| Patents for F22B 21 - Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically (973) |
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| 07/04/1990 | EP0376259A2 Low NOx boiler |
| 06/28/1990 | WO1990007084A1 Square multi-pipe once-through boiler |
| 05/08/1990 | US4923969 Preparation of 99m Tc radiopharmaceuticals |
| 05/01/1990 | CA1268384A1 Air preheater for a compact boiler |
| 03/27/1990 | US4910848 Method of assembling a boiler unit having pre-assembled walls |
| 02/28/1990 | CN1007006B Seymented combustion boiling boiler and its combustion method |
| 02/27/1990 | US4903641 Method and apparatus for extracting saturated steam in the synthesis of hydrogen chloride gas |
| 02/20/1990 | US4901677 Finned-tube heat exchanger with liquid-cooled baffle |
| 02/13/1990 | CA1265713A1 Water tube boiler |
| 11/14/1989 | US4879959 Swirl combustion apparatus |
| 07/26/1989 | CN1034256A 立式锅炉 Vertical boiler |
| 07/25/1989 | US4851515 Nitridotetrahalotechnetium compounds from pertechnetate, azide, hydrohalic acid |
| 07/19/1989 | EP0207106B1 Incident and/or translucent light microscope |
| 06/28/1989 | CN2040216U Small water-pipe steam and water boiler |
| 06/28/1989 | CN2040215U Combined coal-burning water-pipe boiler |
| 05/24/1989 | CN2038194U Vertical chimney boiler with double fire grate |
| 05/18/1989 | WO1989004438A1 Swirl combustion apparatus |
| 05/02/1989 | US4825813 Multi-pipe once-through type boiler |
| 04/12/1989 | CN1032393A Tunnel type waste heat boiler |
| 03/29/1989 | CN1032071A Segmented combustion boiling boiler and its combustion method |
| 03/01/1989 | CN1031412A Internally cyclic spiral-flow burning boiler with fluidized bed |
| 01/03/1989 | CA1248083A1 Heat exchanger system |
| 12/28/1988 | EP0296357A1 Steam generator for a nuclear pressurized water reactor |
| 11/15/1988 | US4784481 Transmitted and/or incident light microscope |
| 09/20/1988 | US4771738 Dual sleeve boiler mounting apparatus |
| 08/23/1988 | CA1240890A1 Steam generators and combined cycle power plants employing the same |
| 08/03/1988 | EP0139000B1 Once through boiler |
| 08/02/1988 | CA1239842A1 Tube-type heat exchanger |
| 07/21/1988 | DE3700225A1 Arrangement for supporting heating-surface bundles (made of pipe panels) |
| 07/06/1988 | CN86108937A Rotary vertical grate boiler and feeding system |
| 06/28/1988 | CA1238539A1 Boiler construction |
| 06/07/1988 | CA1237573A1 Combined sulphur burning furnace and boiler |
| 05/03/1988 | US4741291 Water tube steam generator |
| 01/27/1988 | EP0254379A1 Boilers systems |
| 01/26/1988 | US4721067 Device for injecting a liquid into a tube and steam generator comprising this device |
| 01/13/1988 | CN86103653A Hot water heater and steam generator |
| 12/09/1987 | CN86103706A Slow fire boiler |
| 12/02/1987 | EP0247256A1 Combined sulphur burning furnace and boiler |
| 11/04/1987 | CN87202117U Low temperature and low pressure vertical boiler |
| 10/20/1987 | US4700772 Heat exchanger system |
| 08/19/1987 | EP0233030A2 Advanced heater |
| 08/10/1987 | EP0197049A4 Air preheater for a compact boiler. |
| 07/22/1987 | EP0128198B1 Combustion product condensing water heater |
| 05/26/1987 | US4667613 Horizontal industrial boiler system with improved ash removal means |
| 05/19/1987 | US4665894 Gas-heated or kerosene-heated boiler for warm water, hot water or steam generation |
| 04/21/1987 | US4658762 Advanced heater |
| 03/03/1987 | US4646820 Apparatus for producing a heating fluid |
| 01/27/1987 | US4638857 Vertical tube heat exchanger panel for waste-recovery boilers such as black liquid boilers or household waste incinerator furnaces, and methods of manufacture |
| 01/07/1987 | EP0207106A1 Incident and/or translucent light microscope. |
| 12/31/1986 | CN86203333U Vertical water tube boiler with single cauldron |
| 12/30/1986 | CA1215968A1 Heat-exchanger system, more particularly for a process gas |
| 12/17/1986 | EP0205194A2 Combined cycle power plant |
| 12/09/1986 | US4627386 Steam generators and combined cycle power plants employing the same |
| 12/09/1986 | CA1214968A1 Gas-heated or kerosene-heated boiler for warm water, hot water or steam generation |
| 12/03/1986 | EP0203568A2 Hot water heater and steam generator |
| 12/03/1986 | EP0203104A1 Boiler having improved heat absorption |
| 11/18/1986 | US4622921 Combined sulphur burning furnace and boiler |
| 11/18/1986 | CA1214084A1 Combustion product condensing water heater |
| 11/11/1986 | US4621592 Boiler having improved heat absorption |
| 10/21/1986 | US4617870 Method of accelerating radiative transfer |
| 10/15/1986 | EP0197049A1 Air preheater for a compact boiler |
| 09/23/1986 | US4612879 Hot water heater and steam generator |
| 09/16/1986 | US4611655 Heat exchanger |
| 07/29/1986 | CA1208507A1 Vertical radiation tank |
| 07/22/1986 | CA1208086A1 Single drum all-welded boiler |
| 07/03/1986 | WO1986003847A1 Incident and/or translucent light microscope |
| 06/05/1986 | WO1986003278A1 Boiler having improved heat absorption |
| 04/10/1986 | WO1986002140A1 Air preheater for a compact boiler |
| 01/29/1986 | EP0169256A1 Water tube boiler |
| 01/14/1986 | CA1199239A1 Steam generator |
| 01/08/1986 | EP0166989A1 Vertical tube heat exchange panel for recovery boilers, such as black liquor boilers or town refuse incinerators, and manufacturing processes |
| 01/08/1986 | EP0166805A2 Heat transfer system |
| 12/31/1985 | US4561256 External combustion engine |
| 12/27/1985 | EP0165846A1 Liquid injection device in a tube and steam generator having such a device |
| 12/04/1985 | EP0163594A2 Method of accelerating radiative transfer |
| 11/19/1985 | US4553502 Tube-type heat exchanger |
| 11/12/1985 | US4552292 Heat exchanger |
| 08/28/1985 | EP0153214A1 Pipe heat exchanger |
| 07/18/1985 | WO1985003063A1 PREPARATION OF 99mTC RADIOPHARMACEUTICALS |
| 06/05/1985 | EP0143672A2 External combustion engine |
| 05/02/1985 | EP0139000A1 Once through boiler. |
| 04/30/1985 | US4513694 Vertical radiation tank |
| 03/05/1985 | US4502626 Combustion product condensing water heater |
| 02/19/1985 | CA1182698A1 Boiler |
| 01/22/1985 | US4494485 Fired heater |
| 01/22/1985 | US4494484 Heat exchanger for a process gas |
| 12/19/1984 | EP0128198A1 Combustion product condensing water heater. |
| 10/25/1984 | WO1984004149A1 Steam generators and combined cycle power plants employing the same |
| 08/14/1984 | US4465025 Steam generator |
| 07/03/1984 | CA1170173A1 Downhole steam generator using low pressure fuel and air supply |
| 06/27/1984 | EP0111615A1 Heat transfer system, especially for a process gas |
| 06/21/1984 | WO1984002387A1 Combustion product condensing water heater |
| 06/12/1984 | US4453498 Gas- or oil-burning warm water, hot water or steam boiler |
| 06/12/1984 | US4453496 Multitubular once-through boiler |
| 06/05/1984 | CA1168527A1 Synthesis gas cooler and waste heat boiler |
| 05/22/1984 | US4449485 Separable combination boiler |
| 05/02/1984 | EP0107527A1 Device of the boiler-type using a solid-liquid suspension of the coal-water-type as fuel |
| 04/17/1984 | US4442800 For a furnace |
| 04/17/1984 | US4442799 Heat exchanger |
| 02/02/1984 | WO1984000411A1 Vertical radiation tank |