Inductor devices – Coil or coil turn supports or spacers – Printed circuit-type coil
Reexamination Certificate
2009-05-11
2009-11-17
Nguyen, Tuyen (Department: 2832)
Inductor devices
Coil or coil turn supports or spacers
Printed circuit-type coil
Reexamination Certificate
active
07619500
ABSTRACT:
A common mode filter is provided as one in a three-layered structure with improved high-frequency characteristics. The common mode filter1has the three-layered structure including a first coil layer14,a second coil layer18,and a lead layer16.A first planar coil21and a second planar coil41of a substantially circular spiral shape are formed in the first and second coil layers14, 18,respectively. A first lead wire31and a second lead wire32formed in a lead layer16have a first straight portion31c and a second straight portion32c, respectively. The first straight portion31c is located on a straight line L1perpendicular to a plurality of first tangent lines to spirals22, 42at a plurality of respective intersection points with the spirals22, 42. The second straight portion32c is located on a straight line L2perpendicular to a plurality of second tangent lines to the spirals22, 42at a plurality of respective intersection points with the spirals22, 42.
REFERENCES:
patent: 6710694 (2004-03-01), Matsuta et al.
patent: 6998939 (2006-02-01), Nakayama et al.
patent: 7064629 (2006-06-01), Shoji
patent: 7091816 (2006-08-01), Ito et al.
patent: 7253713 (2007-08-01), Tomonari et al.
patent: 7408435 (2008-08-01), Nishikawa et al.
patent: 7446632 (2008-11-01), Tomonari et al.
patent: B2-3601619 (2004-12-01), None
patent: A-2005-159223 (2005-06-01), None
patent: A-2007-214448 (2007-08-01), None
patent: B1-4028884 (2007-12-01), None
Ito Tomokazu
Kamiyama Hiroshi
Karakame Tatsuya
Nakagomi Sho
Nishikawa Tomonaga
Nguyen Tuyen
Oliff & Berridg,e PLC
TDK Corporation
LandOfFree
Common mode filter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Common mode filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Common mode filter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4054502