Method for preparing vitamin A

United States of America Patent

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May 7, 2002
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N/A
app pub date
Apr 20, 2001
filing date
Jul 10, 1998

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Expired

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Abstract

The invention relates to a process for making vitamin A from ethynyl-retro-.alpha.-ionol using an allene acetate as intermediate.

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Patent Owner(s)

Patent Owner	Address
AVENTIS ANIMAL NUTRITION S A	92164 ANTONY CEDEX

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C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Ancel, Jean-Erick	Saint Genis Laval, FR	18	36
Meilland, Pierre	Chaponost, FR	5	3

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Method for preparing vitamin A

Number of patents in Portfolio can not be more than 2000

United States of America Patent

09743289

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PATENT NO	6384270
SERIAL NO	09743289
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09743289

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