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Serving leading biopharmaceutical companies globally:

Express Scripts
Queensland Health
Chinese Patent Office

Generated: November 19, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,017,615

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Summary for Patent: 4,017,615

Title: Propylene carbonate ointment vehicle
Abstract:An ointment vehicle containing from 0.5 to 30 percent propylene carbonate, from 30 to 99.5 weight percent petrolatum and/or polysiloxane, compatible cosolvent, the concentration of which in combination with propylene carbonate is from 0.5 to 70 percent, and, optionally, surfactants, thickeners, preservatives, and penetrants. This ointment is a suitable vehicle for all types of therapeutic agents for topical application including antibiotics, steroids, antihistamines, antiseptics, anesthetics, antibacterials, fungicides and the like, and has shown particular advantages with anti-inflammatory topical corticoids.
Inventor(s): Shastri; Subramaniam (Cupertino, CA), Shaikh; Zafaruzzaman I. (Palo Alto, CA)
Assignee: Syntex Corporation (Panama, PM)
Application Number:05/639,740
Patent Claim Types:
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International Patent Family for Patent: 4,017,615

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria310948► Subscribe
Australia3322871► Subscribe
Belgium774489► Subscribe
Canada989306► Subscribe
Switzerland566783► Subscribe
Germany2153779► Subscribe
Denmark129766► Subscribe
Spain396479► Subscribe
Spain423345► Subscribe
Finland52811► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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Serving leading biopharmaceutical companies globally:

US Department of Justice
Express Scripts
Farmers Insurance
Queensland Health

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