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:
May. 03, 1977
Filed:
Nov. 03, 1975
Louis Gandon, Rambouillet, FR;
Gilbert Cheneau, Les Essarts le Roi, FR;
Le Nickel, Paris, FR;
Abstract
A process for the production of substantially pure hydrated nickel sulphate which involves reacting sulphuric acid with nickel chloride at the boiling point of the reaction mixture and partially removing formed hydrogen chloride gas. The reaction mixture is clarified to separate impurities, the formed nickel sulphate is crystallized from the clarified mixture, and the mother-liquor obtained at this stage recycled to an earlier stage of the process. The crystals of nickel sulphate are dried and the mother-liquid obtained at this stage, then recycled to an earlier stage of the process. The hydrated nickel sulphate obtained is substantially pure and essentially free of chloride ions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile