Preparation of 3, 4-dehydro-beta-carotene

Invention Grant

US2849495A Preparation of 3, 4-dehydro-beta-carotene 失效

Title translation: 制备3,4-dehydro-β-胡萝卜素

Patent Title: Preparation of 3, 4-dehydro-beta-carotene
Patent Title (中): 制备3,4-dehydro-β-胡萝卜素
Application No.: US55321855

Application Date: 1955-12-15
Publication No.: US2849495A

Publication Date: 1958-08-26
Inventor: OTTO ISLER , HERBERT LINDLAR , MARC MONTAVON , RUDOLF RUEGG , PAUL ZELLER
Applicant: HOFFMANN LA ROCHE
Assignee: Hoffmann La Roche
Current Assignee: Hoffmann La Roche
Priority: CH2849495X 1954-12-24

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