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

Patent Owner(s)

Patent Owner	Address
3M INNOVATIVE PROPERTIES COMPANY	P O BOX 33427 SAINT PAUL MN 55133-3427

International Classification(s)

• G08B:SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; A....

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• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Goff, Edward D	Oakdale, MN	12	1120
Gonzalez, Bernard A	St. Paul, MN	50	3168
Piotrowski, Chester	White Bear Lake, MN	30	2774
Tsai, Ching-Long	Woodbury, MN	26	1263

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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
July 29, 2003	US,6600420,B2   US6600420B2	GRANTED PATENT AS SECOND PUBLICATION
January 31, 2002	US,20020011967,A1   US20020011967A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 6600420

Application for a radio frequency identification system

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