POWDERTECH CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G03G ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY 5040
 
  
 
C01G COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 633
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 678
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 3106
 
  
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 3153
 
  
 
C08K USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS 2100
 
  
 
C09D COATING COMPOSITIONS, e.g. PAINTS, VARNISHES, LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR 290
 
  
 
B01D SEPARATION 1133
 
  
 
B22F WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER 151
 
  
 
C09C TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES 129

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2018/0009,677 HEXAGONAL PLATE SHAPED FERRITE POWDER, MANUFACTURING METHOD THEREOF, AND RESIN COMPOUND AND MOLDED PRODUCT USING THE FERRITE POWDERJan 21, 16Jan 11, 18[C01G, H01F, H05K]
2017/0369,672 MAGNETIC FILLERJan 26, 16Dec 28, 17[C01G, H01F, C08K]
2017/0349,449 PLATE SHAPED FERRITE PARTICLES HAVING METALLIC LUSTER FOR PIGMENTJan 21, 16Dec 07, 17[C09D, C09C, C01G, H01F, H05K]
2016/0044,838 COMPOSITE MAGNETIC POWDER FOR NOISE SUPPRESSIONMar 18, 14Feb 11, 16[B22F, H01F, H05K]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9588453 Resin-filled ferrite carrier for electrophotographic developer and electrophotographic developer using the ferrite carrierMar 30, 15Mar 07, 17[G03G]
9557682 Resin-coated carrier for electrophotographic developer and electrophotographic developer using the resin-coated carrierMar 30, 12Jan 31, 17[G03G]
9372426 Ferrite particle having outer shell structure, ferrite carrier core material for electrophotographic developer, and electrophotographic developerJan 16, 15Jun 21, 16[G03G]
9329515 Resin-coated carrier for electrophotographic developer and electrophotographic developer using the resin-coated carrierMar 27, 14May 03, 16[G03G]
9201328 Core material for resin-filled ferrite carrier and ferrite carrier for electrophotographic developer, and electrophotographic developer using the ferrite carrierMar 19, 14Dec 01, 15[G03G]
9201329 Porous ferrite core material for electrophotographic developer, resin-coated ferrite carrier and electrophotographic developer using the ferrite carrierJan 10, 13Dec 01, 15[G03G]
9081318 Ferrite carrier core material and ferrite carrier for electrophotographic developer, methods for manufacturing these, and electrographic developer using the ferrite carrierAug 29, 11Jul 14, 15[G03G]
8895218 Carrier core material and carrier for electrophotographic developer and process for producing the same, and electrophotographic developer using the carrierJan 12, 10Nov 25, 14[G03G]
8728699 Porous ferrite core material for electrophotographic developer, resin-filled ferrite carrier and electrophotographic developer using the ferrite carrierOct 19, 10May 20, 14[G03G]
8628905 Ferrite core material for resin-filled type carrier, resin-filled type carrier, and electrophotographic developer using the carrierMay 31, 06Jan 14, 14[G03G]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0277,256 FERRITE CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, FERRITE CARRIER AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE FERRITE CARRIERAbandonedMar 27, 15Oct 01, 15[G03G, C01G, H01F]
2012/0076,551 RESIN-COATED CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND PROCESS FOR PRODUCING THE SAME, AND ELECTROPHOTOGRAPHIC DEVELOPER COMPRISING THE RESIN-COATED CARRIERAbandonedDec 07, 11Mar 29, 12[G03G]
8092971 Resin-coated carrier for electrophotographic developer and process for producing the same, and electrophotographic developer comprising the resin-coated carrierExpiredNov 25, 04Jan 10, 12[G03G]
2011/0244,388 RESIN-COATED CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE RESIN-COATED CARRIERAbandonedMar 25, 11Oct 06, 11[G03G]
2011/0244,389 FERRITE CARRIER CORE MATERIAL FOR ELECTROPHOTOGRAPHIC DEVELOPER, FERRITE CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND METHODS FOR PRODUCING THE FERRITE CARRIER CORE MATERIAL AND THE FERRITE CARRIER, AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE FERRITE CARRIERAbandonedMar 25, 11Oct 06, 11[G03G]
8026033 Ferrite carrier for electrophotographic developer and electrophotographic developerExpiredJan 16, 08Sep 27, 11[G03G]
2011/0183,253 CORE MATERIAL OF FERRITE CARRIER AND FERRITE CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE FERRITE CARRIERAbandonedDec 08, 10Jul 28, 11[G03G]
7914715 Granulating method, granulated particle(s) and granulating deviceExpiredJan 17, 07Mar 29, 11[B29B]
7880483 Method for inspecting quality of core material for electrophotographic ferrite carrierExpiredMar 28, 08Feb 01, 11[G01R]
2011/0013,948 CORE MATERIAL OF CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND METHOD FOR MANUFACTURING THE CORE MATERIAL, CARRIER AND METHOD FOR MANUFACTURING THE CARRIER, AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE CARRIERAbandonedFeb 27, 09Jan 20, 11[G03G]
2010/0248,113 CARRIER COATED WITH RESIN FOR ELECTROPHOTOGRAPHIC DEVELOPER AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE CARRIER COATED WITH RESINAbandonedMar 11, 10Sep 30, 10[G03G]
2010/0248,125 RESIN-FILLED FERRITE CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE FERRITE CARRIERAbandonedMar 19, 10Sep 30, 10[G03G]
2010/0233,612 CARRIER FOR TWO-COMPONENT ELECTROPHOTOGRAPHIC DEVELOPER AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE CARRIERAbandonedMar 03, 10Sep 16, 10[G03G]
2010/0111,816 INORGANIC PARTICLE-CONTAINING EMULSION AND MANUFACTURING METHOD OF A PARTICLE BY USING THE INORGANIC PARTICLE-CONTAINING EMULSIONAbandonedFeb 21, 08May 06, 10[C01B]
2010/0055,601 RESIN-FILLED CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE RESIN-FILLED CARRIERAbandonedAug 18, 09Mar 04, 10[G03G]
2009/0297,974 CARRIER FOR AN ELECTROPHOTOGRAPHIC DEVELOPER, AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE CARRIERAbandonedMar 25, 09Dec 03, 09[G03G]
2009/0246,526 FERRITE PARTICLES AND PRODUCTION METHOD THEREOFAbandonedMar 25, 09Oct 01, 09[C04B, B32B]
2009/0246,670 CARRIER PARTICLES FOR FORMING WIRING CIRCUIT PATTERN AND DEVELOPERAbandonedMar 06, 09Oct 01, 09[G03G]
2009/0239,173 RESIN-FILLED CARRIER FOR ELECTROPHOTOGRAPHIC DEVELOPER, AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE RESIN-FILLED CARRIERAbandonedMar 05, 09Sep 24, 09[G03G]
2009/0170,022 ELECTROPHOTOGRAPHIC DEVELOPER CARRIER AND ELECTROPHOTOGRAPHIC DEVELOPER USING THE SAME CARRIERAbandonedDec 23, 08Jul 02, 09[G03G]

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