Process for forming a film
CA 1286927 C · Owner: Uekita, Masakazu · Inventors: Uekita, Masakazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for forming a built-up film with high polymers whose film inherently cannot be readily obtained by LB technique comprises modifying the high polymers and, if required, further by cyclizing the product partially or wholly, the produced thin films have extremely excellent heat resistance, good chemical resistance and mechanical characteristics and whose thickness is so small that it is generally hardly attainable, that is, less than 10,000 .ANG. or if desired super-thin films of 10 to 1000 .ANG..
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 July 30, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 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.