Technical Communications Corporation

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01S RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES1108
 
  
 
H04K SECRET COMMUNICATION; JAMMING OF COMMUNICATION157
 
  
 
H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION 1284

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5822430 System for encoding encryption/decryption information into IFF challengesNov 20, 96Oct 13, 98[H04L, G01S, H04K]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4856063 No-overhead synchronization for cryptographic systemsExpiredJan 27, 88Aug 08, 89[H04L]
4433211 Privacy communication system employing time/frequency transformationExpiredNov 04, 81Feb 21, 84[H04L, H04K]
4392021 Secure facsimile transmission system using time-delay modulationExpiredJul 28, 80Jul 05, 83[H04K]
4276652 Secure communication system with improved frequency-hopping arrangementExpiredOct 02, 78Jun 30, 81[H04K]
4195202 Voice privacy system with amplitude maskingExpiredJan 03, 78Mar 25, 80[H04K]

Top Inventors for This Owner

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