Bituminous composition and use thereof as cold-applicable self-adhesive compound
CA 1281447 C · Owner: Van Gooswilligen, Gerrit · Inventors: Vonk, Willem Cornelis; Van Gooswilligen, Gerrit
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Bituminous composition comprising a) from 99 to 85%w of a mixture of, 1) 45 to 99.8%w of a bituminous component having a penetration of at least 800dmm at 25°C; 2) 0.1 to 30%w of a lithium salt of a C10-40 fatty acid or hydroxy fatty acid;, 3) 0.1 to 25%w of an elastomer; and b) from 1 to 15%w of an amorphous silica filler.
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
- Granted March 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 2008.
- 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.