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. 27, 1977
Filed:
Dec. 03, 1976
Roger Hulme, Somerville, NJ (US);
Exxon Research and Engineering Company, Linden, NJ (US);
Abstract
Tantalum and/or niobium pentafluorides may be recovered from a deactivated or partially deactivated hydrocarbon conversion catalyst comprising (a) a metal pentafluoride selected from the group consisting of tantalum pentafluoride, niobium pentafluoride and mixtures thereof and (b) hydrogen fluoride, by distilling said catalyst in the presence of a Lewis acid containing neither of these Group V metals, thereby displacing a pentahalide of tantalum and/or niobium into the vapor phase from which it can be condensed. Addition of hydrogen fluoride then converts the pentahalide to the pentafluoride.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile