DrugPatentWatch Database Preview

Details for Patent: 6,335,447

Email this page to a colleague

« Back to Dashboard

Which drugs does patent 6,335,447 protect, and when does it expire?

Patent 6,335,447 protects XEPI and is included in one NDA.

This patent has thirteen patent family members in twelve countries.

Summary for Patent: 6,335,447

Title:	Quinolonecarboxylic acid derivatives or salts thereof
Abstract:	Novel quinolonecarboxylic acid derivatives of general formula (1) or salts thereof which have potent antibacterial effects on gram-positive bacteria in particular Propionibacterium acnes ##STR1## (wherein R.sup.1 represents a hydrogen atom or a carboxyl-protective group; R.sup.2 represents an optionally substituted cycloalkyl group; R.sup.3 represents a hydrogen atom, a halogen atom, an optionally substituted alkyl, alkoxy or alkylthio group, an optionally protected hydroxyl or amino group, or a nitro group; R.sup.4 represents an optionally substituted alkyl or alkoxy group; and Z represents a pyridin-4-yl or pyridin-3-yl group which is optionally substituted with at least one group selected from a halogen atom, an optionally substituted alkyl, alkenyl, cycloalkyl, alkoxy, alkylthio or amino group and an optionally protected hydroxyl or amino group).
Inventor(s):	Hayashi; Kazuya (Toyama, JP), Kito; Tokunori (Toyama, JP), Mitsuyama; Junichi (Toyama, JP), Yamakawa; Tetsumi (Toyama, JP), Kuroda; Hiroshi (Ishikawa, JP), Kawafuchi; Hiroyo (Toyama, JP)
Assignee:	Toyama Chemical Co., Ltd. (Tokyo, JP)
Application Number:	09/647,763
Patent Claim Types: see list of patent claims	Compound;

Drugs Protected by US Patent 6,335,447

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate
Ferrer Internacional	XEPI	ozenoxacin	CREAM;TOPICAL	208945-001	Dec 11, 2017		RX	Yes	Yes				Y

Foreign Priority and PCT Information for Patent: 6,335,447

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
Japan	10-110146	Apr 6, 1998
Japan	10-340217	Nov 30, 1998

PCT Information
PCT Filed	April 06, 1999	PCT Application Number:	PCT/JP99/01799
PCT Publication Date:	October 14, 1999	PCT Publication Number:	WO99/51588

International Family Members for US Patent 6,335,447

Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	342897
Brazil	9909456
Canada	2327328
China	1152029