Microbial cellulose modified during synthesis
CA 1339913 C · Owner: Brown, R. Malcolm Jr. · Inventors: Brown, R. Malcolm Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses a method for producing modified cellulose. The method comprises inoculating a quantity of nutrient medium comprising a polysaccharide derivative with a cellulose-producing microorganism. The inoculated medium is then aerobically incubated to facilitate the production of cellulose. The step of substantially drying the cellulose may be added for certain products. The substantially dried cellulose which results from this procedure is highly absorbent tending to, retain its absorbent properties during repeated wetting and drying, and is usable where such absorbency is desired.
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 June 16, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 16, 2015.
- 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.