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:
Feb. 22, 1983
Filed:
Mar. 02, 1981
Applicant:
Inventor:
Pietro Molla, Milan, IT;
Assignee:
Saffa S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
203 91 ; 423303 ;
Abstract
Process for the purification of phosphorus pentasulphide by means of distillation under vacuum at a residual pressure of about 6 mmHg and carried out according to a 'thermal profile' comprising, immediately before and immediately after the liquid-vapor-liquid double passage of state, two stationary stages wherein said pentasulphide is maintained in the liquid state at a temperature very close to the boiling temperature of the pentasulphide itself.
Molla, Pietro. (1983). Process for the purification of phosphorus pentasulphide by distillation (U.S. Patent No. 4374706). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4374706
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile