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WAYSS & FREYTAG AG

Overview
  • Total Patents
    279
About

WAYSS & FREYTAG AG has a total of 279 patent applications. Its first patent ever was published in 1944. It filed its patents most often in Germany, EPO (European Patent Office) and United States. Its main competitors in its focus markets civil engineering, machines and mechanical elements are PETRUCCO S A, BETON & MONIERBAU AG and CHINA RAILWAY ENG CONSULTATION GROUP CO LTD.

Patent filings per year

Chart showing WAYSS & FREYTAG AGs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Schimpff Frithjof 26
#2 Knodel Rolf 14
#3 Knodel Rolf Dipl-Ing 9
#4 Schimpff Frithjof Dipl-Ing 7
#5 Wendt Andreas 7
#6 Bergenthal Wolfgang 5
#7 Zander Thomas 5
#8 Franz Dr-Ing Gotthard 4
#9 Bachus Dr-Ing Ernst 3
#10 Bay Dr-Ing Hermann 3

Latest patents

Publication Filing date Title
DE19752718C1 Method of conveying bulk material from pressure chamber
DE19741059C1 Method for producing solid rail bed
DE19723587A1 Solid track for rail-bound traffic, which is supported by an artificial structure made of concrete or composite concrete
DE19708896A1 Slab track, mainly for the switch area
DE19651578A1 Waste water treatment plant
DE19633594A1 Structural anchoring element for tensile members
DE19621170A1 Method for compensating settlements on solid carriageways for rail-bound traffic
DE19611079A1 Solid fuel pump for conveying plastic thick matter from a pressure chamber
DE19605515A1 Height adjustment of sleepers on railway line
DE19605514C1 Face cutting tool holder for advance shield working machine
DE19602521A1 Method of reducing air-borne noise from rail vehicles by application of sound absorption packing to track
DE19544666A1 Escape route for slab tracks
DE19541491A1 Fixed track for rail-bound traffic
DE19537621A1 Method of reducing air-borne noise from rail vehicles by application of sound absorption packing to track - comprising loose material encased in plastic and/or glass fibre mesh and positioned adjacent to rails and on supporting structure
DE19517384A1 Device for reducing airborne noise on rail traffic routes, primarily on solid carriageways for rail-bound traffic
DE4438397A1 Concrete sleeper for tracks with guide rails
DE4432052A1 Track line with reinforced concrete sleepers with a device for guiding a line conductor
DE4428163C1 Method for construction of permanent way in points area
DE4427962A1 Statically supporting, corrosion protected, thermally insulated coupling for two construction parts
EP0637645A1 Rigid railroad-base