NINGXIA ORIENT TANTALUM INDUSTRY CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B22F WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER 1141
 
  
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 858
 
  
 
C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS 532
 
  
 
C22C ALLOYS 369
 
  
 
C23C COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 299
 
  
 
B21B ROLLING OF METAL 131
 
  
 
C01G COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 138
 
  
 
C21D MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS 144
 
  
 
C22B PRODUCTION OR REFINING OF METALS 127
 
  
 
C23G CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS 112

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0232,509 COMPOSITE TANTALUM POWDER AND PROCESS FOR PREPARING THE SAME AND CAPACITOR ANODE PREPARED FROM THE TANTALUM POWDERAug 20, 14Aug 17, 17[B22F, C22F, H01G]
2017/0072,462 Process For Preparing Tantalum Powders For Use In An Electrolytic Capacitor With High Reliability and High Specific CapacitanceFeb 15, 15Mar 16, 17[B22F, C22F, H01G]
2016/0354,838 HIGH-PURITY TANTALUM POWDER AND PREPARATION METHOD THEREOFFeb 27, 14Dec 08, 16[B22F, C23G, C22F]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9764388 Method for preparing tantalum powder of capacitor grade with high nitrogen content, tantalum powder of capacitor grade prepared thereby, and anode and capacitor prepared from tantalum powderDec 10, 13Sep 19, 17[C22B, B22F, H01G, C22C]
9309584 Base material for high temperature alloy and manufacture method thereofJan 16, 14Apr 12, 16[B22D, C22C]
9199307 Method for preparing a tantalum powderAug 02, 12Dec 01, 15[B22F, H01G]
8673052 Process for preparing tantalum powder for capacitorsJun 18, 10Mar 18, 14[B22F]
8238078 Valve metal particles uniformly containing nitrogen and the method for preparing the same, the valve metal green pellets and sintered pellets, and the electrolytic capacitor anodesOct 14, 08Aug 07, 12[C23C, H01G]
7727508 Process for preparing powder of niobium suboxides or niobiumAug 22, 08Jun 01, 10[C01G]
7666247 Methods for spherically granulating and agglomerating metal particles, and the metal particles prepared thereby, anodes made from the metal patriclesFeb 17, 06Feb 23, 10[B22F]
6786951 Process for the production of high surface area tantalum and/or niobium powdersSep 30, 02Sep 07, 04[B22F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0076,462 METHOD FOR PASSIVATING TANTALUM METAL SURFACE AND APPARATUS THEREOFAbandonedMar 23, 11Mar 20, 14[C23C]
2012/0300,362 Tantalum Wire Used for Anode Lead of Tantalum Capacitor and Manufacturing Method ThereofAbandonedMay 21, 09Nov 29, 12[H01R, H01G]
2010/0226,070 TANTALUM POWDER, METHOD FOR PREPARING THE SAME, AND ELECTROLYTIC CAPACITOR ANODE MADE OF THE TANTALUM POWDERAbandonedMar 05, 10Sep 09, 10[B22F, H01G, C22C]

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