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Patents Grants
last 30 patents
Information
Patent Grant
Guide unit for a tension member at a structural component
Patent number
6,360,501
Issue date
Mar 26, 2002
Dyckerhoff & Widmann Aktiengesellschaft
Ingolf Litzenburger
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Corrosion-protected tension member of steel
Patent number
6,322,281
Issue date
Nov 27, 2001
Dyckerhoff & Widmann Aktiengesellschaft
Dieter Jungwirth
D07 - ROPES CABLES OTHER THAN ELECTRIC
Information
Patent Grant
Method of mounting and tensioning a freely tensioned tension member...
Patent number
6,055,691
Issue date
May 2, 2000
Dyckerhoff & Widmann Aktiengesellschaft
Oswald Nutzel
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Sealing arrangement in a bundled tension member for prestressed con...
Patent number
5,924,250
Issue date
Jul 20, 1999
Dyckerhoff & Widmann Aktiengesellschaft
Dieter Jungwirth
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Method of tensioning a tension member composed of a plurality of in...
Patent number
5,809,710
Issue date
Sep 22, 1998
Dyckerhoff & Widmann Aktiengesellschaft
Dieter Jungwirth
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Device for use in inserting individual tension elements of a freely...
Patent number
5,803,641
Issue date
Sep 8, 1998
Dyckerhoff & Widmann Aktiengesellschaft
Oswald Nutzel
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Method of producing an intended breaking point in a tension member...
Patent number
5,707,181
Issue date
Jan 13, 1998
Dyckerhoff & Widmann Aktiengesellschaft
Hans-Peter von Allmen
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Method of cleaning and exposing portions of limited length of stran...
Patent number
5,683,519
Issue date
Nov 4, 1997
Dyckerhoff & Widmann Aktiengesellschaft
Alto Mannhart
B08 - CLEANING
Information
Patent Grant
Method of introducing a casting compound into a hollow space
Patent number
5,624,628
Issue date
Apr 29, 1997
Dyckerhoff & Widmann Aktiengesellschaft
Werner Hansch
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Method for manufacturing an anchor element for a soil anchor for a...
Patent number
5,603,589
Issue date
Feb 18, 1997
Dyckerhoff & Widmann Aktiengesellschaft
Hans-Peter von Allmen
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Corrosion protected support element for a soil anchor or a rock anc...
Patent number
5,472,296
Issue date
Dec 5, 1995
Dyckerhoff & Widmann Aktiengesellschaft
Hans-Peter von Allmen
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Method and apparatus for producing prefabricated components from pr...
Patent number
5,439,629
Issue date
Aug 8, 1995
Dyckerhoff & Widmann Aktiengesellschaft
Joachim Heintz
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Arrangement for severing the tension member of a soil anchor at a p...
Patent number
5,389,765
Issue date
Feb 14, 1995
Dyckerhoff & Widmann Aktiengesellschaft
Toni Baer
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Mine roof support system
Patent number
5,193,940
Issue date
Mar 16, 1993
Dyckerhoff & Widmann AG
Lawrence E. Long
E21 - EARTH DRILLING MINING
Information
Patent Grant
Prestressed concrete railroad tie
Patent number
5,135,164
Issue date
Aug 4, 1992
Dyckerhoff & Widmann Aktiengesellschaft
Peter Auer
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Bundled tensioning member for prestressing a tall structural member...
Patent number
5,056,284
Issue date
Oct 15, 1991
Dyckerhoff & Widmann AG
Franz Ruckdeschel
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Anchoring device for the rod-shaped tension member of an anchor, es...
Patent number
4,971,493
Issue date
Nov 20, 1990
Dyckerhoff & Widmann Aktiengesellschaft
Thomas Herbst
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Method of and apparatus for locating operational surfaces on a trac...
Patent number
4,970,773
Issue date
Nov 20, 1990
Dyckerhoff & Widmann Aktiengesellschaft
Wilhelm Buchler
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Anchoring arrangement for a rod-shaped tension member formed of fib...
Patent number
4,958,961
Issue date
Sep 25, 1990
Dyckerhoff & Widmann Aktiengesellschaft
Thomas Herbst
E04 - BUILDING
Information
Patent Grant
Hot-rolled steel bar with helically extending ribs, method of and a...
Patent number
4,953,379
Issue date
Sep 4, 1990
Dyckerhoff & Widmann Aktiengesellschaft
Erich Richartz
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Hot-rolled concrete reinforcing bar, in particular reinforcing ribb...
Patent number
4,922,681
Issue date
May 8, 1990
Dyckerhoff & Widmann AG
Dieter Russwurm
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Impervious layer formation process and landfill adsorption system
Patent number
4,908,129
Issue date
Mar 13, 1990
Dyckerhoff & Widmann Aktiengesellschaft
Klemens Finsterwalder
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Grant
Railroad roadway for high speed rail-mounted vehicles
Patent number
4,905,896
Issue date
Mar 6, 1990
Dyckerhoff & Widmann Aktiengesellschaft
Josef Eisenmann
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Apparatus for forming slide surfaces on track for electromagnetical...
Patent number
4,905,359
Issue date
Mar 6, 1990
Dyckerhoff & Widmann Aktiengesellschaft
Lorenz Maier
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Anchoring device, such as a rock anchor
Patent number
4,904,122
Issue date
Feb 27, 1990
Dyckerhoff & Widmann Aktiengesellschaft
Thomas Herbst
E21 - EARTH DRILLING MINING
Information
Patent Grant
Container system for the storage of wastes
Patent number
4,884,711
Issue date
Dec 5, 1989
Dyckerhoff & Widmann AG
Helmut Bomhard
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Grant
Corrosion protected tension member for use in prestressed concrete...
Patent number
4,878,327
Issue date
Nov 7, 1989
Dyckerhoff & Widmann Aktiengesellschaft
Oswald Nutzel
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Method for producing rolled steel products, particularly threaded s...
Patent number
4,877,463
Issue date
Oct 31, 1989
Dyckerhoff & Widmann Aktiengesellschaft
Max Aicher
C21 - METALLURGY OF IRON
Information
Patent Grant
Method of placing steel tendons through ducts in a concrete structu...
Patent number
4,856,254
Issue date
Aug 15, 1989
Dyckerhoff & Widmann Aktiengesellschaft
Dieter Jungwirth
E04 - BUILDING
Information
Patent Grant
Method of the formation of slide surfaces on a track for electromag...
Patent number
4,856,173
Issue date
Aug 15, 1989
Dyckerhoff & Widmann Aktiengesellschaft
Lorenz Maier
B28 - WORKING CEMENT, CLAY, OR STONE
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
73433096 - FORUM
Serial number
73433096
Registration number
1326984
Filing date
Jul 5, 1983
Dyckerhoff & Widmann Aktiengesellschaft
19 - Building materials (non-metallic)
Information
Trademark
73347733 - BIOWALL
Serial number
73347733
Registration number
1239447
Filing date
Jan 29, 1982
Dyckerhoff & Widmann Aktiengesellschaft
19 - Building materials (non-metallic)
Information
Trademark
73325278 - THREADBAR
Serial number
73325278
Registration number
1253576
Filing date
Aug 26, 1981
Dyckerhoff & Widmann Aktiengesellschaft
6 - Common metals and their alloys
Information
Trademark
73321464 - DSI
Serial number
73321464
Registration number
1239953
Filing date
Jul 30, 1981
Dyckerhoff & Widmann Aktiengesellschaft
6 - Common metals and their alloys
Information
Trademark
73231775 - DW
Serial number
73231775
Registration number
1188933
Filing date
Sep 18, 1979
Dyckerhoff & Widmann Aktiengesellschaft
37 - Building construction
Information
Trademark
73231758 - DYWIDAG
Serial number
73231758
Registration number
1171632
Filing date
Sep 18, 1979
Dyckerhoff & Widmann Aktiengesellschaft
37 - Building construction
Information
Trademark
72427847 - DW
Serial number
72427847
Registration number
997397
Filing date
Jun 21, 1972
DYCKERHOFF & WIDMANN AKTIENGESELLSCHAFT
6 - Common metals and their alloys
Information
Trademark
72427154 - DYWIDAG
Serial number
72427154
Registration number
979697
Filing date
Jun 14, 1972
DYCKERHOFF & WIDMANN AKTIENGESELLSCHAFT
6 - Common metals and their alloys