Production of microbial cellulose
CA 1289494 C · Owner: Roberts, Eric M. · Inventors: Brown, R. Malcolm, Jr.; Hardison, Linda K.; Roberts, Eric M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention comprises a process for microbial cellulose production. Both a liquid culture comprising a cellulose-producing microorganism and a structure having a first side and a second side and comprising material permeable to gases are provided. The first side of the structure is contacted with an oxygencontaining gas. The second side of the structure is contacted with the liquid culture so that microbial cellulose is produced upon the second side. The supply of oxygen to cellulose-producing microorganisms through gas permeable material and the resultant deposition of cellulose upon said material permits the productions of shaped objects or a continuous cellulose production. The …
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 September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2008.
- 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.