PANASONIC PHOTO & LIGHTING CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR 1186
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 5106
 
  
 
H01C RESISTORS127
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 1127
 
  
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 1153
 
  
 
H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 1119
 
  
 
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 1101

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8241783 Battery lid structure for electronic deviceJan 10, 08Aug 14, 12[H01M]
7859229 Discharge deviceMar 29, 06Dec 28, 10[H02M]
7812571 Charging deviceMar 29, 06Oct 12, 10[H02J]
6810208 Electric discharge tube, method of manufacturing the tube, stroboscopic device using the tube and cameraFeb 04, 04Oct 26, 04[H01J, G03B]
6150770 Flash apparatusFeb 16, 99Nov 21, 00[H05B]
6011929 Flash apparatus capable of varying emission angleJul 25, 97Jan 04, 00[G03B]
5911085 Variable emission angle strobe light and control method thereforMay 29, 97Jun 08, 99[G03B]
5869936 Strobe deviceJul 29, 97Feb 09, 99[H05B]
5852751 Strobe light and image recorder containing that strobe lightJun 20, 97Dec 22, 98[G03B]
5842047 Strobe light and photographic camera incorporating the sameJun 20, 97Nov 24, 98[G03B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7683550 Low-pressure discharge lamp and back light device using the sameExpiredFeb 12, 08Mar 23, 10[H01J]
7652434 Electronic flash unit and manufacturing method thereofExpiredNov 28, 02Jan 26, 10[H05B]
7358675 Low-pressure discharge lamp and back light device using sameExpiredJul 17, 03Apr 15, 08[H01J]
7276851 Discharge lamp device and backlight having external electrode unitExpiredApr 17, 03Oct 02, 07[H01J]
6629764 Illuminator and LCD device comprising the illuminatorExpiredOct 30, 01Oct 07, 03[F21V]
6531832 Discharge lamp and electronic flash device using the sameExpiredDec 14, 01Mar 11, 03[H05B]
6301443 Low profile strobe device with conductive elastic membersExpiredJul 28, 97Oct 09, 01[G03B]
6028398 Cold cathode fluorescent lamp driving apparatus using a piezoelectric transformerExpiredAug 15, 96Feb 22, 00[H05B]
5053802 Electric flash apparatusExpiredMar 28, 90Oct 01, 91[G03B]
5038080 Electric flash apparatusExpiredApr 23, 90Aug 06, 91[H05B]
5028945 Electric zoom cameraExpiredSep 18, 90Jul 02, 91[G03B]
5004958 Strobe apparatusExpiredAug 02, 89Apr 02, 91[H05B]
4959672 Motor-driven film winderExpiredOct 16, 89Sep 25, 90[G03B]

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