Pharmaceutical compositions useful as bronchodilators
CA 1092028 A · Owner: Pfizer Inc. · Inventors: Pitts, Norman E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pharmaceutical composition in effective dosage unit form for enhancing pulmonary function in mammals comprising either (a) pirbuterol and hydroxyzine or (b) a pharmaceuticallyacceptable acid addition salt of each of pirbuterol and hydroxyzine, the said composition comprising pirbuterol and hydroxyzine in the weight ratio, calculated as the free base of each of, from 1:0.3 to 1:5; and the use of such composition for enhancing pulmonary function in a mammalian subject.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted December 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.