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

Patent Owner(s)

Patent Owner	Address
HITACHI LTD	TOKYO TOKYO METROPOLIS

International Classification(s)

• C25F:PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIAL....

• 1994 Application Filing Year
• C25F Class
• 35 Applications Filed
• 16 Patents Issued To-Date
• 45.72 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Itoh, Masahiro	Hitachioota, JP	114	1428
# of filed Patents : 114 Total Citations : 1428
Kashimura, Eizi	Naka, JP	3	35
# of filed Patents : 3 Total Citations : 35
Mabuchi, Katsumi	Hitachi, JP	36	337
# of filed Patents : 36 Total Citations : 337
Nakamura, Tsuneo	Hitachi, JP	18	234
# of filed Patents : 18 Total Citations : 234

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Patent Citation Ranking

• 8 Citation Count
• C25F Class

• 13.04 % this patent is cited more than
• 30 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

Full Text

US Patent No: 5472579

Hot-rolled steel strip manufacturing and descaling method and apparatus

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Abstract

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This invention provides a method and an apparatus for removing scales from hot-rolled steel strips to produce steel strips with excellent surface conditions. In a pickling facility to pickle the hot-rolled steel strip, the pickling method of this invention passes an electric current through the continuously fed, hot-rolled steel strip in one or more of a plurality of pickling tanks. A means to supply an electric current is also provided.

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Description

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Claims

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Claims data not available

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Legal Events

 

• FPAY2007
• FPAY2003
• FEPP2002
• FPAY1999
• FEPP1998
• I1995
• STCF1995
• F1994
• AS1994
• PD1993

Date	Code	Event	Description
May 23, 2007	FPAY	FEE PAYMENT	year of fee payment: 12
May 29, 2003	FPAY	FEE PAYMENT	year of fee payment: 8
Dec 06, 2002	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 01, 1999	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 05, 1998	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Dec 05, 1995	I	Issuance
Oct 30, 1995	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Aug 11, 1994	F	Filing
Jul 08, 1994	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MABUCHI, KATSUMI;ITOH, MASAHIKO;KASHIMURA, EIZI;AND OTHERS;REEL/FRAME:007116/0491 Owner name: HITACHI, LTD., JAPAN Effective Date: Jul 08, 1994
Sep 17, 1993	PD	Priority Date