Foam-inhibiting additives in low-foam cleaning compositions
CA 1304271 C · Owner: Piorr, Robert · Inventors: Schmid, Karl-Heinz; Geke, Juergen; Piorr, Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Short-chain polyethylene glycol ethers corresponding to the formula:, R1-O-(CH2CH2O)n - R2, wherein: R1 is a linear or branched C6-C18 alkyl or alkenyl radical, R2 is a C4-C8 alkyl radical, and n is an integer of from 2 to 6, are used as foam-inhibiting additives for low-foam cleaning compositions.
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 June 30, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 2009.
- 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.