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Business

Ajinomoto sues over tryptophan patents

by Marc S. Reisch
May 23, 2016 | A version of this story appeared in Volume 94, Issue 21
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The Japanese amino acid producer Ajinomoto has sued South Korean competitor CJ CheilJedang for infringing patents covering the manufacture of animal-feed-grade l-tryptophan. At issue is use of genetically enhanced Escherichia coli to improve the yield of the essential amino acid. In suits filed in U.S. federal court and Germany, Ajinomoto seeks unspecified monetary damages and a halt to CJ’s sale of the product. Ajinomoto recently said it would build a feed-grade tryptophan plant in Eddyville, Iowa, its first in the U.S.

Chemical & Engineering News
ISSN 0009-2347
Copyright © 2024 American Chemical Society

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