KYOSAN ELECTRIC MFG. CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 1389
 
 
 
H05H PLASMA TECHNIQUE 723
 
 
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 4107
 
 
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 3125
 
 
 
B61L GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC 224
 
 
 
H03F AMPLIFIERS 281
 
 
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 199
 
 
 
H01P WAVEGUIDES; RESONATORS, LINES OR OTHER DEVICES OF THE WAVEGUIDE TYPE 159
 
 
 
H01T SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES 125
 
 
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 176

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9806629 Single-phase inverterDec 26, 13Oct 31, 17[H02M]
9699878 Unignited plasma state discrimination device and unignited plasma state discrimination methodDec 26, 13Jul 04, 17[H01J, H05H]
9621064 Arc quenching circuit for a power supply in a plasma generatorDec 26, 13Apr 11, 17[H02M]
9590565 Class-D amplifierDec 26, 13Mar 07, 17[H03F]
9450519 DC power source, and DC power source control methodDec 26, 13Sep 20, 16[H05H, H02M]
9451687 High-frequency power supply device, and plasma ignition methodMar 12, 14Sep 20, 16[H05H]
9216749 Occupancy detection device and occupancy detection methodAug 07, 13Dec 22, 15[B61L]
9162689 Estimated train occupancy range determination device, onboard system, and estimated train occupancy range determination methodAug 07, 13Oct 20, 15[B61L]
9160240 DC power supply device, and control method for DC power supply deviceSep 05, 12Oct 13, 15[H01T, H05B, H05H, H02M, H02J]
9137885 DC power supply device, and control method for DC power supply deviceSep 07, 12Sep 15, 15[H05B, H05H, H02M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6760234 DC power supply apparatus for a plasma generating apparatusExpiredAug 27, 02Jul 06, 04[H02M]
5343377 Method of controlling switching regulatorExpiredOct 30, 92Aug 30, 94[H02M]
4605865 Input drive apparatus for power transistorExpiredJun 26, 84Aug 12, 86[H03K]

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