Nontwisted heather yarn and method for producing same
CA 1104802 B · Owner: Phillips Petroleum Company · Inventors: Newton, Richard C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A non-twisted heather yarn is formed of a plurality of major yarn bundles at least one of which is of a substantially different color from the remaining bundles. Each major yarn bundle is formed of a multiplicity of continuous filaments and has from about 10 to about 90 percent of its filaments cohering to form secondary bundles with the remaining filaments of each major bundle varying in number along the length of the yarn being interlaced with, other major bundles of the yarn and being randomly located about the yarn axis. Each of the secondary bundles in each unit length of the yarn of about inches has a portion thereof formed of greater than about 30 percent …
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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 April 13, 1976. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 13, 1993.
- 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.