4SILENCE B.V.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E01C CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR 227
 
  
 
E01F ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE119

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0362,855 DIFFRACTOR FOR DIFFRACTING SOUNDJul 07, 14Dec 15, 16[E01F]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9909269 Diffractor for diffracting soundJul 07, 14Mar 06, 18[E01F, E01B, E01C]
8696233 Road with sound diffractorsOct 22, 10Apr 15, 14[E01C]

Expired/Abandoned/Withdrawn Patents

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Top Inventors for This Owner

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