Method of producing shaped cellulosic articles
CA 2059043 A1 · Owner: Jurkovic, Raimund · Inventors: Eichinger, Dieter; Jurkovic, Raimund; Zikeli, Stefan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cellulosic solution in a amine oxide and water is forced through an elongated orifice passage having a minimum length of 1000 µm and a minimum diameter along the length which is up to 150 µm 50 that fiber characteristics are imparted to the emerging strand which passes through an air gap of at the most 35 mm in length into the coagulating solution. - 19 -
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 January 8, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 2014.
- 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.