Epson Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H04B TRANSMISSION 1209

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5263183 Radio antenna tuning circuitApr 30, 91Nov 16, 93[H04B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6674423 Drive unit and liquid crystal deviceExpiredJan 19, 01Jan 06, 04[G09G]
5518373 Compressor start-up controllerExpiredFeb 16, 94May 21, 96[F04B]
4838657 Liquid crystal shutterExpiredNov 14, 85Jun 13, 89[G02F]
4806955 Ink jet printer of the ink-on-demand typeExpiredMar 11, 88Feb 21, 89[G01D]
4787761 Miniature printerExpiredSep 30, 85Nov 29, 88[B41J]
4727380 Photosensitive printing apparatusExpiredMay 31, 85Feb 23, 88[G01D]
4714363 Print control device for a dot matrix printerExpiredMay 20, 85Dec 22, 87[B41J]
4712931 Color printer including a multiple color ink ribbon cartridge and tensioning deviceExpiredMar 14, 85Dec 15, 87[B41J]
D291442 ComputerExpiredSep 24, 84Aug 18, 87[]
4683819 Compact printer with hammer structure within type drumExpiredJun 26, 85Aug 04, 87[B41J]
4684960 Thermoelectric printing apparatusExpiredMar 25, 85Aug 04, 87[G01D]
4683183 Method of manufacturing MIM elements in liquid crystal displaysExpiredJan 10, 85Jul 28, 87[G02F]
4660935 Liquid crystal display device having electrodes shaped to compensate for positioning errorExpiredFeb 21, 85Apr 28, 87[G02F]
D289167 Electronic printerExpiredOct 09, 84Apr 07, 87[]
4652159 PrinterExpiredMay 02, 85Mar 24, 87[B41J]
D288447 PlotterExpiredJun 28, 84Feb 24, 87[]
4640583 Display panel having an inner and an outer seal and process for the production thereofExpiredJul 19, 84Feb 03, 87[G02F]
D287727 Electronic printerExpiredSep 24, 84Jan 13, 87[]
4636258 Ink for thermal transfer printingExpiredAug 20, 85Jan 13, 87[C09D]
4636866 Personal liquid crystal image displayExpiredDec 22, 83Jan 13, 87[H04N]

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