Grundig E.M.V. Elektro-Mechanische Versuchsanstalt, Max Grundig Holland, Stiftung & Co. KG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 1137
 
  
 
H04B TRANSMISSION 1209
 
  
 
H04J MULTIPLEX COMMUNICATION 1124
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 1284
 
  
 
H04M TELEPHONIC COMMUNICATION 1162

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5835588 Digital dictation system with protection against unauthorized listening-inAug 15, 95Nov 10, 98[H04M, H04L, G11B]
5568480 Method of determining a free channel in FDM radiocommunication systemsApr 11, 95Oct 22, 96[H04B, H04J]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5265205 Office communication systemExpiredJul 03, 90Nov 23, 93[G06F]
4947243 Method of and arrangements for coding and decoding color television signals using a separate series arrangement of a low-pass filter and a vertical temporal filter for each color difference signalExpiredMar 03, 89Aug 07, 90[H04N]
4881134 Comb filter for the rejection of intertrack chromonance crosstalkExpiredMar 21, 88Nov 14, 89[H04N]
4741472 Method of soldering an integrated circuit and printed circuit boardExpiredJul 28, 86May 03, 88[B23K]
4713964 Device for optical turbidity measuring of gasesExpiredJul 16, 86Dec 22, 87[G01M]
4713688 Method for increasing resolution in a compatible television systemExpiredSep 24, 85Dec 15, 87[H04N]
4704788 Method for making magnetic headsExpiredNov 13, 86Nov 10, 87[G11B]
4630141 Tape cassette non-erase mechanismExpiredSep 27, 85Dec 16, 86[G11B]

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