ENTWICKLUNGSGESELLSCHAFT FUR AKUSTIK (EFA) MIT BESCHRANKTER HAFTUNG

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E04B GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS 146
 
  
 
F02B INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL 171

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7954596 Acoustically and thermally acting insulationMay 31, 07Jun 07, 11[E04B, F02B]
7137477 Sound absorbersDec 29, 03Nov 21, 06[E04B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2011/0083,792 VELOUR CARPET WITH TUFTING-LIKE SURFACEAbandonedMay 28, 09Apr 14, 11[D04H]
7445837 Method for producing composite elements and composite elementExpiredJun 29, 01Nov 04, 08[B32B]
7419188 Vehicle undershieldExpiredJul 09, 02Sep 02, 08[B62D]
2006/0278,322 Shaping of air permeable structural members with thermoplastic bindersAbandonedJul 30, 04Dec 14, 06[B29C]

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