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

Patent Owner(s)

Patent Owner	Address
WESTLB AG	HERZOGSTRASSE 15 CREDIT RISK MANAGEMENT LOAN PROCESSING CENTER EUROPE AGENCY DESK DUSSELDORF 001-60534 DUSSELDORF 40217

International Classification(s)

• Non-US Classification not provided for expired patents

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Butscher, Alfons	Birkenau, DE	5	31
# of filed Patents : 5 Total Citations : 31
Heckel, Klaus	Gorxheimertal, DE	15	157
# of filed Patents : 15 Total Citations : 157
Spissinger, Peter	Mörlenbach, DE	2	21
# of filed Patents : 2 Total Citations : 21

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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
September 06, 2005	US,6939598,B2   US6939598B2	GRANTED PATENT AS SECOND PUBLICATION
March 28, 2002	US,20020037394,A1   US20020037394A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8953817

System and method for producing a directional output signal

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Abstract

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A system and method of producing a directional output signal is described including the steps of: detecting sounds at the left and rights sides of a person's head to produce left and right signals; determining the similarity of the signals; modifying the signals based on their similarity; and combining the modified left and right signals to produce an output signal.

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Description

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Claims

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• MAFP2022
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• I2015
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• P2011
• AS2011
• F2009
• PD2008

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Feb 10, 2015	I	Issuance
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Dec 01, 2011	P	Published
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Dec 01, 2009	F	Filing
Nov 05, 2008	PD	Priority Date