Expired Canadian patentCanada
Thickening compositions containing xanthan gum, guar gum and starch
CA 1091083 A · Owner: Merck & Co. Inc. · Inventors: Racciato, Joseph S.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A blend of xanthan gum guar gum or guar gum, derivatives, and starch or starch derivatives has unique thickening properties. The blend is particularly useful in printing pastes, salad dressings and oil well drilling muds.
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 December 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 9, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 25, 1977
GrantedDecember 9, 1980
Term endedDecember 9, 1997
Patent numberCA 1091083 A
Classification (IPC)C08L3/00 +2 more
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.