Yarn article comprising a tetrafluoroethylene polymer and a process for producing the same
CA 1305604 C · Owner: Katayama, Shigeki · Inventors: Katayama, Shigeki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A yarn article comprising a tetrafluoroethylene polymer is disclosed which has a specific bulk density a, specific orientation degree in an axial direction and a specific crystallinity and exhibits specific peaks in the thermogram of differential scanning calorimetry. The yarn article has excellent tensile strength at break and excellent tensile modulus of elasticity as well as inertness to chemicals. Therefore, the yarn article of the present invention can advantageously be used as a material for producing a woven fabric, a knit, a rope and the like particularly in the field where not only chemical resistance but also high tensile strength and high tensile modulus of elasticity are …
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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 July 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 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.