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:
Apr. 20, 2021
Filed:
Aug. 24, 2020
Applicants:
Symrise Ag, Holzminden, DE;
Sino-high (China) Co. Ltd., Nanjing, CN;
Inventors:
Ravikumar Pillai, Mahwah, NJ (US);
Sven Siegel, Höxter, DE;
Ev Suess, Bevern, DE;
Karolin Bolte, Boffzen, DE;
Yan Liuxin, Nanjing, CN;
Assignees:
SYMRISE AG, Holzminden, DE;
SINO-HIGH (CHINA) CO. LTD., Nanjing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 45/79 (2006.01); C07C 45/81 (2006.01); C07C 49/825 (2006.01);
U.S. Cl.
CPC ...
C07C 45/81 (2013.01); C07C 45/79 (2013.01); C07C 49/825 (2013.01);
Abstract
Methods of purifying crude 4-hydroxyacetophenone using one or more solvents as well as products comprising or consisting of crystallized 4-hydroxyacetophenone and one, two or more solvent(s). The products may be obtained or obtainable from the methods for purifying crude 4-hydroxyacetophenone.