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:
Mar. 12, 2013
Filed:
Mar. 12, 2012
Applicants:
Zhongyi Ding, Katy, TX (US);
Joseph Chiu, Katy, TX (US);
Weihua Jin, Katy, TX (US);
Inventors:
Assignee:
GTC Technology US LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 29/132 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process to convert glycerin into propylene glycol and purifying the produced propylene glycol is described. The glycerin-based propylene glycol production requires only one process step compared to petroleum/natural gas-based propylene glycol production requires multiple process steps, and thus represents a cost savings.