General packing of expanded graphite and process for production thereof
CA 1338151 C · Owner: Xiang, Zhu Di · Inventors: Xiang, Zhu Di
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a general packing of expanded graphite and the process for production thereof. The packing mainly includes vermiform laminae of expanded graphite and auxiliary materials, which is characterized by the embedment of the auxiliary materials into the vermiform graphite laminae the, bonding of the auxiliary materials to the vermiform graphite laminae with organic adhesives. The process for producing of the packing comprises the treatment of graphite with strong acid to produce interlaminar compound followed by transient expansion of treated graphite to become vermiform and the combination of vermiform graphite laminae with the auxiliary materials to produce packing. …
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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
- Granted March 12, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 2013.
- 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.