Sintered ferrite magnet and motor provided therewith

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9589713
APP PUB NO 20150255197A1
SERIAL NO

14638635

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A sintered ferrite magnet comprises a main phase of an M type Sr ferrite having a hexagonal crystal structure. An amount of Zn is 0.05 to 1.35 mass % in terms of ZnO, the sintered ferrite magnet does not substantially include a rare-earth element (R), and the following Formula (1) is satisfied, where a total amount of Sr, Ba and Ca is M3 in terms of mol, a total amount of Fe, Co, Mn, Zn, Cr and Al is M4 in terms of mol, and an amount of Si is M5 in terms of mol.

description='In-line Formulae' end='lead'0.5≦{M3−(M4/12)}/M5≦4.8  (1).description='In-line Formulae' end='tail'

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
TDK CORPORATIONTOKYO 103-6128

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Minachi, Yoshihiko Tokyo, JP 27 314
Murakawa, Yoshitaka Tokyo, JP 32 367
Taguchi, Hitoshi Tokyo, JP 31 320
Tanigawa, Naoharu Tokyo, JP 3 82

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Sep 7, 2028
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00