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:
Jun. 13, 1989
Filed:
Feb. 25, 1988
Applicant:
Inventors:
Bruce C Bunker, Albuquerque, NM (US);
Diana L Lamppa, Albuquerque, NM (US);
James A Voigt, Albuquerque, NM (US);
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01F / ; C01G / ; C04B / ; H01L / ;
U.S. Cl.
CPC ...
505-1 ; 252518 ; 252521 ; 423263 ; 423593 ; 501123 ; 501152 ; 505809 ; 505810 ; 505815 ;
Abstract
Method and apparatus for preparing highly pure homogeneous precursor powder mixtures for metal oxide superconductive ceramics. The mixes are prepared by instantaneous precipitation from stoichiometric solutions of metal salts such as nitrates at controlled pH's within the 9 to 12 range, by addition of solutions of non-complexing pyrolyzable cations, such as alkyammonium and carbonate ions.