21ST CENTURY AIRSHIP TECHNOLOGIES INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B64B LIGHTER-THAN-AIR AIRCRAFT 213

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5294076 Airship and method for controlling its flightJul 23, 92Mar 15, 94[B64B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8245966 Airship and vectored propeller drive thereforExpiredFeb 04, 10Aug 21, 12[B64D]
2011/0198,438 Propulsion and steering system for an airshipAbandonedFeb 18, 10Aug 18, 11[B64B]
7552893 Airship & method of operationExpiredSep 28, 05Jun 30, 09[B64B]
2007/0102,571 Airship for lifting heavy loads & methods of operationAbandonedOct 20, 05May 10, 07[B64B]
7055777 Airship and method of operationExpiredJun 25, 02Jun 06, 06[B64B]
6966523 Airship and method of operationExpiredNov 24, 03Nov 22, 05[B64B]

Top Inventors for This Owner

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