2 - furylbutyrolactones
CA 1323374 C · Owner: Fodor, Gabor B. · Inventors: Szent-Gyorgyi, Albert; Veltri, Robert W.; Fodor, Gabor B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel 2-furylbutyrolactones are directly formed by reaction of 2,5-dialkoxy-2,5-dihydrofurans and 2,3dihydroxybutenolides in aqueous media and recovering crystalline product from an anhydrous medium. These novel compounds and compositions containing same may be used in the treatment of cancer in mammals, and as immunostimulants or immunosuppressants in humans and animals.
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 October 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 19, 2010.
- 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.