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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
FUJINON CORPORATION	1-324 UETAKE-CHO KITA-KU SAITAMA-SHI SAITAMA

International Classification(s)

• G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Miyano, Hitoshi	Saitama, JP	62	2211
# of filed Patents : 62 Total Citations : 2211

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Patent Citation Ranking

• 3 Citation Count
• G02B Class

• 3.47 % this patent is cited more than
• 14 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
March 29, 2011	US,7916399,B2   US7916399B2	GRANTED PATENT AS SECOND PUBLICATION
May 20, 2010	US,20100123957,A1   US20100123957A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9878979

Fine purification of isophoronenitrile by melt crystallization

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Abstract

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The present invention relates to the fine purification of isophoronenitrile (IPN) by melt crystallization.

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Description

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Claims

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Claims data not available

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Legal Events

 

• STCH2013
• FP2013
• LAPS2013
• REMI2013
• FPAY2008
• CC2005
• I2005
• FEPP2004
• F2000
• PD1998

Date	Code	Event	Description
Jul 15, 2013	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Jun 14, 2013	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Jun 14, 2013
Jun 14, 2013	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Jan 28, 2013	REMI	MAINTENANCE FEE REMINDER MAILED
Nov 13, 2008	FPAY	FEE PAYMENT	year of fee payment: 4
Sep 06, 2005	CC	CERTIFICATE OF CORRECTION
Jun 14, 2005	I	Issuance
Oct 31, 2004	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Jun 07, 2000	F	Filing
Sep 25, 1998	PD	Priority Date