Patent EP0105375A1 successfully refreshed from Google Patents.
EP0105375A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Oxide-containing magnetic material capable of being sintered at low temperatures
Assignee: FDK Corp
•
Filing: 1983-02-23
•
Granted: —
•
Expires: 2003-02-23
Abstract
Abstract An oxide-containing magnetic material capable of being sintered at low temperatures, which is prepared by adding 0.1 to 5 wt % of a glass containing 3 to 50 mol % Li 2 O,10 to 97 mol % B 2 O 3 and 0 to 70 mol % Si0 2 to ferrite containing 0.5 mol % or more Li 2 0. In particular, the use of a glass containing 10 to 28 mol % Li 2 O, 34 to 66 mol % B 2 O 3 , and 15 to 45 mol % SiO 2 lowers the sintering temperature to 1000°C or less.
Inventors
- 👤 Michihiro Torii
- 👤 Tomoyoshi Kosaka
- 👤 Takeo Maeda
- 👤 Hiroshi Rikukawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 16:30
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/34; H01F1/36; H01F1/37; C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2608; C04B35/2616; C04B35/2625; C04B35/265; C04B35/622; C04B35/64
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
54 words
A low temperature sinterable oxide magnetic material prepared by adding 0.1 to 5% by weight of glass containing 3 to 50 mol% of Li 2 0, 10 to 97 mol% of B 2 0 3 and 0 to 70 mol% of Si0 2 to ferrite containing at least 0.5 mol% of Li 2 0.
Claim 2
Dependent Claim
54 words
A low temperature sinterable oxide magnetic material prepared by adding 0.1 to 5% by weight of glass containing 3 to 50 mol% of Li 2 0, 10 to 97 mol% of B 2 0 3 and 0 to 70 mol% of Si0 2 to ferrite containing at least 0.5 mol% of Li 2 0.
Claim 3
Dependent Claim
34 words
The magnetic material according to claim 1, wherein said glass contains 10 to 28 mol% of Li 2 0, 34 to 66 mol% of B203, and 15 to 45 mol% of Si0 2 .
Claim 4
Dependent Claim
30 words
The magnetic material according to claim 1, wherein said ferrite contains 20 mol% of Li 2 0, 10 mol% of ZnO, and 70 mol% of Fe 2 O 3 .
Claim 5
Dependent Claim
30 words
The magnetic material according to claim 1, wherein said ferrite contains 2.6 mol% of Li 2 0, 19.0 mol% of MgO, 3.2 mol% of MnO, and 22.1 mol% of ZnO.
Claim 6
Dependent Claim
38 words
The magnetic material according to claim 1, wherein said ferrite contains 5 mol% of Li 2 O, 8 mol% of NiO, 5 mol% of CuO, 33 mol% of ZnO, and 49 mol% of Fe 2 0 3 .
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.