Process to produce a stable coal tar-containing shampoo
CA 1265059 C · Owner: Jungermann, Eric · Inventors: Jungermann, Eric; Noudarikian, Vartan; Fong, John R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel process for producing a new and improved coal tar shampoo which permits consistent replication at a preselected pH and is capable of retaining its clarity color and preselected viscosity for an extended time period. The process is predicated upon a fatty acid diethanolamide to cocamidopropyl betaine (Fatty Acid DEA:CAPB) ratio of the range of 1.3-2.6:1 deliberate, preblending of Fatty Acid DEA with preservative and fragrance without heat before introduction into the master batch, and early cycle neutralization to a pH of circa 7.6.
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 January 30, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 2007.
- 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.