Polyolefin fiber
CA 2089401 A1 · Owner: Hercules Incorporated · Inventors: Harrington, James H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Harrington Case No. 4, POLYOLEFIN FIBER A fiber comprising a polyol-fin fiber having a finish which comprises an antistatic composition wherein the fiber with the finish has a hydrostatic head value at least about 102 mm and is capable of being processed into a nonwoven fabric on processing equipment comprising at least on card and means for bonding the fabric at a throughput of at least about 128 pounds/hours for a period of at least two hours without formation of significant solid antistatic composition build-up on the nonwoven fabric processing equipment and related compositions and processes and articles made with such fibers
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 February 12, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 12, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 2015.
- 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.