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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6528668 B1

PDFFull Text
Date of Patent:
Mar. 04, 2003

Filed:

Jan. 14, 2002

Methods for making 2-(&ohgr;-alkoxycarbonylalkanoyl)-4-butanolide, ester of &ohgr;-hydroxy-(&ohgr;-3)-ketoaliphatic acid, and derivatives thereof

Applicant:
Inventors:

Hideaki Takaoka, Chiba, JP;

Sigeru Wada, Chiba, JP;

Nobuhiko Ito, Chiba, JP;

Akio Hasebe, Chiba, JP;

Shinzo Imamura, Aichi, JP;

Hideo Muraoka, Aichi, JP;

Assignee:

Toray Industries, Inc., , JP;

Attorney:

Schnader Harrison Segal & Lewis LLP

Primary Examiner:

Paul J Killos

Int. Cl.
CPC ...
C07C 5/100 ;
U.S. Cl.
CPC ...
C07C 5/100 ;
Abstract

Methods for making 2-(&ohgr;-alkoxycarbonylalkanoyl)-4-butanolide and derivatives thereof, esters of &ohgr;-hydroxy-(&ohgr;-3)-ketoaliphatic acid and derivatives thereof, which are useful as a variety of synthetic raw materials and intermediates, and are prepared as intermediates in the production step of &ohgr;-hydroxyaliphatic acid being important intermediates of large cyclic lactone-based perfumes in the perfume industry.

Find Patent Forward Citations

Takaoka, Hideaki. (2003). Methods for making 2-(&ohgr;-alkoxycarbonylalkanoyl)-4-butanolide, ester of &ohgr;-hydroxy-(&ohgr;-3)-ketoaliphatic acid, and derivatives thereof (U.S. Patent No. 6528668). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6528668

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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