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

Patent Owner(s)

Patent Owner	Address
CYNARA COMPANY THE	400 WEST SAM HOUSTON PARKWAY SOUTH HOUSTON TX 77042

International Classification(s)

• B01D:SEPARATION

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Bales, Stephen E	Midland, MI	29	647
Beck, Henry Nelson	Walnut Creek, CA	1	23
Burmester, Alan F	Midland, MI	7	231
Clark, James E	Midland, MI	124	3665
Hotz, Charles Z	Walnut Creek, CA	11	568
Jeanes, Thomas O	Antioch, CA	17	353
Lacher, Ronald M	Midland, MI	3	139
McReynolds, Kent B	Midland, MI	17	429
Moll, David J	Midland, MI	15	293
Quarderer, George J	Midland, MI	9	245
Smith, Bethanne L	Freeland, MI	4	161
Wessling, Ritchie A	Berkeley, CA	79	3933
Young, Thomas C	Walnut Creek, CA	19	391

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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: 5679133

Gas separations utilizing glassy polymer membranes at sub-ambient temperatures

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