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

Patent Owner(s)

Patent Owner	Address
NEC NETWORK AND SENSOR SYSTEMS LTD	TOKYO

International Classification(s)

• H01J:ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Chiba, Akira	Kanagawa, JP	43	604
# of filed Patents : 43 Total Citations : 604

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Patent Citation Ranking

• 0 Citation Count
• H01J Class

• 0 % this patent is cited more than
• 12 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Feb 6, 2025

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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
August 06, 2013	US,8502451,B2   US8502451B2	GRANTED PATENT AS SECOND PUBLICATION
September 30, 2010	US,20100244690,A1   US20100244690A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8502451

Collector and electron tube

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Abstract

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A collector included in an electron tube is covered with a carbon nanotube layer over a required area on the surface thereof.

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Description

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Claims

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Claims data not available

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Legal Events

 

• MAFP2025
• MAFP2020
• FPAY2017
• AS2015
• I2013
• STCF2013
• P2010
• AS2010
• F2010
• AS2010
• PD2009

Date	Code	Event	Description
Jan 07, 2025	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 12
Sep 28, 2020	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8
Jan 26, 2017	FPAY	FEE PAYMENT	year of fee payment: 4
Apr 06, 2015	AS	ASSIGNMENT	free format text: CHANGE OF NAME;ASSIGNOR:NETCOMSEC CO. LTD.,;REEL/FRAME:035752/0148 Owner name: NEC NETWORK AND SENSOR SYSTEMS, LTD., JAPAN Effective Date: Apr 06, 2015
Aug 06, 2013	I	Issuance
Jul 17, 2013	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Sep 30, 2010	P	Published
Mar 31, 2010	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NEC MICROWAVE TUBE, LTD.;REEL/FRAME:024670/0694 Owner name: NETCOMSEC CO.LTD, JAPAN Effective Date: Mar 31, 2010
Mar 16, 2010	F	Filing
Mar 03, 2010	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHIBA, AKIRA;REEL/FRAME:024084/0502 Owner name: NEC MICROWAVE TUBE, LTD., JAPAN Effective Date: Mar 03, 2010
Mar 25, 2009	PD	Priority Date