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Serving leading biopharmaceutical companies globally:

Federal Trade Commission
Argus Health
Queensland Health
Julphar
Mallinckrodt
Johnson and Johnson
Colorcon
Cerilliant
Teva
Farmers Insurance

Generated: January 21, 2018

DrugPatentWatch Database Preview

Details for Patent: 6,140,321

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Summary for Patent: 6,140,321
Title: Polymorphs of donepezil hydrochloride and process for production
Abstract:Donepezil hydrochloride, 1-benzyl-4-[(5,6-dimethoxy-1-indanon)-2-yl]methylpiperidine hydrochloride, is provided here in the form of four polymorphs which are stable against heat and humidity in the pharmaceutical use. They can be industrially produced. They are specified by peaks in X-ray powder diffraction pattern and absorption peaks in infrared absorption spectra in potassium bromide.
Inventor(s): Imai; Akio (Ibaraki, JP), Watanabe; Hideaki (Ibaraki, JP), Kajima; Takashi (Ibaraki, JP), Ishihama; Yasushi (Ibaraki, JP), Ohtsuka; Akiyo (Ibaraki, JP), Tanaka; Tomohide (Ibaraki, JP)
Assignee: Eisai Co., Ltd. (Tokyo, JP)
Application Number:08/774,802
Patent Claim Types:
see list of patent claims
Compound; Process; Use; Composition;

Drugs Protected by US Patent 6,140,321

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted
Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted

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Foreign Priority and PCT Information for Patent: 6,140,321

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan8-146293Jun 07, 1996

International Patents Family Members for US Patent 6,140,321

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Hong Kong 1080078 ➤ Subscribe
Hungary 0002270 ➤ Subscribe
Hungary 227539 ➤ Subscribe
Hungary 0900417 ➤ Subscribe
Japan H1053576 ➤ Subscribe
Japan 2005015486 ➤ Subscribe
Japan 2009040783 ➤ Subscribe
South Korea 20040104707 ➤ Subscribe
South Korea 100545851 ➤ Subscribe
South Korea 20000016417 ➤ Subscribe
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving leading biopharmaceutical companies globally:

Chubb
McKinsey
US Army
Covington
Medtronic
Daiichi Sankyo
Teva
McKesson
Queensland Health

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.

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