Public Works Research Institute

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C12M APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY 148
 
  
 
G01C MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY 1104
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446
 
  
 
G07B TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS126

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6378772 Road marker magnetizing methodJul 30, 99Apr 30, 02[G07B]
6317682 Road information communicating systemAug 18, 99Nov 13, 01[G01C]
6246955 Vehicle communication system dynamically allocating channels and a method for the sameApr 19, 99Jun 12, 01[G06F]
5160604 Toxic substance-detecting system with fixed microorganism membrane for water quality-monitoringFeb 05, 91Nov 03, 92[C12M]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4985149 Anaerobic digestion methodExpiredMar 20, 89Jan 15, 91[C02F]

Top Inventors for This Owner

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