Vermin-repellent microcapsules with slow-release potentiality
CA 1308019 C · Owner: Showa Denko Kabushiki Kaisha · Inventors: Ohki, Michihiro; Utaka, Keiichi; Ono, Kumiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are slow-release vermin-repellent microcapsules composed of a core substance and a wall film formed around the said core substance to encapsulate the same in which the, core substance is diethyltoluamide of a formula: and the wall film has a function of slow-releasability.
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 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 2009.
- 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.