NAMIKI PRECISION JEWEL CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 3202
 
  
 
A61B DIAGNOSIS; SURGERY; IDENTIFICATION 1239
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 155
 
  
 
B22F WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER 151
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156
 
  
 
C22C ALLOYS 171
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 183
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 193
 
  
 
H01S DEVICES USING STIMULATED EMISSION191
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 1106

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7790300 R-Fe-B based thin film magnet and method for preparation thereofMar 23, 05Sep 07, 10[B32B]
D534121 Vibration motorFeb 22, 05Dec 26, 06[]
D509793 Vibration motorMar 16, 04Sep 20, 05[1301]
5845024 Optical fiber with lens and method of manufacturing the sameMar 14, 97Dec 01, 98[G02B]
5774264 Polarization independent optical isolatorSep 09, 96Jun 30, 98[G02B]
5528697 Integrated vibrating and sound producing deviceMay 06, 94Jun 18, 96[H04R]
5403374 Watch exterior parts and manufacturing method thereofMay 28, 92Apr 04, 95[B22F, C22C]
5293438 Microlensed optical terminals and optical system equipped therewith, and methods for their manufacture, especially an optical coupling method and optical coupler for use therewithSep 21, 92Mar 08, 94[G02B]
5204868 Optical isolator and method for assembling sameJul 12, 91Apr 20, 93[H01S]
RE31317 Rare earth-cobalt system permanent magnetic alloys and method of preparing sameNov 24, 80Jul 19, 83[H01F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0059,292 BENDING DEVICEAbandonedAug 27, 14Mar 03, 16[H02K, A61B, B21D]
6917270 Electromagnetic actuator and structure for mounting the sameExpiredApr 10, 98Jul 12, 05[H01H]
6873069 Very thin fan motor with attached heat sinkExpiredOct 06, 00Mar 29, 05[H05K]
6873234 Electromagnetic actuator mounting structureExpiredSep 07, 01Mar 29, 05[G08B, H04B]
6411050 Device for driving vibration actuatorExpiredAug 08, 00Jun 25, 02[H02M]
5952745 Cylindrical coreless vibrating motorExpiredMay 16, 97Sep 14, 99[H02K]
5889349 Cylindrical coreless vibrating motorExpiredOct 23, 95Mar 30, 99[H02K]
4987002 Process for forming a crystalline diamond filmExpiredMay 04, 89Jan 22, 91[C23C, B05D]
4902357 Method of manufacture of permanent magnetsExpiredApr 26, 88Feb 20, 90[H01F]
4801340 Method for manufacturing permanent magnetsExpiredJun 11, 87Jan 31, 89[H01F]
4772513 Method for forming a hard carbon thin film on article and applications thereofExpiredNov 04, 87Sep 20, 88[B32B]
4644518 Circuit connection for coils wound on yoke of an electromagnetic pickup cartridgeExpiredAug 30, 84Feb 17, 87[H04R]
4637009 Grounding circuit for pickup cartridge moving coilExpiredAug 30, 84Jan 13, 87[H04R, G11B]
4521877 Reproducing stylus and method of making sameExpiredFeb 02, 83Jun 04, 85[B24B, G11B]
4388486 Shielded lineExpiredApr 07, 81Jun 14, 83[H01B]
4369075 Method of manufacturing permanent magnet alloysExpiredDec 18, 80Jan 18, 83[H01F]
4221613 Rare earth-cobalt system permanent magnetic alloys and method of preparing sameExpiredJan 24, 79Sep 09, 80[H01F]
4183537 Lateral pressure detector for use with a phonograph record playerExpiredDec 12, 77Jan 15, 80[G11B]

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