Inductor devices – Coil or coil turn supports or spacers – Printed circuit-type coil
Reexamination Certificate
2008-04-15
2008-04-15
Nguyen, Tuyen T. (Department: 2832)
Inductor devices
Coil or coil turn supports or spacers
Printed circuit-type coil
Reexamination Certificate
active
11240015
ABSTRACT:
A device includes: a pillar-shaped core consisting of a first magnetic insulating material that has two quadric prism segments at both ends thereof symmetrically and has a cylindrical segment, which has an external shape smaller than that of the quadric prism segments, coaxially between the two quadric prism segments; a resistance film that is formed in a substantially uniform thickness so as to cover an outer circumferential face of the pillar-shaped core; a spiral line segment having a predetermined number of circumferences that is formed in a portion present on the cylindrical segment of the resistance film by subjecting a spiral sulcus to laser trimming; an oxide film that is formed to cover at least a surface of a shoulder portion extending from a side to an upper surface of lines constituting the spiral line segment; an armor consisting of a second magnetic insulating material that is formed to cover a surface of the portion present on the cylindrical segment of the resistance film and such that an external shape the armor is a quadric prism shape; and a pair of external electrodes that are formed in a substantially equal thickness so as to cover surfaces of portions present on an end face and four sides of the respective quadric prism segments of the resistance film.
REFERENCES:
patent: 6525635 (2003-02-01), Murata et al.
patent: 6535095 (2003-03-01), Aoki et al.
patent: 6727792 (2004-04-01), Amada et al.
patent: 6856229 (2005-02-01), Ogawa et al.
patent: 7170379 (2007-01-01), Takayama et al.
patent: 2000-156622 (2000-06-01), None
Kakiuchi Ikuo
Maeda Masaru
Shiga Takashige
Takayama Manabu
Tosaka Shoichi
Knobbe Martens Olson & Bear LLP
Nguyen Tuyen T.
Taiyo Yuden Co. Ltd.
LandOfFree
Noise rejection device and cellular phone including the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Noise rejection device and cellular phone including the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise rejection device and cellular phone including the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3929769