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

Patent Owner(s)

Patent Owner	Address
STELCO INC	HAMILTON ONTARIO L8N ET1

International Classification(s)

• C21C:PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE....

• 1989 Application Filing Year
• C21C Class
• 60 Applications Filed
• 0 Patents Issued To-Date
• 0 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Mitchell, John S	Burlington, CA	5	39
# of filed Patents : 5 Total Citations : 39

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Patent Citation Ranking

• 1 Citation Count
• C21C Class

• 0 % this patent is cited more than
• 34 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: 4982936

Continuous annealing lines

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Abstract

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An improvement to continuous annealing furnaces allows three stacks of coils to be loaded on two trays, with one of the stacks straddling the trays. The modifications include an upender device adapted to place the stacks of coils appropriately on two side-by-side trays, a tray pusher device which ensures that the trays will remain in side-by-side alignment throughout their traverse of the furnace, and a downender device adapted to receive the three stacks of coils from the furnace after annealing, and rotate them to an axis-horizontal position from which they can be removed by a boom truck.

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Description

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Claims

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Legal Events

 

• STCH2003
• FP2003
• LAPS2003
• REMI2002
• FPAY1998
• FPAY1994
• FEPP1993
• I1991
• F1989
• PD1989
• AS1989

Date	Code	Event	Description
Feb 05, 2003	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Jan 08, 2003	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Jan 08, 2003
Jan 08, 2003	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Jul 23, 2002	REMI	MAINTENANCE FEE REMINDER MAILED
Jun 11, 1998	FPAY	FEE PAYMENT	year of fee payment: 8
May 02, 1994	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 05, 1993	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Jan 08, 1991	I	Issuance
Dec 13, 1989	F	Filing
Dec 13, 1989	PD	Priority Date
Oct 26, 1989	AS	ASSIGNMENT	free format text: DECREE OF DISTRIBUTION;ASSIGNOR:MITCHELL, JOHN S.;REEL/FRAME:005193/0562 Owner name: STELCO INC.,, CANADA Effective Date: Oct 26, 1989