CH708912B1 - Fluidaustauscheinrichtungen und damit zusammenhängende Verfahren. - Google Patents
Fluidaustauscheinrichtungen und damit zusammenhängende Verfahren. Download PDFInfo
- Publication number
- CH708912B1 CH708912B1 CH00441/15A CH4412015A CH708912B1 CH 708912 B1 CH708912 B1 CH 708912B1 CH 00441/15 A CH00441/15 A CH 00441/15A CH 4412015 A CH4412015 A CH 4412015A CH 708912 B1 CH708912 B1 CH 708912B1
- Authority
- CH
- Switzerland
- Prior art keywords
- valve
- housing
- pressure
- port
- openings
- Prior art date
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 144
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000008569 process Effects 0.000 title description 12
- 238000004891 communication Methods 0.000 claims abstract description 18
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 17
- 238000012546 transfer Methods 0.000 claims description 5
- 238000001223 reverse osmosis Methods 0.000 claims description 4
- 239000012267 brine Substances 0.000 description 14
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 14
- 239000007788 liquid Substances 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 5
- 239000012528 membrane Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910001092 metal group alloy Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 229920001169 thermoplastic Polymers 0.000 description 4
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F13/00—Pressure exchangers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/06—Energy recovery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/10—Accessories; Auxiliary operations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
- Y10T137/0396—Involving pressure control
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/86638—Rotary valve
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Multiple-Way Valves (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/587,722 US9435354B2 (en) | 2012-08-16 | 2012-08-16 | Fluid exchanger devices, pressure exchangers, and related methods |
| PCT/US2013/055467 WO2014028905A1 (en) | 2012-08-16 | 2013-08-16 | Fluid exchange devices, pressure exchangers, and related methods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH708912B1 true CH708912B1 (de) | 2016-09-15 |
Family
ID=50099199
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH00441/15A CH708912B1 (de) | 2012-08-16 | 2013-08-16 | Fluidaustauscheinrichtungen und damit zusammenhängende Verfahren. |
| CH00482/15A CH710799B1 (de) | 2012-08-16 | 2013-08-16 | Fluidaustauscheinrichtungen und damit zusammenhängende Verfahren. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH00482/15A CH710799B1 (de) | 2012-08-16 | 2013-08-16 | Fluidaustauscheinrichtungen und damit zusammenhängende Verfahren. |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US9435354B2 (enExample) |
| CN (1) | CN104704274B (enExample) |
| AU (1) | AU2013302386B2 (enExample) |
| CH (2) | CH708912B1 (enExample) |
| IN (1) | IN2015KN00622A (enExample) |
| WO (1) | WO2014028905A1 (enExample) |
Families Citing this family (41)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9435354B2 (en) * | 2012-08-16 | 2016-09-06 | Flowserve Management Company | Fluid exchanger devices, pressure exchangers, and related methods |
| EP2837824B1 (en) * | 2013-08-15 | 2015-12-30 | Danfoss A/S | Hydraulic machine, in particular hydraulic pressure exchanger |
| EP2837825B1 (en) * | 2013-08-15 | 2016-02-10 | Danfoss A/S | Hydraulic machine, in particular hydraulic pressure exchanger |
| EP2837823B1 (en) * | 2013-08-15 | 2017-04-26 | Danfoss A/S | Hydraulic machine, in particular hydraulic pressure exchanger |
| US9759066B2 (en) | 2014-04-21 | 2017-09-12 | Amorphic Tech Ltd | Unitary pump and turbine energy exchanger |
| US11047398B2 (en) | 2014-08-05 | 2021-06-29 | Energy Recovery, Inc. | Systems and methods for repairing fluid handling equipment |
| EP3177836A1 (en) * | 2014-08-05 | 2017-06-14 | Energy Recovery, Inc. | Pressure exchanger system with integral pressure balancing system |
| WO2016115003A1 (en) * | 2015-01-12 | 2016-07-21 | Schlumberger Canada Limited | Fluid energizing device |
| US9920774B2 (en) | 2015-08-21 | 2018-03-20 | Energy Recovery, Inc. | Pressure exchange system with motor system and pressure compensation system |
| USD851221S1 (en) * | 2015-11-18 | 2019-06-11 | Vista Water Group, Llc | Plumbing fitting |
| WO2017132426A2 (en) * | 2016-01-27 | 2017-08-03 | Schlumberger Technology Corporation | Modular configurable wellsite surface equipment |
| WO2017176268A1 (en) * | 2016-04-07 | 2017-10-12 | Halliburton Energy Services, Inc. | Pressure-exchanger to achieve rapid changes in proppant concentration |
| WO2018085740A2 (en) * | 2016-11-04 | 2018-05-11 | Schlumberger Technology Corporation | Pressure exchanger with pressure ratio |
| US10975677B2 (en) | 2016-11-04 | 2021-04-13 | Schlumberger Technology Corporation | Pressure exchanger low pressure flow control |
| WO2018085743A1 (en) | 2016-11-04 | 2018-05-11 | Schlumberger Technology Corporation | Split stream operations with pressure exchangers |
| US11157025B2 (en) | 2016-11-04 | 2021-10-26 | Schlumberger Technology Corporation | Pressure exchanger manifold resonance reduction |
| WO2018085741A1 (en) | 2016-11-04 | 2018-05-11 | Schlumberger Technology Corporation | Pressure exchanger pressure oscillation source |
| WO2018085745A1 (en) | 2016-11-04 | 2018-05-11 | Schlumberger Technology Corporation | Pressure exchanger wear prevention |
| WO2020097557A1 (en) | 2018-11-09 | 2020-05-14 | Flowserve Management Company | Fluid exchange devices and related controls, systems, and methods |
| AU2019376162B2 (en) | 2018-11-09 | 2025-07-10 | Flowserve Pte. Ltd. | Fluid exchange devices and related controls, systems, and methods |
| US11286958B2 (en) | 2018-11-09 | 2022-03-29 | Flowserve Management Company | Pistons for use in fluid exchange devices and related devices, systems, and methods |
| MX2021005195A (es) | 2018-11-09 | 2021-07-15 | Flowserve Man Co | Dispositivos de intercambio de fluidos y controles, sistemas y metodos relacionados. |
| WO2020097541A1 (en) | 2018-11-09 | 2020-05-14 | Flowserve Management Company | Methods and valves including flushing features. |
| US12092136B2 (en) | 2018-11-09 | 2024-09-17 | Flowserve Pte. Ltd. | Fluid exchange devices and related controls, systems, and methods |
| AU2019376012B2 (en) | 2018-11-09 | 2025-05-15 | Flowserve Pte. Ltd. | Fluid exchange devices and related systems, and methods |
| US12179150B2 (en) * | 2019-03-26 | 2024-12-31 | Mohamed Abdelwahab Wahby Swidan | Pressure exchanger unit for saving energy in desalination plants |
| US10933375B1 (en) | 2019-08-30 | 2021-03-02 | Fluid Equipment Development Company, Llc | Fluid to fluid pressurizer and method of operating the same |
| AU2020401951B2 (en) | 2019-12-12 | 2026-04-09 | Flowserve Pte. Ltd. | Fluid exchange devices and related controls, systems, and methods |
| US11397030B2 (en) * | 2020-07-10 | 2022-07-26 | Energy Recovery, Inc. | Low energy consumption refrigeration system with a rotary pressure exchanger replacing the bulk flow compressor and the high pressure expansion valve |
| US11421918B2 (en) | 2020-07-10 | 2022-08-23 | Energy Recovery, Inc. | Refrigeration system with high speed rotary pressure exchanger |
| ES2944561T3 (es) * | 2021-01-28 | 2023-06-22 | Danfoss Power Solutions Aps | Intercambiador de presión |
| US11555509B2 (en) | 2021-03-02 | 2023-01-17 | Energy Recovery, Inc. | Motorized pressure exchanger with a low-pressure centerbore |
| US11692743B2 (en) | 2021-06-09 | 2023-07-04 | Energy Recovery, Inc. | Control of refrigeration and heat pump systems that include pressure exchangers |
| US12209778B2 (en) | 2021-06-09 | 2025-01-28 | Energy Recovery, Inc. | Refrigeration and heat pump systems with pressure exchangers |
| CN113418030B (zh) * | 2021-06-23 | 2022-06-10 | 山东科技大学 | 一种大容量液体定比多次批混水阀 |
| CN113700685B (zh) * | 2021-08-11 | 2022-07-26 | 大连理工大学 | 一种弯曲变截面流道型轴流式气波引射器 |
| EP4500026A1 (en) * | 2022-03-24 | 2025-02-05 | Energy Recovery, Inc. | Pressure exchanger flow adapter |
| US12704134B2 (en) | 2022-03-24 | 2026-08-11 | Energy Recovery, Inc. | Minimizing mixing in a pressure exchanger |
| US12410821B2 (en) | 2022-03-24 | 2025-09-09 | Energy Recovery, Inc. | Reducing cavitation, noise, and vibration in a pressure exchanger |
| US12704069B2 (en) | 2022-06-17 | 2026-08-11 | Amorphic Tech Ltd. | Sliding vane pump or turbine having track followers |
| EP4342573A1 (en) * | 2022-09-23 | 2024-03-27 | Danfoss A/S | System for reverse osmosis |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2526618A (en) * | 1946-07-29 | 1950-10-24 | Bbc Brown Boveri & Cie | Pressure exchange apparatus |
| GB936427A (en) * | 1961-05-02 | 1963-09-11 | Power Jets Res & Dev Ltd | Improvements in or relating to pressure exchangers |
| GB993288A (en) * | 1962-11-15 | 1965-05-26 | Dudley Brian Spalding | Improvements in and relating to pressure exchangers |
| CH406739A (de) * | 1963-08-14 | 1966-01-31 | Bbc Brown Boveri & Cie | Druckwellenmaschine |
| US3489159A (en) | 1965-08-18 | 1970-01-13 | Cheng Chen Yen | Method and apparatus for pressurizing and depressurizing of fluids |
| US4352638A (en) * | 1979-11-05 | 1982-10-05 | Ford Motor Company | Rotor assembly for wave compression supercharger |
| US4360316A (en) * | 1980-07-07 | 1982-11-23 | Ford Motor Company | Two cycle per revolution wave compression supercharger |
| US4360317A (en) * | 1980-08-01 | 1982-11-23 | Ford Motor Company | Three cycle per revolution wave compression supercharger |
| WO1988005133A1 (en) | 1987-01-05 | 1988-07-14 | Hauge Leif J | Pressure exchanger for liquids |
| US5178521A (en) * | 1991-04-23 | 1993-01-12 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Swash plate type compressor with a central discharge passage |
| US5306428A (en) | 1992-10-29 | 1994-04-26 | Tonner John B | Method of recovering energy from reverse osmosis waste streams |
| US5797429A (en) | 1996-03-11 | 1998-08-25 | Desalco, Ltd. | Linear spool valve device for work exchanger system |
| US5725758A (en) * | 1996-08-22 | 1998-03-10 | Water Refining Inc. | Filtration system and assembly |
| AU744621B2 (en) * | 1997-08-29 | 2002-02-28 | Swissauto Engineering S.A. | Gas-dynamic pressure wave machine |
| NO312563B1 (no) * | 2000-04-11 | 2002-05-27 | Energy Recovery Inc | Fremgangsmate for reduksjon av stoy og kavitasjon i en trykkveksler som oker eller reduserer trykket pa fluider ved fortrengningsprinsippet, og en sadan trykkveksler |
| US6537035B2 (en) * | 2001-04-10 | 2003-03-25 | Scott Shumway | Pressure exchange apparatus |
| US6773226B2 (en) * | 2002-09-17 | 2004-08-10 | Osamah Mohamed Al-Hawaj | Rotary work exchanger and method |
| DE102004002547A1 (de) * | 2003-03-12 | 2004-09-23 | Ksb Aktiengesellschaft | Armatur |
| ES2278304T3 (es) | 2003-03-12 | 2007-08-01 | Ksb Aktiengesellschaft | Dispositivo de valvula para instalaciones dotadas de convertidores de presion. |
| AU2004247958B2 (en) | 2003-06-12 | 2010-01-07 | I.D.E. Technologies Ltd. | Three-way poppet valve for work exchanger |
| CA2553865A1 (en) * | 2004-01-30 | 2005-08-18 | Ljc Technologies, L.L.C. | Molecular separator |
| DE102004038439A1 (de) * | 2004-08-07 | 2006-03-16 | Ksb Aktiengesellschaft | Kanalform für rotierenden Druckaustauscher |
| BRPI0513789A (pt) * | 2004-08-10 | 2008-05-13 | Leif Hauge | trocador de pressão |
| US7207781B2 (en) * | 2004-08-20 | 2007-04-24 | Scott Shumway | Pressure exchange apparatus with dynamic sealing mechanism |
| US7214315B2 (en) * | 2004-08-20 | 2007-05-08 | Scott Shumway | Pressure exchange apparatus with integral pump |
| US7201557B2 (en) * | 2005-05-02 | 2007-04-10 | Energy Recovery, Inc. | Rotary pressure exchanger |
| GB0523265D0 (en) * | 2005-11-15 | 2005-12-21 | Andrews William T | Pressure exchanger |
| US7988428B1 (en) * | 2006-09-21 | 2011-08-02 | Macharg John P | Axial piston machine |
| BRPI0715302A2 (pt) * | 2006-10-04 | 2013-06-11 | Energy Recovery Inc | dispositivo de transferÊncia de pressço e mÉtodo para a transferÊncia da energia de pressço a partir de um primeiro fluido de alta pressço para um segundo fluido de menor pressço |
| US8622714B2 (en) * | 2006-11-14 | 2014-01-07 | Flowserve Holdings, Inc. | Pressure exchanger |
| CN100450591C (zh) * | 2007-01-04 | 2009-01-14 | 天津大学 | 海水或苦咸水反渗透淡化系统用双转盘耦合式压力交换器 |
| AU2008308441A1 (en) * | 2007-10-05 | 2009-04-09 | Energy Recovery, Inc. | Rotary pressure transfer device with improved flow |
| CA2781473A1 (en) * | 2009-11-24 | 2011-06-03 | Ghd Pty Ltd | Pressure exchanger |
| US9435354B2 (en) * | 2012-08-16 | 2016-09-06 | Flowserve Management Company | Fluid exchanger devices, pressure exchangers, and related methods |
-
2012
- 2012-08-16 US US13/587,722 patent/US9435354B2/en active Active
-
2013
- 2013-08-16 CH CH00441/15A patent/CH708912B1/de unknown
- 2013-08-16 IN IN622KON2015 patent/IN2015KN00622A/en unknown
- 2013-08-16 AU AU2013302386A patent/AU2013302386B2/en active Active
- 2013-08-16 CN CN201380054171.6A patent/CN104704274B/zh active Active
- 2013-08-16 CH CH00482/15A patent/CH710799B1/de unknown
- 2013-08-16 WO PCT/US2013/055467 patent/WO2014028905A1/en not_active Ceased
-
2016
- 2016-09-06 US US15/257,591 patent/US10309426B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| AU2013302386A1 (en) | 2015-04-02 |
| IN2015KN00622A (enExample) | 2015-07-17 |
| AU2013302386B2 (en) | 2016-06-09 |
| US20140048143A1 (en) | 2014-02-20 |
| US10309426B2 (en) | 2019-06-04 |
| CH710799B1 (de) | 2016-08-31 |
| US20160377096A1 (en) | 2016-12-29 |
| WO2014028905A1 (en) | 2014-02-20 |
| CN104704274B (zh) | 2017-11-07 |
| US9435354B2 (en) | 2016-09-06 |
| CN104704274A (zh) | 2015-06-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCAR | Change of the address of the representative |
Free format text: NEW ADDRESS: BELLERIVESTRASSE 203 POSTFACH, 8034 ZUERICH (CH) |