Crystalline anhydrous lactitol and a process for the preparation thereof as well as use thereof
CA 2106759 C · Owner: Heikkila, Heikki · Inventors: Nurmi, Juha; Pepper, Tammy; Heikkila, Heikki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a novel crystalline anhydrous lactitol a process for , the preparation thereof and the use thereof. The novel crystalline anhydrous lactitol belongs to the monoclinic crystal system and has the unit cell constants; (a) = 7.614 .ANG.; (b) = 10.757 .ANG.; (c) = 9.370 .ANG. and .beta. = 108.2°. Its melting point is between 149 °C and 152 °C, water content below 0.5 % and, lactitol content more than 99.%; it has a low hygroscopicity.
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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
- Filed March 19, 1992 and granted July 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 2014.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.