F. von Langsdorff Licensing Limited

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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 722
 
  
 
2501 BUILDING MATERIALS629
 
  
 
E04B GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS 344
 
  
 
A01G HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS, OR SEAWEED; FORESTRY; WATERING 131

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
D802165 Paving stoneJun 29, 16Nov 07, 17[2501]
D802166 Paving stoneJun 29, 16Nov 07, 17[2501]
D783862 Paving stoneJan 14, 16Apr 11, 17[2501]
9540776 Pollutant sequestering paving systemNov 26, 12Jan 10, 17[E01C]
D762882 Paving stoneDec 05, 13Aug 02, 16[2501]
D759843 Paving stoneOct 22, 14Jun 21, 16[2501]
D675345 Paving stoneNov 10, 10Jan 29, 13[2501]
7637687 Tree grille systemSep 01, 05Dec 29, 09[B25G, E01C]
7270497 Paving elementApr 28, 05Sep 18, 07[E01C]
7220078 Ground covering elements of artificial stone materialJul 26, 05May 22, 07[E04B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6938382 StockadeExpiredDec 09, 02Sep 06, 05[0000]
6790544 Multiple layer composite material consisting of cement-bound concrete and polymer-bound concrete and method for producing the sameExpiredMar 15, 02Sep 14, 04[C04B, E04C, E01C]
2003/0070,384 Ground covering element for making a grooveAbandonedSep 16, 02Apr 17, 03[E04C]
6430886 Building stone and masonry formed therefromExpiredMay 08, 01Aug 13, 02[E04C]
2002/0026,759 StockadeAbandonedAug 13, 01Mar 07, 02[E04B, E04C]
2002/0026,763 Wall element, especially a palisadeAbandonedAug 13, 01Mar 07, 02[E04C]
2001/0033,770 Pavement for traffic area with pavement elements made of artificial stone materialAbandonedMay 18, 01Oct 25, 01[E01C]
2001/0033,771 Pavement for traffic area with pavement elements made of artifical stone materialAbandonedMay 18, 01Oct 25, 01[E01C]
6171015 Anchoring of outdoor traffic areas provided with cobblestones or paving stonesExpiredJul 03, 97Jan 09, 01[E01C]
5713173 Hexagonal mosaic paving patternExpiredNov 04, 94Feb 03, 98[E04F]
4834575 Paving stoneExpiredMar 23, 87May 30, 89[E01C]
4583341 Interlocking ground covering elements and arrangements of them for mechanical layingExpiredApr 19, 82Apr 22, 86[E04C]
4353773 Device for lifting letter flapsExpiredNov 19, 80Oct 12, 82[B29H]
4194853 Method and apparatus for producing a ground covering from individual paving stonesExpiredApr 04, 78Mar 25, 80[E01C]
4185939 Ground covering slabExpiredJul 11, 78Jan 29, 80[E01C]

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