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. 16, 2025
Filed:
Jun. 09, 2021
Applicant:
Flamma Spa, Chignolo d'Isola, IT;
Inventors:
Francesco Chiesa, Ceranova, IT;
Leila Vahdati, Isso, IT;
Mario Scotti, Abbiategrasso, IT;
Daniela Comi, Cisano Bergamasco, IT;
Paolo Cremonesi, Melzo, IT;
Maria Argese, Sedriano, IT;
Massimo Verzini, Caldiero, IT;
Wei He, Dalian, CN;
Assignee:
FLAMMA SPA, Chignolo d'Isola, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 269/08 (2006.01); C07C 271/12 (2006.01);
U.S. Cl.
CPC ...
C07C 269/08 (2013.01); C07C 271/12 (2013.01);
Abstract
The present invention relates to a process for the purification of (R)-2-amino-3-phenylpropyl carbamate in perspective of the subsequent conversion in the corresponding HCl salt (SOLRIAMFETOL). The invention further relates to the process for preparing a batch of purified solriamfetol, as well as to the purified (R)-2-amino-3-phenylpropyl carbamate or its hydrochloride salt.