DITECH CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01S DEVICES USING STIMULATED EMISSION191
 
  
 
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
6407854 Fiber amplifier with fast transient response and constant gainMar 06, 00Jun 18, 02[H01S]
5969834 Method and apparatus for monitoring wavelength multiplexed optical signalsSep 03, 97Oct 19, 99[H04B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6381049 Multi-port optical multiplexer elementExpiredDec 15, 97Apr 30, 02[H04B]
6229632 Broadband optical transmission system utilizing differential wavelength modulationExpiredMay 12, 97May 08, 01[H04B, G02B]
6016213 Method and apparatus for optical amplifier gain and noise figure measurementExpiredJul 08, 96Jan 18, 00[H04B]
5887091 Bidirectional optical amplifier having flat gainExpiredJul 18, 97Mar 23, 99[G02N]
5861981 Optical amplifier having dynamically shaped gainExpiredAug 20, 97Jan 19, 99[G02B, H01S]

Top Inventors for This Owner

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