Assignee
BALCKE DUERR AG
DE·62 granted patents·1,407 citations·filing 1973–1996
Top patents by PatentIndex Score
62 records- 0197US4498786AApparatus for mixing at least two individual streams having different thermodynamic functions of stateBALCKE DUERR AG·Filed 1981·Granted Feb 12, 1985·222 cites·5 claims
- 0295US4099427APlanetary gearingBALCKE DUERR AG·Filed 1976·Granted Jul 11, 1978·57 cites·44 claims
- 0392US3977068ADevice and method for expansion-swaging tubes into the bores of a tube plateBALCKE DUERR AG·Filed 1975·Granted Aug 31, 1976·49 cites·11 claims
- 0489US4099675ASprinkler head for water spray cooling installationsBALCKE DUERR AG·Filed 1976·Granted Jul 11, 1978·76 cites·18 claims
- 0588US4782571AMethod for securing straight tubes between two tube sheets in a pressure-tight mannerBALCKE DUERR AG·Filed 1987·Granted Nov 8, 1988·33 cites·6 claims
- 0686US4875270AMethod of securing parts to a hollow memberBALCKE DUERR AG·Filed 1989·Granted Oct 24, 1989·54 cites·3 claims
- 0781US4133198AApparatus for bending large area construction unitsBALCKE DUERR AG·Filed 1977·Granted Jan 9, 1979·29 cites·7 claims
- 0879US4827605AApparatus for securing straight tubes between two tube sheets in a pressure-tight mannerBALCKE DUERR AG·Filed 1988·Granted May 9, 1989·35 cites·6 claims
- 0976US4182402ARotary regenerative air heaterBALCKE DUERR AG·Filed 1977·Granted Jan 8, 1980·30 cites·4 claims
- 1075US4580401AForced-air cooled condenser systemBALCKE DUERR AG·Filed 1984·Granted Apr 8, 1986·23 cites·11 claims
- 1175US4236299AMethod and device for winding spiral fins onto oval tubingBALCKE DUERR AG·Filed 1978·Granted Dec 2, 1980·16 cites·16 claims
- 1275US3979810AMethod of hermetically swaging tubes into tube platesBALCKE DUERR AG·Filed 1975·Granted Sep 14, 1976·26 cites·9 claims
- 1373US3945106AMethod of mounting a natural draft cooling towerBALCKE DUERR AG·Filed 1973·Granted Mar 23, 1976·29 cites·9 claims
- 1472US4218408ACooling tower with ripple platesBALCKE DUERR AG·Filed 1978·Granted Aug 19, 1980·37 cites·7 claims
- 1572US4003970ACombined wet and dry heat transfer system and method for cooling towersBALCKE DUERR AG·Filed 1975·Granted Jan 18, 1977·31 cites·15 claims
- 1670US5547540ADevice for cooling gases and optionally drying solid particles added to the gasBALCKE DUERR AG·Filed 1994·Granted Aug 20, 1996·37 cites·3 claims
- 1770US4135575ATube wall made of tubes which extend parallel to one another and horizontal to inclinedBALCKE DUERR AG·Filed 1977·Granted Jan 23, 1979·27 cites·6 claims
- 1869US4148850ASupporting structure for large natural draft cooling towerBALCKE DUERR AG·Filed 1978·Granted Apr 10, 1979·29 cites·14 claims
- 1968US4651809ARegenerative heat exchangerBALCKE DUERR AG·Filed 1985·Granted Mar 24, 1987·34 cites·1 claims
- 2067US4055063AApparatus for the expansion of tube ends inside of a tube plateBALCKE DUERR AG·Filed 1977·Granted Oct 25, 1977·15 cites·4 claims
- 2165US4514344AApparatus for the mixing of different streams of air in a cooling towerBALCKE DUERR AG·Filed 1984·Granted Apr 30, 1985·23 cites·6 claims
- 2264US4690207ANatural-draft cooling tower with forced-draft flow over reflux condensersBALCKE DUERR AG·Filed 1985·Granted Sep 1, 1987·25 cites·2 claims
- 2362US5458465AFan impellerBALCKE DUERR AG·Filed 1994·Granted Oct 17, 1995·31 cites·8 claims
- 2461US4545263AGearboxBALCKE DUERR AG·Filed 1983·Granted Oct 8, 1985·16 cites·15 claims
- 2561US4521158AFluid-flow machineBALCKE DUERR AG·Filed 1983·Granted Jun 4, 1985·19 cites·18 claims
- 2660US4550570AForced-air cooled condenser systemBALCKE DUERR AG·Filed 1984·Granted Nov 5, 1985·18 cites·6 claims
- 2758US5167879AOpen-surface componentBALCKE DUERR AG·Filed 1992·Granted Dec 1, 1992·24 cites·6 claims
- 2857US4194381ADevice for the cold working of heat exchanger tubing for the attachment of spiral finsBALCKE DUERR AG·Filed 1978·Granted Mar 25, 1980·12 cites·7 claims
- 2956US4667539APlanetary gear driveBALCKE DUERR AG·Filed 1984·Granted May 26, 1987·13 cites·18 claims
- 3055US5271459AHeat exchanger comprised of individual plates for counterflow and parallel flowBALCKE DUERR AG·Filed 1992·Granted Dec 21, 1993·27 cites·4 claims
- 3155US4103408AMethod for the cold working of heat exchanger tubing for the attachment of spiral finsBALCKE DUERR AG·Filed 1976·Granted Aug 1, 1978·8 cites·6 claims
- 3254US4123994AApparatus for suspension of a tube wallBALCKE DUERR AG·Filed 1977·Granted Nov 7, 1978·14 cites·4 claims
- 3351US3982765APiston pumpBALCKE DUERR AG·Filed 1975·Granted Sep 28, 1976·12 cites·7 claims
- 3450US5560209AArrangement for improving efficiency of a power plantBALCKE DUERR AG·Filed 1994·Granted Oct 1, 1996·18 cites·7 claims
- 3549US5595063ADevice and method for degassing make-up water for a steam turbine processBALCKE DUERR AG·Filed 1994·Granted Jan 21, 1997·14 cites·9 claims
- 3647US5871045AHeat exchangerBALCKE DUERR AG·Filed 1996·Granted Feb 16, 1999·22 cites·5 claims
- 3747US5301747AHeat exchanger comprised of individual platesBALCKE DUERR AG·Filed 1992·Granted Apr 12, 1994·24 cites·25 claims
- 3847US5007165AMethod of producing a cam shaftBALCKE DUERR AG·Filed 1990·Granted Apr 16, 1991·13 cites·2 claims
- 3946US5225116AContact body for cooling towersBALCKE DUERR AG·Filed 1992·Granted Jul 6, 1993·19 cites·11 claims
- 4045US5301746ANatural draft cooling towerBALCKE DUERR AG·Filed 1993·Granted Apr 12, 1994·15 cites·8 claims
- 4144US4727635AMethod of securing tubes between tube sheetsBALCKE DUERR AG·Filed 1987·Granted Mar 1, 1988·9 cites·3 claims
- 4244US4434682APlanetary gearBALCKE DUERR AG·Filed 1981·Granted Mar 6, 1984·8 cites·14 claims
- 4344US4107832AMethod for winding spiral fins onto oval tubingBALCKE DUERR AG·Filed 1975·Granted Aug 22, 1978·5 cites·6 claims
- 4443US5282313AMethod for producing heat exchange elements and heat exchange elements produced therebyBALCKE DUERR AG·Filed 1992·Granted Feb 1, 1994·11 cites·4 claims
- 4543US5234672AMethod and apparatus for increasing the separating capacity of a flue gas desulfurization apparatusBALCKE DUERR AG·Filed 1992·Granted Aug 10, 1993·20 cites·2 claims
- 4638US3999900APump with disk-shaped piston for liquid or gaseous fluidsBALCKE DUERR AG·Filed 1974·Granted Dec 28, 1976·8 cites·6 claims
- 4736US4328176AApparatus for damping the noise in cooling towersBALCKE DUERR AG·Filed 1980·Granted May 4, 1982·10 cites·21 claims
- 4835US5097582AApparatus for the exact positioning and fastening of several parts onto a hollow bodyBALCKE DUERR AG·Filed 1990·Granted Mar 24, 1992·6 cites·13 claims
- 4934US5661906AMethod of welding comb-shaped sealing strips to plate heat exchangersBALCKE DUERR AG·Filed 1995·Granted Sep 2, 1997·9 cites·3 claims
- 5034US4705057ACleaning device for regenerative heat exchangersBALCKE DUERR AG·Filed 1985·Granted Nov 10, 1987·9 cites·6 claims
Showing the top 50 of 62 patent records by PatentIndex Score.
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