LINOTYPE-HELL AG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B41N PRINTING PLATES OR FOILS 118
 
  
 
H04N PICTORIAL COMMUNICATION, e.g. TELEVISION 1241

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5896815 Punch module for printing plate exposersJan 30, 97Apr 27, 99[B41N]
RE32139 Method and arrangement for the avoidance of errors during the reproduction of an image patternApr 21, 83May 06, 86[H04N]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5866974 Electron beam generator with magnetic cathode-protection unitExpiredMay 06, 97Feb 02, 99[H01J]
5459297 Method and apparatus for manufacturing a texture drumExpiredMar 24, 94Oct 17, 95[B23K]
5369425 Device for automatically clamping and releasing recording material and operation of said deviceExpiredFeb 18, 92Nov 29, 94[G01D]
5355156 Device for automatically clamping and releasing recording material and operation of said deviceExpiredFeb 18, 92Oct 11, 94[H04N]
4975784 Method for graving printing formsExpiredMar 23, 81Dec 04, 90[H04F]
4967895 Parameter control system for electronic parking meterExpiredOct 05, 88Nov 06, 90[G07F]
4944593 Volume-measuring method for surface depressionsExpiredDec 30, 87Jul 31, 90[G01B]
4919501 Opto-mechanical deflectorExpiredJan 23, 89Apr 24, 90[G02B]
4790507 Tool for the precise movement of machinesExpiredMay 18, 87Dec 13, 88[F16M]
4736099 Scan device with light mixer and diffusing means for half-tone transparency originalsExpiredSep 18, 86Apr 05, 88[H01J, G01N]
4733046 Pressure-tight vacuum chamber of an electron beam engraving machine for electron beam engraving of printing cylinders for printing technologyExpiredAug 28, 86Mar 22, 88[B23K]
4729037 Method for recording printing formsExpiredApr 29, 87Mar 01, 88[H04N]
4718629 Vacuum holding deviceExpiredJun 12, 86Jan 12, 88[A45D]
4709395 Method and apparatus for minimizing errors in the digital processing of electrical signalsExpiredJul 17, 84Nov 24, 87[G06K]
4667948 Apparatus for isolating offset printing plates and removing intermediate paper layersExpiredOct 31, 85May 26, 87[B65H]
4668979 Production of color separations for single color printing in which separation hues and colors are optimally defined with respect to hue, color separation, and luminanceExpiredDec 12, 84May 26, 87[H04N, G03F]
4657381 Mounting device for reproduction apparatusExpiredApr 06, 81Apr 14, 87[G03B]
4645336 Method and apparatus for determining the trimmed images of originals for reproduction on printing technologyExpiredJun 11, 86Feb 24, 87[G03B]
4636064 Device for the automatic loading of film material on a suction plateExpiredFeb 21, 85Jan 13, 87[G03B]
4631579 Method and apparatus for the production of color separations for single color printingExpiredDec 12, 84Dec 23, 86[H04N, G03F]

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