Ink, ink-jet recording process making use of the ink, and equipment therefor
CA 2095580 C · Owner: Noguchi, Hiromichi · Inventors: Shimomura, Masako; Noguchi, Hiromichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided is an ink containing a recording agent and a liquid medium capable of dissolving or dispersing the recording agent, wherein said ink comprises a compound represented by the formula R1R2NCONHCH2CH2OH, wherein R1 and R2 each represent hydrogen or CnH2nOH where n is 2 or 3, provided that R1 and R2 are not hydrogen at the same time, and has a pH of not less than 7 to less than 10.
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 May 5, 1993 and granted March 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 5, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 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.