Protective goods
CA 2238431 A1 · Owner: Wakuta, Yoshio · Inventors: Fujita, Masakazu; Kumakawa, Shiro; Wakuta, Yoshio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides protective goods for example arctic clothing , which allows long-time working even under the low temperature environment; said protective goods being characterized by excellent workability heat-, insulation and anti-static feature without being hardened and embrittled, especially at the temperature of -10 degrees Celsius or below further, under , the environment of very low temperature such levels as -30 degrees Celsius or - 60 degrees Celsius, furthermore even under the environment of extremely-low temperature on the level of -100 to -250 degrees Celsius. Protective goods made from a multiple-layer composite cloth characterized in that said , composite …
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 October 3, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 3, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 3, 2019.
- 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.