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.:
Date of Patent:
Dec. 04, 2007
Filed:
Oct. 21, 2003
Applicants:
Athula Ekanayake, Cincinnati, OH (US);
Jianjun Justin LI, West Chester, OH (US);
Inventors:
Athula Ekanayake, Cincinnati, OH (US);
Jianjun Justin Li, West Chester, OH (US);
Assignee:
The Procter & Gamble Company, Cincinnati, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
A01N 65/00 (2006.01); C07D 473/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for enhancing theanine extraction from plant material through a series of extraction, adsorption and filtration steps. More specifically, disclosed is a process for isolating theanine from a plant material, which includes the steps of: a) contacting the plant material with a solvent to obtain an extract comprising theanine; b) contacting the theanine extract with an adsorbent to obtain a theanine-containing eluate; and c) subjecting the theanine eluate to a filtration step to obtain a theanine-rich extract.