Crystallization of beta hmx from nitric acid
CA 1300134 C · Owner: Morton Thiokol, Inc. · Inventors: Levinthal, Michael L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method of directly precipitating substantially pure beta HMX from a substantially anhydrous nitric acid solution without forming and recrystallizing polymorphic HMX. HMX dissolved in a solvent consisting essentially of anhydrous nitric acid is added to water which is seeded with crystals of beta HMX to substantially completely precipitate all the HMX from solution as beta HMX without forming crystals of the other polymorphic forms of HMX. A preferred reaction and apparatus for preparing HMX in anhydrous nitric acid is also 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 5, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 5, 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.