Cable grease composition and articles incorporating same
CA 2181550 C · Owner: Chu, Jack Chieh · Inventors: Brauer, Melvin; Chu, Jack Chieh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A grease composition for use as a cable filling material which contains about 75 to 95 parts by weight of a base component of a liquid or semi-solid polyol having a molecular weight of at least 4000 and a reduced amount of mono-unsaturated compounds about 1, to 15 parts by weight of a thickening agent such as colloidal particles of silica and between 1 and 5 parts by weight of am antioxidant. Optionally a thermoplastic elastomer can be added to improve bleed resistance.
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 January 10, 1995 and granted November 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 10, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 2017.
- 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.