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

Patent Owner(s)

Patent Owner	Address
AVENTIS PHARMA S A	20 AVENUE RAYMOND ARON ANTONY CEDEX 92165

International Classification(s)

• C07J:STEROIDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Brion, Francis	Gagny, FR	22	49
Buendia, Jean	Le Perreux sur Marne, FR	44	250
Diolez, Christian	Palaiseau, FR	22	25
Vivat, Michel	Lagny sur Marne, FR	36	77

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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: 5756722

Intermediates for the preparation of .DELTA..sup.4,9(11),17(20) -pregnatriene-3-ones

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