Ferrite carrier for electrophotographic developer and electrophotographic developer

United States of America Patent

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Sep 27, 2011
Grant Date
Jul 17, 2008
app pub date
Jan 16, 2008
filing date
Jan 16, 2007

priority date (Note)
Expired

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Abstract

O and MgO is less than 1 mol %; the content of the elements other than Li, Mg, Fe and O is 2 % by weight or less; and further, the content of Mn in terms of element is 1000 to 9000 ppm.

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Patent Owner(s)

Patent Owner	Address
POWDERTECH CO LTD	KASHIWA-SHI CHIBA 277-8557

International Classification(s)

G03G:ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

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[Patents Count]

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Inventor Name	Address	# of filed Patents	Total Citations
Kayamoto, Kanao	Kashiwa, JP	17	115
Kobayashi, Hiromichi	Kashiwa, JP	60	546
Sugiura, Takao	Kashiwa, JP	31	97

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Maximum number of portfolios	5 (maximum)	10 (maximum)	100 (maximum)	Unlimited
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Ferrite carrier for electrophotographic developer and electrophotographic developer

Number of patents in Portfolio can not be more than 2000

United States of America Patent

12014852

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PATENT NO	8026033
APP PUB NO	20080171281A1
SERIAL NO	12014852
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
September 27, 2011	US,8026033,B2 US8026033B2	GRANTED PATENT AS SECOND PUBLICATION
July 17, 2008	US,20080171281,A1 US20080171281A1	FIRST PUBLISHED PATENT APPLICATION

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12014852

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Importance

Abstract

First Claim

Family

Patent Owner(s)

International Classification(s)

Inventor(s)

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Patent Citation Ranking

Forward Cite Landscape

Maintenance Fees

Full Text

Legal Events

Matter Detail

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Load PAIR data

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File History PDF

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Important Notes on Latency of Status data

Important Note on Priority Date data