Assignee
HOCHTIEF AG HOCH TIEFBAUTEN
DE·33 granted patents·458 citations·filing 1974–1990
Top patents by PatentIndex Score
33 records- 0181US4785559AExcavator for making a substantially vertical slot in the groundHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1987·Granted Nov 22, 1988·37 cites·1 claims
- 0276US4670315AProcess for providing a synthetic resin coating on a concrete structureHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1985·Granted Jun 2, 1987·40 cites·11 claims
- 0372US4911578AProcess for making a tunnel and advancing a tunneling read with a wall-supporting shieldHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1988·Granted Mar 27, 1990·35 cites·3 claims
- 0470US4804563AMethod and apparatus for the spray placing of concrete layersHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1987·Granted Feb 14, 1989·26 cites·9 claims
- 0564US4621947AMethod of and apparatus for the lining of a tunnel with concreteHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1984·Granted Nov 11, 1986·13 cites·6 claims
- 0662US4856936AForm for concrete-placement tunnel liningHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1988·Granted Aug 15, 1989·29 cites·5 claims
- 0760US4744425AApparatus for excavating a substantially vertical slotHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1987·Granted May 17, 1988·22 cites·2 claims
- 0859US5052309ATrack carrier for a high speed magnetic levitation transport systemHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1989·Granted Oct 1, 1991·30 cites·10 claims
- 0958US4436448AExcavating machine for tunnels and galleriesHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1980·Granted Mar 13, 1984·12 cites·2 claims
- 1052US4252439ALaser alignment apparatusHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1978·Granted Feb 24, 1981·15 cites·2 claims
- 1151US4789267AMethod of and apparatus for concrete tunnel liningHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1987·Granted Dec 6, 1988·18 cites·14 claims
- 1247US4627765ATunneling machineHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1984·Granted Dec 9, 1986·6 cites·6 claims
- 1346US3991899ACylindrical pressure chamber for nuclear reactor or the likeHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1974·Granted Nov 16, 1976·11 cites·7 claims
- 1445US4824022AMethod of and apparatus for applying a sprayed concrete layer to a surfaceHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1988·Granted Apr 25, 1989·14 cites·5 claims
- 1544US4645378AMovable form front for a tunnel-lining formHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1985·Granted Feb 24, 1987·13 cites·12 claims
- 1644US4309610AMethod of determining the location, orientation and pattern of reinforcing members in reinforced concreteHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1980·Granted Jan 5, 1982·11 cites·6 claims
- 1743US4768898AProcess and apparatus for continuously lining a tunnel with extruded concreteHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1987·Granted Sep 6, 1988·11 cites·7 claims
- 1841US5104594ADrying the surface of a fresh concrete bodyHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1990·Granted Apr 14, 1992·22 cites·9 claims
- 1941US4820458AProcess for continuously lining a tunnel with extruded concreteHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1986·Granted Apr 11, 1989·10 cites·3 claims
- 2041US4629255ATunneling machineHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1985·Granted Dec 16, 1986·11 cites·4 claims
- 2138US4687374AMethod of and apparatus for concrete tunnel liningHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1986·Granted Aug 18, 1987·9 cites·6 claims
- 2235US4209338AConcrete for the lining of tunnel tubesHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1978·Granted Jun 24, 1980·5 cites·6 claims
- 2334US4977715AReinforced-concrete building elementHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1989·Granted Dec 18, 1990·14 cites·5 claims
- 2434US4844656AEarth pressure shieldHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1988·Granted Jul 4, 1989·7 cites·5 claims
- 2534US4729693ATunnel excavatorHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1986·Granted Mar 8, 1988·6 cites·9 claims
- 2632US4848963AEarth pressure shieldHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1988·Granted Jul 18, 1989·9 cites·9 claims
- 2731US4613258AApparatus for setting and removing tunnel casing ringsHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1985·Granted Sep 23, 1986·5 cites·9 claims
- 2831US4264542AMethod of lining tunneled tubesHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1979·Granted Apr 28, 1981·4 cites·2 claims
- 2929US4909668AMovable sealing assembly for tunneling machinesHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1987·Granted Mar 20, 1990·0 cites·1 claims
- 3029US4640646AApparatus for the construction of tunnels and shaftsHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1985·Granted Feb 3, 1987·3 cites·8 claims
- 3128US4568202ABearing arrangement for a boring head of a tunneling machineHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1985·Granted Feb 4, 1986·1 cites·6 claims
- 3227US4069680AMethod of and apparatus for the anchoring of drilling and production platforms on a structure sunk on a sea bottomHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1977·Granted Jan 24, 1978·7 cites·10 claims
- 3323US4854776AProcess and apparatus for lining a tunnel with concreteHOCHTIEF AG HOCH TIEFBAUTEN·Filed 1988·Granted Aug 8, 1989·2 cites·5 claims
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