Packing material for chromatographic use and method for analysis of enantiomer mixture using the same
CA 1318308 C · Owner: Sumika Chemical Analysis Service, Limited · Inventors: Oi, Naobumi; Kitahara, Hajimu; Doi, Tadashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A packing material for chromatographic use wherein an organosilane of formula (I):, (I), wherein R1 R2 and R3, which may be the same or different each represents an alkyl, alkoxy or hydroxyl group or a halogen atom, provided that at least one of them represents an alkoxy group or a halogen atom; X represents an -NHCO- or -NH3+-OCO- group; n is an integer of 2 to 4; and *C represents an asymmetric carbon atom is grafted on an inorganic carrier having hydroxyl groups on the surface thereof as well as a method for the analysis of an enantiomer mixture using the same are disclosed.
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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 May 25, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 25, 2010.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.