HITACHI ELECTRONIC DEVICES CO., LTD.

Patent Owner

Watch Compare Add to Portfolio

Stats

Details

Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 3125

Top Patents (by citation)

Upgrade to the Professional Level to View Top Patents for this Owner. Learn More

Recent Publications

  • No Recent Publications to Display

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6563258 Color cathode ray tube having an improved electron gun electrodeDec 18, 00May 13, 03[H01J]
6541903 Cathode ray tube and method for punched electrode profile with predetermined angular rangeOct 20, 00Apr 01, 03[H01J]
5894190 Color cathode ray tube having a large-diameter lensMar 21, 97Apr 13, 99[H01J]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2009/0207,337 Liquid crystal display deviceAbandonedApr 20, 09Aug 20, 09[G02F]
7075221 Projection tube having different neck diametersExpiredAug 07, 03Jul 11, 06[H01J]
6998767 Projection tube having different neck diametersExpiredJul 19, 01Feb 14, 06[H01J]
6847159 Projection tube having different neck diametersExpiredAug 24, 01Jan 25, 05[H01J]
6815913 Cathode ray tubeExpiredJul 12, 02Nov 09, 04[H01J, G09G]
6741020 Cathode ray, tube including an electron gun having specific relation of axial length of focus electrode and focus electrode-screen distanceExpiredJan 09, 03May 25, 04[H01J]
6707242 Color cathode ray tubeExpiredJun 11, 02Mar 16, 04[H01J]
6653788 Magnetron having a lowered oscillation frequency and processing equipment employing the sameExpiredOct 17, 01Nov 25, 03[H01J]
6624559 Cathode ray tubeExpiredApr 03, 01Sep 23, 03[H01J]
6583547 Cathode ray tube with UPF type electron gun having particular electrode structure and spacingExpiredMar 08, 00Jun 24, 03[H01J]
6577052 Electron gun for cathode ray tubeExpiredFeb 09, 00Jun 10, 03[H01J]
6538385 Cathode-ray tube and flat electrode of electronic gun and production methodExpiredMar 30, 01Mar 25, 03[H01J]
6509682 Cathode ray tube having an improved electron gunExpiredMar 16, 01Jan 21, 03[H01J]
6507143 Cathode ray tube including an electron gun having specific relation between axial length of focus electrode and lens-screen distanceExpiredJan 26, 01Jan 14, 03[H01J]
6501214 Color cathode ray tubeExpiredOct 04, 00Dec 31, 02[H01J]
6495952 Cathode ray tube having an internal voltage-dividing resistorExpiredFeb 29, 00Dec 17, 02[H01J]
6492768 Cathode ray tube having an improved indirectly heated cathodeExpiredJun 04, 99Dec 10, 02[H01J]
6476543 Cathode ray tube having an improved electrode assemblyExpiredOct 30, 00Nov 05, 02[H01J]
6476544 Color cathode ray tubeExpiredMar 09, 00Nov 05, 02[H01J]
6465942 Color cathode ray having a shadow mask structure with curl reduced in a skirt portion thereofExpiredJun 22, 01Oct 15, 02[H01J]

View all patents..

Top Inventors for This Owner

Upgrade to the Professional Level to View Top Inventors for this Owner. Learn More

We are sorry but your current selection exceeds the maximum number of comparisons () for this membership level. Upgrade to our Level for up to -1 comparisons!

We are sorry but your current selection exceeds the maximum number of portfolios (0) for this membership level. Upgrade to our Level for up to -1 portfolios!.