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

Patent Owner(s)

Patent Owner	Address
DRAGER SAFETY AG & CO KGAA	REVALSTRASSE 1 LÜBECK 23560

International Classification(s)

• A62B:DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Balke, Olaf	Reinfeld, DE	10	70
Gdulla, Manfred	Lübeck, DE	7	107
Grassl, Thomas	Lübeck, DE	25	558
Müller, Rüdiger	Stockelsdorf, DE	6	34
Tolk, Siegbert	Lübeck, DE	5	14
Weich, Rüdiger	Rivnitz-Damgarten, DE	2	5

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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
August 18, 2009	US,7575004,B2   US7575004B2	GRANTED PATENT AS SECOND PUBLICATION
April 27, 2006	US,20060086360,A1   US20060086360A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7575004

Gas mask for normal pressure operation and overpressure operation

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