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:
Jul. 20, 2021
Filed:
Jul. 11, 2018
Laurus Labs Limited, Hyderabad, IN;
Ravindra Babu Bollu, Hyderabad, IN;
Venkata Pramod Kumar Mandadapu, Hyderabad, IN;
Venkata Sunil Kumar Indukuri, Hyderabad, IN;
Satyanarayana Chava, Hyderabad, IN;
Tirumala Rao Galla, Hyderabad, IN;
Jagadeeswara Rao Dadi, Hyderabad, IN;
Uma Maheswer Rao Vasireddi, Hyderabad, IN;
Laurus Labs Limited, Hyderabad, IN;
Abstract
The present invention relates to an improved process for the preparation of pure pirfenidone having a particular particle size distribution, a crystalline form of pirfenidone, and pharmaceutical compositions thereof, as well as methods for particle size reduction of pirfenidone, and methods for particle size reduction of pirfenidone by wet milling techniques using colloid mill, ultrasonicator, or high speed homogenizer devices.