Use of phenethanol amines to improve fat content of sow's milk
CA 1298785 C · Owner: Anderson, David Bennett · Inventors: Veenhuizen, Edward Lee; Anderson, David Bennett
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
X-5259A, Abstract, The fat content of sows' milk is increased thereby increasing the energy supplied to the sow's piglets, by administering a phenethanolamine of formula (I):, (I), wherein:, R is hydrogen, hydroxy methoxy or amino;, R1 is hydrogen or cyano; R2 is C2-C4 alkyl ox a group of formula (II) (II);, wherein:, R3 is hydrogen or methyl; R4 is hydrogen, hydroxy, fluoro, nitro or carbamoyl;, provided that:, R and R4 are not both hydrogen; R4 is not hydroxy when R is hydrogen;, R is hydrogen or amino when R1 is cyano; R is hydrogen, hydroxy or methoxy when R1 is hydrogen;, R2 is C2-C4 alkyl when and only when R1 is cyano; or a physiologically acceptable acid addition salt thereof.
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 April 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 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.