Family of xanthan-based polysaccharide polymers including non-acetylatedand/or non-pyruvylated gum and acetylated or non-acetylated polytetramergum
CA 1339113 C · Owner: Marrelli, John D. · Inventors: Vanderslice, Rebecca W.; Doherty, Daniel H.; Marrelli, John D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Variant xanthan gums are disclosed, including non-acetylated, non-pyruvylated, non-acetylated and non-pyruvylated, and fully-acetylated xanthan gums and other gums which are structurally-related to xanthan gum such as acetylated polytetramer and non-acetylated polytetramer. In addition, in vitro and in vivo methods for the synthesis of these gums are disclosed. Mutant X. campestris strains useful in these syntheses are also specified.
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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 July 29, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 2014.
- 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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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.