OPVISTA, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
H04B TRANSMISSION 7203
 
 
 
H04J MULTIPLEX COMMUNICATION 3122
 
 
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158
 
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8139476 Optical ring networks using circulating optical probe in protection switching with automatic reversionOct 13, 06Mar 20, 12[G06F, G01R, G01F]
7577367 Optical communication using duobinary modulationJun 15, 05Aug 18, 09[H04B]
7515833 Optical double sideband modulation technique with increased spectral efficiencyJun 09, 06Apr 07, 09[H04B]
7499647 Fully protected broadcast and select all optical networkJan 06, 03Mar 03, 09[H04J]
7206520 Method and apparatus for interleaved optical single sideband modulationFeb 21, 06Apr 17, 07[H04B]
7120359 Broadcast and select all optical networkJun 19, 02Oct 10, 06[H04B]
7024112 In-band wavelength conversion wavelength buffering and multi-protocol lambda switchingJan 08, 01Apr 04, 06[H04J]
7003231 Method and apparatus for interleaved optical single sideband modulationApr 19, 01Feb 21, 06[H04B]
6895184 Interconnected broadcast and select optical networks with shared wavelengthsNov 21, 01May 17, 05[H04B]
6788899 Dynamic wavelength add/drop multiplexer for UDWDM optical communication systemMar 23, 01Sep 07, 04[H04J]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2005/0158,047 Optical ring networks with failure protection mechanismsAbandonedJul 16, 04Jul 21, 05[H04B]
2002/0114,034 Split wave method and apparatus for transmitting data in long-haul optical fiber systemsAbandonedJan 09, 02Aug 22, 02[H04B, H04J]

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