Adjuvants for rectal delivery of drug substances
CA 1165688 A · Owner: Merck & Co. Inc. · Inventors: Nishihata, Toshiaki; Higuchi, Takeru; Rytting, J. Howard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and drug form for enhancing the rate of absorption of a rectally administered drug from the rectal compartment into the blood stream of a warm blooded animal. The method includes the steps of preparing a drug form capable of being rectally administered. The drug form comprises a therapeutically effective unit dosage amount of a selected drug of the type which is capable of being absorbed into the blood stream from the rectal compartment and hydroxy aryl or hydroxy aralkyl acids or salts, amides or esters thereof the, hydroxy aryl or hydroxy aralkyl acids or salts amides, or esters thereof being present in the drug form in a sufficient amount to be effective in enhancing the drug …
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 April 17, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 17, 2001.
- 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.