Writing utensil with mechanism to eliminate static electricity
CA 1310355 C · Owner: Yoshida, Hidemi · Inventors: Yoshida, Hidemi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a writing utensil equipped with the means to eliminate static electricity comprising a neon bulb, a resistor, the electrically conductive segments, etc. By the use of such writing utensil it is possible to eliminate the static electricity and protect human body from electric shock in easy and safe manner and to visually confirm the process of such elimination through the luminance of the neon bulb.
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 November 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 17, 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.