QY

Q. C. Yang

PC Purzer Pharmaceutical Co.: 1 patents #5 of 23Top 25%
Overall (All Time): #3,857,886 of 4,157,543Top 95%
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Patent #TitleCo-InventorsDate
5142042 Process for preparing well crystallized alkali metal salts of 3, 7-substituted 7-aminocephalosporanic acid derivatives S. Kuen Chang 1992-08-25