DE20121634U1 - Multiple chamber plant used for degassing, coating or etching substrates comprises an evacuating system connected to chambers - Google Patents
Multiple chamber plant used for degassing, coating or etching substrates comprises an evacuating system connected to chambersInfo
- Publication number
- DE20121634U1 DE20121634U1 DE20121634U DE20121634U DE20121634U1 DE 20121634 U1 DE20121634 U1 DE 20121634U1 DE 20121634 U DE20121634 U DE 20121634U DE 20121634 U DE20121634 U DE 20121634U DE 20121634 U1 DE20121634 U1 DE 20121634U1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- vacuum pump
- chambers
- stages
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000758 substrate Substances 0.000 title description 3
- 239000011248 coating agent Substances 0.000 title description 2
- 238000000576 coating method Methods 0.000 title description 2
- 238000007872 degassing Methods 0.000 title description 2
- 238000005530 etching Methods 0.000 title description 2
- 238000000034 method Methods 0.000 claims description 11
- 238000005086 pumping Methods 0.000 claims 1
- 230000001914 calming effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/4412—Details relating to the exhausts, e.g. pumps, filters, scrubbers, particle traps
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/56—Apparatus specially adapted for continuous coating; Arrangements for maintaining the vacuum, e.g. vacuum locks
- C23C14/568—Transferring the substrates through a series of coating stations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/005—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of dissimilar working principle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2220/00—Application
- F04C2220/10—Vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Non-Positive Displacement Air Blowers (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
Mehrkairaneranlage zur Behandlung von Gegenständen unter Vakuum und Evakuierungssystem dafürMulti-chamber system for treating objects under vacuum and evacuation system therefor
Die Erfindung betrifft eine Mehrkairaneranlage zur Behandlung von Gegenständen unter Vakuum mit einem an die Kammern angeschlossenen Evakuierungssystem. Außerdem bezieht sich die Erfindung auf ein Evakuierungssystem dafür.The invention relates to a multi-chamber system for treating objects under vacuum with an evacuation system connected to the chambers. The invention also relates to an evacuation system therefor.
Mehrkammeranlagen der genannten Art sind bekannt. Sie dienen dem Entgasen, Beschichten (z.B. Metallisieren) oder Ätzen von Substraten. Bekannte Verfahren dieser Art sind CVD- oder DVD-Prozesse. Üblicherweise besitzt eine solche Anlage eine Prozesskammer, der eine oder mehrere Vorkammern mit Schleusenfunktion vorgelagert ist. Die Schleusen werden für die Zeit des Ein- oder Ausführens von Substraten geöffnet, so dass hohe und von Kammer zu Kammer unterschiedliche Druckschwankungen auftreten.Multi-chamber systems of the type mentioned are well known. They are used for degassing, coating (e.g. metallizing) or etching substrates. Well-known processes of this type are CVD or DVD processes. Such a system usually has a process chamber, upstream of which is one or more pre-chambers with a lock function. The locks are opened for the time when substrates are being introduced or removed, so that high pressure fluctuations occur that vary from chamber to chamber.
Bei einer mit zwei Kammern ausgerüsteten Mehrkammeranlage ist es bekannt, zwei separate Vakuumpumpen einzusetzen, um jede der Kammern nach dem Schließen zugehöriger Schleusen möglichst schnell evakuieren zu können,In a multi-chamber system equipped with two chambers, it is known to use two separate vacuum pumps in order to be able to evacuate each of the chambers as quickly as possible after closing the associated locks.
Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, bei Mehrkammeranlagen der eingangs genannten oder ähnlichen Art den Aufwand für das Evakuierungssystem zu reduzieren.The present invention is based on the object of reducing the effort for the evacuation system in multi-chamber systems of the type mentioned above or similar.
Erfindungsgemäß wird diese Aufgabe durch die kennzeichnenden Merkmale der Patentansprüche gelöst.According to the invention, this object is achieved by the characterizing features of the patent claims.
Dadurch, dass jede der Stufen mit einem Einlass ausgerüstet ist und dass jeder der Einlasse an eine der Kammern angeschlossen ist, ist nur noch eine Vakuumpumpe erforderlich, um die gewünschten Drücke - seien es etwa gleiche oder auch unterschiedliche - in den verschiedenen Kammern möglichst schnell erzeugen und aufrecht erhalten zu können. Mehrere Pumpen mit jeweils einem Antriebsmotor sind nicht mehr erforderlich. Auch der Montageaufwand - sowohl mechanisch als auch elektrisch ist reduziert. Vorzugsweise werden die Pumpstufen parallel betrieben, so dass sie die Funktion von zwei unabhängigen Vakuumpumpen haben.Because each of the stages is equipped with an inlet and each of the inlets is connected to one of the chambers, only one vacuum pump is required to generate and maintain the desired pressures - whether the same or different - in the various chambers as quickly as possible. Multiple pumps, each with a drive motor, are no longer required. The assembly effort - both mechanical and electrical - is also reduced. The pump stages are preferably operated in parallel so that they function like two independent vacuum pumps.
Typische Vorvakuumpumpen sind ölgedichtete Drehschiebervakuumpumpen, wie sie beispielsweise aus der DE-U-90 07 544 bekannt sind.Typical backing pumps are oil-sealed rotary vane vacuum pumps, as known for example from DE-U-90 07 544.
Weitere Vorteile und Einzelheiten der Erfindung sollen an Hand von in den Figuren 1 bis 4 schematisch dargestellten Ausführungsbeispielen erläutert werden.Further advantages and details of the invention will be explained with reference to embodiments shown schematically in Figures 1 to 4.
Es zeigenShow it
01.16 01.16
Figur 1 eine Mehrkainmeranlage mit drei Kammern und einer dreistufigen Vorvakuumpumpe,Figure 1 a multi-chamber system with three chambers and a three-stage backing pump,
Figur 2 eine Mehrkammeranlage mit zwei Vakuumkammern und einer zweistufigen Vorvakuumpumpe,Figure 2 a multi-chamber system with two vacuum chambers and a two-stage pre-vacuum pump,
Figur 3 eine Mehrkammeranlage nach Figur 2 mit einer zusätzlichen Hochvakuumpumpe undFigure 3 a multi-chamber system according to Figure 2 with an additional high vacuum pump and
Figur 4 einen Schnitt durch eine zweistufige Vorvakuumpumpe .Figure 4 shows a section through a two-stage backing pump.
In den Figuren sind die Mehrkammeranlage allgemein mitIn the figures, the multi-chamber system is generally
1, die Kammern mit 2, 3 und 4 und das Evakuierungssystem mit 5 bezeichnet. Bei den Kammern 2 bis 4 handelt es sich jeweils um eine Prozesskammer 2, der weitere Kammern 3, 4 (Figur 1) bzw. nur 4 (Figuren 2, 3) zugeordnet sind, die z. B. die Funktion von Schleusen haben können. Schlitzschleusen sind schematisch dargestellt und mit 6, 7 und 8 bezeichnet. Das Evakuierungssystem ist als mehrstufige Vorvakuumpumpe ausgebildet.1, the chambers with 2, 3 and 4 and the evacuation system with 5. Chambers 2 to 4 are each a process chamber 2, to which further chambers 3, 4 (Figure 1) or only 4 (Figures 2, 3) are assigned, which can have the function of locks, for example. Slot locks are shown schematically and designated 6, 7 and 8. The evacuation system is designed as a multi-stage pre-vacuum pump.
Beim Ausführungsbeispiel nach Figur 1 sind drei KammernIn the embodiment shown in Figure 1, three chambers
2, 3, 4 vorhanden. Dem entsprechend besitzt die Vorvakuumpumpe 5 drei Stufen 11, 12, 13 mit jeweils einem Einlass 14, 15 bzw. 16. Jeder der Einlasse 14, 15, 16 ist über je eine Verbindungsleitung 17, 18 bzw. 19 an eine der Kammern 2, 3, 4 angeschlossen. Die Austritte 20, 21, 22 der Pumpstufen 11, 12, 13 münden innerhalb der Pumpe 5 in eine gemeinsame Auslassleitung, so dass die Pumpe 5 nur einen Auslass 23 besitzt. Haben die Pumpstufen 11, 12, 13 unterschiedliche Saugvermögen,2, 3, 4 are present. Accordingly, the backing pump 5 has three stages 11, 12, 13, each with an inlet 14, 15 or 16. Each of the inlets 14, 15, 16 is connected to one of the chambers 2, 3, 4 via a connecting line 17, 18 or 19. The outlets 20, 21, 22 of the pump stages 11, 12, 13 open into a common outlet line within the pump 5, so that the pump 5 has only one outlet 23. If the pump stages 11, 12, 13 have different suction capacities,
G 01.16 .. . G 01.16 .. .
dann ist es zweckmäßig, die Stufe mit dem größten Saugvermögen an die Prozesskammer 2 anzuschließen, damit dort möglichst schnell ausreichend niedrige Drücke erreicht werden können.then it is advisable to connect the stage with the highest suction capacity to process chamber 2 so that sufficiently low pressures can be achieved there as quickly as possible.
Bei der Ausführung nach Figur 2 sind nur zwei Kammern 2, 4 und dem entsprechend zwei Pumpstufen 11, 13 vorgesehen. In den Verbindungsleitungen 17 und 19 befinden sich Ventile 24 und 25, um eine oder beide Kammern 2, 4 im Falle ihrer Belüftung vom Evakuierungssystem 5 trennen zu können.In the embodiment according to Figure 2, only two chambers 2, 4 and correspondingly two pump stages 11, 13 are provided. Valves 24 and 25 are located in the connecting lines 17 and 19 in order to be able to separate one or both chambers 2, 4 from the evacuation system 5 in the event of their ventilation.
Bei der Ausführung nach Figur 3 befinden sich in der Verbindungsleitung 17 eine Turbomolekularvakuumpumpe 2 6 und - druckseitig davon - ein Ventil 27. Hochvakuumpumpen dieser Art zeichnen sich durch höhere Saugleistungen und niedrigere Enddrücke im Vergleich zu Vorvakuumpumpen aus, benötigen jedoch eine Vorvakuumpumpe, die im dargestellten Fall die Pumpstufe 11 bildet. Diese Ausführung ist für in der Prozesskammer 2 ablaufende Verfahren zweckmäßig, bei denen möglichst schnell relativ niedrige Drücke (z. B. 10~2 mbar) erreicht werden sollen. Vorvakuumpumpen erreichen zwar auch Enddrücke von etwa 1 mbar bis 5.10"2 mbar; durch den Einsatz der Hochvakuumpumpen können jedoch wesentlich schneller noch tieferer Drücke erreicht werden.In the embodiment according to Figure 3, a turbomolecular vacuum pump 26 and - on the pressure side of it - a valve 27 are located in the connecting line 17. High vacuum pumps of this type are characterized by higher suction power and lower final pressures in comparison to backing pumps, but require a backing pump, which in the case shown forms the pump stage 11. This embodiment is suitable for processes taking place in the process chamber 2 in which relatively low pressures (e.g. 10~ 2 mbar) are to be reached as quickly as possible. Backing pumps also reach final pressures of around 1 mbar to 5.10" 2 mbar; however, by using high vacuum pumps, even lower pressures can be reached much more quickly.
Figur 4 zeigt einen Teilschnitt durch eine handelsübliche zweistufige Vorvakuumpumpe 5, die für den Einsatz in einer Mehrkammeranlage modifiziert wurde. Sie besitzt ein äußeres Gehäuse 28 mit einem Ölsumpf 29. Im äußeren Gehäuse 2 8 befindet sich die eigentliche PumpeFigure 4 shows a partial section through a commercially available two-stage backing pump 5 which has been modified for use in a multi-chamber system. It has an outer housing 28 with an oil sump 29. The actual pump is located in the outer housing 28
31, eine Drehschiebervakuumpumpe 31 mit zwei Stufen 11 und 13. Sie umfasst drei Scheiben 32, 33, 34 mit dazwischen angeordneten Pumpenringen 35, 36. Die Pumpenringe 35, 36 bilden Schöpfräume 37, 38, in denen sich je ein exzentrisch angeordneter Rotor 41 bzw. 42 mit seinen Schiebern 43 bzw. 44 befindet. Der Rotor 42 ist mit der Welle 45 eines nicht dargestellten Antriebsmotors gekoppelt. Außerdem sind die Lagerstümpfe der Rotoren 41, 42 im Bereich der Scheibe 33 miteinander verbunden. Der Durchmesser der Rotoren 41, 42 ist gleich, ihre Längen sind unterschiedlich. Dadurch ergeben sich für die beiden Pumpstufen 11, 13 unterschiedliche Saugvermögen. Bei der Verwendung der dargestellten Pumpe als zweistufige Vakuumpumpe mit hintereinander geschalteten Pumpstufen 11, 13 bildet die längere die saugseitige und die kürzere die druckseitige Pumpstufe.31, a rotary vane vacuum pump 31 with two stages 11 and 13. It comprises three disks 32, 33, 34 with pump rings 35, 36 arranged between them. The pump rings 35, 36 form suction chambers 37, 38, in each of which there is an eccentrically arranged rotor 41 or 42 with its vanes 43 or 44. The rotor 42 is coupled to the shaft 45 of a drive motor (not shown). In addition, the bearing stumps of the rotors 41, 42 are connected to one another in the area of the disk 33. The diameter of the rotors 41, 42 is the same, their lengths are different. This results in different suction capacities for the two pump stages 11, 13. When the pump shown is used as a two-stage vacuum pump with pump stages 11, 13 connected in series, the longer one forms the suction side pump stage and the shorter one forms the pressure side pump stage.
Die dargestellte Pumpe 5 ist derart modifiziert worden, dass die Pumpstufen 11, 13 parallel betrieben werden können. Als Einlass 14 der Pumpstufe 11 dient der ohnehin vorhandene, mit einem Saugstutzenventil 46 ausgerüstete Einlass. Der im einzelnen nicht dargestellte Auslass der Pumpstufe 11 steht nicht mehr mit dem Einlass der Pumpstufe 13 in Verbindung sondern mündet unterhalb des Filzhutes 47. Die Pumpstufe 13 ist mit einem unabhängigen Saugstutzen 48 ausgerüstet worden, der den Einlass 16 bildet. Der Saugstutzen 48 steht über den aus dem Gehäuse 28 heraus geführten Rohrabschnitt 49 mit dem Schöpfraum 37 in Verbindung. Der nicht dargestellte Auslass dieser Pumpstufe 13 mündet ebenfalls unterhalb des Filzhutes 47. Der Filzhut 47 hat die Funktionen Strömungsberuhigung und Ölgrobabscheidung.The pump 5 shown has been modified in such a way that the pump stages 11, 13 can be operated in parallel. The inlet 14 of the pump stage 11 is the inlet that is already present and is equipped with a suction nozzle valve 46. The outlet of the pump stage 11, which is not shown in detail, is no longer connected to the inlet of the pump stage 13 but opens below the felt cap 47. The pump stage 13 has been equipped with an independent suction nozzle 48, which forms the inlet 16. The suction nozzle 48 is connected to the pump chamber 37 via the pipe section 49 leading out of the housing 28. The outlet of this pump stage 13, which is not shown, also opens below the felt cap 47. The felt cap 47 has the functions of calming the flow and separating coarse oil.
G 01.16 G01.16
Weitere Abscheider, die an den Auslass 23 angeschlossen werden, müssen im Vergleich zum Stand der Technik nur einmal vorhanden sein.In comparison to the state of the art, additional separators connected to the outlet 23 only need to be present once.
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20121634U DE20121634U1 (en) | 2001-10-11 | 2001-10-11 | Multiple chamber plant used for degassing, coating or etching substrates comprises an evacuating system connected to chambers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20121634U DE20121634U1 (en) | 2001-10-11 | 2001-10-11 | Multiple chamber plant used for degassing, coating or etching substrates comprises an evacuating system connected to chambers |
DE10150015A DE10150015A1 (en) | 2001-10-11 | 2001-10-11 | Multiple chamber plant used for degassing, coating or etching substrates comprises an evacuating system connected to chambers |
Publications (1)
Publication Number | Publication Date |
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DE20121634U1 true DE20121634U1 (en) | 2003-03-20 |
Family
ID=26010340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE20121634U Expired - Lifetime DE20121634U1 (en) | 2001-10-11 | 2001-10-11 | Multiple chamber plant used for degassing, coating or etching substrates comprises an evacuating system connected to chambers |
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DE (1) | DE20121634U1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022108314A1 (en) | 2022-04-06 | 2023-10-12 | Ecoclean Gmbh | Method for passivating a surface of a workpiece and device for passivating workpieces |
-
2001
- 2001-10-11 DE DE20121634U patent/DE20121634U1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022108314A1 (en) | 2022-04-06 | 2023-10-12 | Ecoclean Gmbh | Method for passivating a surface of a workpiece and device for passivating workpieces |
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R151 | Utility model maintained after payment of second maintenance fee after six years |
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