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IPU LTD

Overview
  • Total Patents
    136
About

IPU LTD has a total of 136 patent applications. Its first patent ever was published in 1973. It filed its patents most often in Germany, EPO (European Patent Office) and Japan. Its main competitors in its focus markets machine tools, civil engineering and materials and metallurgy are NIPPON SPENG CO, AUTE AUTOGENE TECH and BIER EMIL.

Patent filings in countries

World map showing IPU LTDs patent filings in countries

Patent filings per year

Chart showing IPU LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ritz Otto Ing Grad 38
#2 Hennecke Franz 37
#3 Zeley Juan A 6
#4 Zeley J 5
#5 Mcdonald Bridget M A 5
#6 Zeley J Antonio 3
#7 Zeley J A 3
#8 Longstroem Carl H 2
#9 Jiee Ee Zeree 2
#10 Furantsu Hennetsuke 2

Latest patents

Publication Filing date Title
DE3105892A1 Fire barrier with clearing device
DE3103402A1 Flame cutting machine
DE3035239A1 Flame cutting machine - for moving bars with clamping tongs for carriage and friction clutch for burner drive
DE3034811A1 Cut=off equipment for continuous casting appts. - with torch cross-traverse aligned by rollers against strand side
DE3030068A1 Automatic fire door for conveyor passages - has fusible link-suspended hinged shield elements fitted around conveyor track
DE3025961A1 Oxy-gas for paired-torch tick steel cutting machine - has feed pipes aligned in direction of travel with fuel pipe in middle
DE3019691A1 Removing slag beams from continuously cast slabs etc. - by flame de-seaming burners directing streams of fuel gas and oxygen onto edges of cut slabs
DE3010073A1 Flame-cutting or surface treatment nozzle - has internal mixing zones, with heating gas ducts in groups with differing mixture proportions
DE3010072A1 Hand de-seaming appts. for metallurgical works - where gas burner head and nozzle are provided with ribs and bulges so they are protected against damage and wear
DE3010024A1 Fire barrier for tubes passing through partitions - consists of gate-like element slidable in gap between tube ends to cut off flow of working medium
DE3006906A1 FIRE CLOSING DEVICE FOR A WALL OPENING OPENING, IN PARTICULAR IN CONSTRUCTIONS WITH SPACING WALL ELEMENTS
DE3005234A1 Transport passage with fire barrier - uses swivelling fireproof leaf on turntable carrying bridging rail sections
DE3005004A1 Flame cutting of short slabs in continuous casting plant - using extra rollers in conveyor track so short cut pieces cannot fall through gaps between rollers
DE3004064A1 FIRE LOCKING DEVICE
DE3004044A1 FIRE LOCKING DEVICE
DE3002630A1 Heater for foundries - esp. where several adjustable gas burners are used to preheat casting pipe on base of tundish
DE3002421A1 VERTICAL MOVABLE LOCK
DE2947582A1 FIRE LOCKING DEVICE
DE2946058A1 FIRE PROTECTION LOCKING DEVICE
DE2943539A1 Flame cutting of continuous castings etc. - where jets of high pressure oxygen are used to remove slag beards formed during cutting