Materials for electromagnetic radiation attenuation
CA 2123598 A1 · Owner: Dispenza, Beth A. · Inventors: Dispenza, Beth A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coating (14) comprising an inert base material (15) having dispersed therein particles of metals (16) capable of reflecting or absorbing electromagnetic radiation. The coating process may be applied to lightweight gray goods (12) which may be used to fabricate articles of clothing or personnel protective equipment capable of attenuating electromagnetic radiation thus reducing the, radiation exposure of the wearer. In one embodiment the particles, are comprised of fine copper dust ranging in size from 5 to 50 microns, preferably applied within the base as the rate of 200,000 to 350,000 particles per square centimeter and more preferably at , the rate of 250,000 articles per square …
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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 November 13, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2014.
- 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.