Melanin production by transformed organisms
CA 2086417 C · Owner: Della-Ciopa, Guy · Inventors: Turpen, Thomas H.; Garger, Stephen J. Jr.; Grill, Laurence K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a process for producing melanins, their precursors and their analogs hereinafter referred to generically as melanins. According to the invention, melanins are produced in amounts greater than about 0.2 grams dry weight per liter of growth medium. The enhanced production of melanin can be achieved by manipulating the constituents of the growth medium and/or, attenuating fermentation conditions and/or by genetically, engineering microorganism to produce melanins and/or mutating, the microorganisms.
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
- Filed June 28, 1991 and granted July 6, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2013.
- 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.