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:
Jan. 08, 1991
Filed:
Nov. 23, 1988
Applicant:
Inventors:
Howard P Withers, Jr, Fleetwood, PA (US);
Andrew J Woytek, Allentown, PA (US);
John T Lileck, Tamaqua, PA (US);
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01F / ; C01G / ; C01G / ;
U.S. Cl.
CPC ...
423489 ;
Abstract
High purity metal fluorides (ZrF.sub.4, HfF.sub.4, AlF.sub.3) are produced by incomplete reaction of metal or their compounds with elemental fluorine and subsequent elevated temperature sublimation of the metal fluoride from the reaction products wherein unreacted metal or metal compounds act as 'getters' to convert volatile impurity metal fluorides to non-volatile metals or metal compounds.
Withers, Jr, Howard. (1991). Process for the production of high purity zirconium tetrafluoride and (U.S. Patent No. 4983373). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4983373
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile