16 2009
Filed
Jul 16 2009
Issued
Jul 06 2010
Expiry
Jul 06 2024
Inventors
Westrum, T…
Assg.orig
Biowater T…
Assg.curr
Biowater T…
Entity
unknown
Referenced by
12
References
5
Maint.:
n/a
The ornamental design for device for biological purification of waste water, as shown and described.

FIG. 1 is a perspective view of a device for biological purification of waste water in accordance with my design;

FIG. 2 is a first side view of the device for biological purification of waste water in accordance with my design;

FIG. 3 is a second side view of the device for biological purification of waste water in accordance with my design;

FIG. 4 is a third side view of the device for biological purification of waste water in accordance with my design;

FIG. 5 is a fourth side view of the device for biological purification of waste water in accordance with my design;

FIG. 6 is a top plan view of the device for biological purification of waste water in accordance with my design; and,

FIG. 7 is a bottom plan view of the device for biological purification of waste water in accordance with my design.
INVENTORS:

Westrum, Thorbjørn

THIS PATENT IS REFERENCED BY THESE PATENTS:
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11426681, May 15 2015 Evolution Aqua Limited Mechanical filter element, apparatus and method
11951420, May 16 2016 Evolution Aqua Limited Filter apparatus and method
D661778, Feb 24 2011 Headworks Bio Inc.; HEADWORKS BIO INC Moving bed bioreactor carrier
D697168, Dec 22 2010 Biowater Technology AS Grate
D697169, Dec 22 2010 Biowater Technology AS Biofilm media
D700274, Aug 09 2011 DE NORA MARINE TECHNOLOGIES, LLC Hypochlorite injector
D830498, May 18 2016 Juraj, Csefalvay Rectangular waste water purifying device
D830499, May 18 2016 Juraj, Csefalvay Oval waste water purifying device
D872224, May 14 2018 Nexom Inc. Biogrowth support media
D946109, May 16 2019 Evolution Aqua Limited Water filter
D968559, May 16 2019 Evolution Aqua Limited Water filter
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
4925561, Mar 31 1988 Tsuchiya Mfg. Co., Ltd. Composite planar and triangularly pleated filter element
6889963, Feb 28 2002 Saint-Gobain Norpro Corporation Ceramic packing element
7189323, Jul 22 2004 Veolia Water Solutions & Technologies Support Method for biological purification of water using a carrier material
D253273, May 11 1977 Trivet
NO20080109,
ASSIGNMENT RECORDS    Assignment records on the USPTO
//
Executed onAssignorAssigneeConveyanceFrameReelDoc
Jul 16 2009Biowater Technology AS(assignment on the face of the patent)
Aug 13 2009WESTRUM, THORBJORNBiowater Technology ASASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0232360418 pdf
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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