DE10314844B4 - Method and use of a method for producing through-holes and nozzle of an injector - Google Patents
Method and use of a method for producing through-holes and nozzle of an injector Download PDFInfo
- Publication number
- DE10314844B4 DE10314844B4 DE10314844A DE10314844A DE10314844B4 DE 10314844 B4 DE10314844 B4 DE 10314844B4 DE 10314844 A DE10314844 A DE 10314844A DE 10314844 A DE10314844 A DE 10314844A DE 10314844 B4 DE10314844 B4 DE 10314844B4
- Authority
- DE
- Germany
- Prior art keywords
- protective element
- laser
- cavity
- laser beam
- wall
- 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 - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
- B23K26/0624—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses using ultrashort pulses, i.e. pulses of 1ns or less
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/18—Working by laser beam, e.g. welding, cutting or boring using absorbing layers on the workpiece, e.g. for marking or protecting purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
- B23K26/389—Removing material by boring or cutting by boring of fluid openings, e.g. nozzles, jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/40—Removing material taking account of the properties of the material involved
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
- B23K2103/52—Ceramics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/90—Selection of particular materials
- F02M2200/9007—Ceramic materials
Abstract
Verfahren zur Herstellung einer Durchgangsbohrung (5) in einem Werkstück (1) mit Hohlraum (2) mittels Laser, wobei ein Schutzelement (6) in dem Hohlraum (2) angeordnet wird, derart, dass nach dem Durchbruch eines von einem Laser (3) erzeugten Laserstrahls (4) durch eine Wand (9) des Werkstücks (2) der Laserstrahl (4) auf das Schutzelement (6) trifft und zwischen der Innenwand des Wertstücks (1) und dem Schutzelement (6) ein gegebener Mindestabstand (A) vorhanden ist, wobei das Schutzelement (6) lose in den Hohlraum (2) eingelegt wird, dadurch gekennzeichnet, dass das Schutzelement (6) als Kugel ausgebildet ist, wobei der Hohlraum (2) eine sich verjüngende, insbesondere konische Form aufweist, an welcher das Schutzelement (6) anliegt, sodass sich das Schutzelement (6) beim Einlegen in den Hohlraum (2) selbst positioniert.method for producing a through hole (5) in a workpiece (1) with Cavity (2) by means of a laser, wherein a protective element (6) in the cavity (2) is arranged such that after the breakthrough one of a laser (3) generated by a laser beam (4) through a wall (9) of the workpiece (2) the laser beam (4) hits the protective element (6) and between the Inner wall of the piece of value (1) and the protective element (6) a given minimum distance (A) available is, wherein the protective element (6) is loosely inserted into the cavity (2), characterized in that the protective element (6) is formed as a ball is, wherein the cavity (2) is a tapered, in particular conical Mold, on which the protective element (6) is applied, so itself the protective element (6) when inserted into the cavity (2) positioned.
Description
Die vorliegende Erfindung betrifft ein Verfahren und die Verwendung eines Verfahrens zur Herstellung einer Durchgangsbohrung und die Düse eines Injektors.The The present invention relates to a method and use a method for producing a through hole and the Nozzle one Injector.
Die Verwendung von Laserstrahlen zur Herstellung von Durchgangsbohrungen in metallischen Werkstücken ist aus dem Stand der Technik bekannt. Wenn eine Durchgangsbohrung in ein Werkstück mit einem Hohlraum eingebracht werden soll, tritt jedoch das Problem auf, dass der Laserstrahl nach Durchbohren der Werkstückwand in den Hohlraum eintritt und auf die gegenüber liegende Wand des Hohlraumes trifft. Dadurch beschädigt der Laser nach dem Durchbohren der Wand auch die dem gebohrten Loch gegenüber liegende Wand.The Use of laser beams for the production of through-holes in metallic workpieces is known from the prior art. If a through hole into a workpiece is to be introduced with a cavity, but the problem occurs on that the laser beam after piercing the workpiece wall in enters the cavity and on the opposite wall of the cavity meets. Damaged the laser after piercing the wall also the hole drilled across from lying wall.
Aus
Aus
Es ist von daher Aufgabe der vorliegenden Erfindung, ein Verfahren zur Herstellung einer Durchgangsbohrung mittels Laser in einem Werkstück mit Hohlraum bereitzustellen, welches einfach und kostengünstig ausführbar ist und insbesondere für die Großserienfertigung geeignet ist.It is therefore an object of the present invention, a method for making a through hole by means of laser in a workpiece with cavity to provide, which is simple and inexpensive executable and in particular for mass production suitable is.
Diese Aufgabe wird durch ein Verfahren mit den Merkmalen des Hauptanspruchs gelöst. Die Unteransprüche zeigen bevorzugte Weiterbildungen der Erfindung.These The object is achieved by a method having the features of the main claim solved. The dependent claims show preferred developments of the invention.
Gemäß einem Verfahren zur Herstellung von Durchgangsbohrungen mittels Laser in Werkstücken mit Hohlraum wird erfindungsgemäß ein Schutzelement derart in dem Hohlraum angeordnet, dass der Laserstrahl nach dem Durchbruch durch die Wand des Werkstücks auf das Schutzelement trifft. Dabei ist zwischen der Wand des Werkstücks und dem Schutzelement ein vorbestimmter Abstand vorhanden. Dadurch kann erfindungsgemäß vermieden werden, dass Material, welches von dem Schutzelement durch den Laser abge tragen wird, zurück in die Durchgangsbohrung spritzt und dort die Qualität der Durchgangsbohrung verschlechtert. Somit wird im Unterschied zu den bisher bekannten Verfahren durch die Einhaltung eines vorbestimmten Abstands zwischen dem Schutzelement und der Innenwand ein einfaches und kostengünstiges Verfahren bereitgestellt, bei dem zudem noch die Qualität der Durchgangsbohrung verbessert werden kann.According to one Method for producing through-holes by means of laser in workpieces with Cavity is inventively a protective element arranged in the cavity such that the laser beam after the Breakthrough through the wall of the workpiece meets the protective element. It is between the wall of the workpiece and the protective element predetermined distance available. This can be avoided according to the invention that material, which carry abge of the protective element by the laser will, back injected into the through hole and there the quality of the through hole deteriorated. Thus, in contrast to the previously known Method by maintaining a predetermined distance between the protective element and the inner wall a simple and inexpensive Provided method, in addition also the quality of the through hole can be improved.
Erfindungsgemäß ist weiterhin das Schutzelement als Kugel ausgebildet. Dadurch kann auf einfache Weise ein Abstand zwischen der Wand des Werkstücks und dem Schutzelement realisiert werden. Vorzugsweise weist der Hohlraum eine sich verjüngende, insbesondere konische Form auf. Wenn dabei als Schutzelement eine Kugel verwendet wird, kann besonders einfach ein Abstand zwischen dem Schutzelement und der Innenwand realisiert werden, da sich zwischen dem sich verjüngenden Hohlraum und der Kugel eine linienförmige Kontaktfläche ausbildet, sodass außer an dieser linienförmigen Kontaktfläche immer ein Abstand zwischen dem Schutzelement und der Innenwand des Hohlraums vorhanden ist.According to the invention is still the protective element is formed as a ball. This can be easy on Way realized a distance between the wall of the workpiece and the protective element become. Preferably, the cavity has a tapered, in particular conical shape. If as a protective element a Sphere used can be particularly easy a distance between the protective element and the inner wall can be realized as between the rejuvenating Cavity and the ball forms a linear contact surface, so except at this line-shaped contact area always a distance between the protective element and the inner wall of the Cavity is present.
Besonders bevorzugt ist der Abstand zwischen der Innenwand des Werkstücks, an der die Durchgangsbohrung ausgebildet ist, und dem Schutzelement größer oder gleich 0,10 mm.Especially Preferably, the distance between the inner wall of the workpiece, on the through-hole is formed, and the protective element bigger or equal to 0.10 mm.
Weiterhin bevorzugt ist das Material des Schutzelements derart gewählt, dass das Schutzelement einen hohen Abtragwiderstand gegen den auf ihn treffenden Laserstrahl aufweist. Dadurch wird erreicht, dass möglichst wenig Material vom Schutzelement durch den Laser abgetragen wird. Dadurch ist die Gefahr gering, dass sich vom Laser abgetragenes Material des Schutzelements an der Innenwand des Werkstücks ablagert.Farther Preferably, the material of the protective element is chosen such that the protective element has a high abrasion resistance against him having incident laser beam. This ensures that as possible little material is removed from the protective element by the laser. As a result, the risk is low that eroded by the laser Material of the protective element on the inner wall of the workpiece deposits.
Vorzugsweise ist das Schutzelement aus einem Material hergestellt, welches ein gutes Streuvermögen und/oder eine ausreichend hohe Absorptionseigenschaft aufweist, um die Laserenergie auf ein möglichst großes Volumen zu verteilen.Preferably the protective element is made of a material which is a good spreading power and / or has a sufficiently high absorption property, to the laser energy on a possible great To distribute volume.
Besonders bevorzugt ist das Schutzelement aus einem keramischen Material hergestellt. Dadurch kann das Schutzelement besonders einfach und kostengünstig bereitgestellt werden. Insbesondere bei Verwendung von Lasern im sichtbaren oder nahen infraroten Wellenlängenbereich ist das Schutzelement besonders bevorzugt aus einem hellen keramischen Material hergestellt. Durch die Wahl einer hellen Farbe für die Keramik ergeben sich besonders gute Streu- und Absorptionseigenschaften der Keramik.Particularly preferably, the protective element is made of a ceramic material. As a result, the protective element can be provided in a particularly simple and cost-effective manner. Especially when using lasers in the visible or near infrared wavelength range is the Schut zelement particularly preferably made of a bright ceramic material. The choice of a light color for the ceramic gives rise to particularly good scattering and absorption properties of the ceramic.
Besonders bevorzugt wird das Schutzelement einfach lose in den Hohlraum eingelegt. Dadurch ist zum einen das Einbringen des Schutzelements in den Hohlraum extrem einfach und ebenfalls das Entfernen nach Herstellung der Durchgangsbohrung vereinfacht.Especially Preferably, the protective element is simply loosely inserted into the cavity. As a result, on the one hand, the introduction of the protective element in the cavity extremely easy and also removing after making the Through hole simplified.
Vorzugsweise ist das keramische Material, welches für das Schutzelement verwendet wird, Aluminiumoxid oder Zirkonoxid.Preferably is the ceramic material used for the protective element is, alumina or zirconia.
Das erfindungsgemäße Verfahren wird besonders bevorzugt zur Herstellung von Spritzlöchern bei Kraftstoffeinspritzdüsen verwendet. Aufgrund der Großserienfertigung derartiger Kraftstoffeinspritzdüsen können durch das erfindungsgemäße Verfahren große Kostenvorteile bei einer verbesserten Genauigkeit der Spritzlöcher der Düse erhalten werden.The inventive method is particularly preferred for the production of spray holes Fuel injectors used. Due to the mass production such fuel injectors can by the method according to the invention great cost advantages be obtained with an improved accuracy of the injection holes of the nozzle.
Nachfolgend wird die Erfindung unter Bezugnahme auf die begleitende Zeichnung beschrieben.following the invention will be described with reference to the accompanying drawing described.
Die einzige Figur zeigt eine schematische Schnittansicht einer Düse eines Kraftstoffinjektors, bei dem das erfindungsge mäße Verfahren zur Herstellung von Spritzlöchern angewandt wird.The single figure shows a schematic sectional view of a nozzle of a Fuel injector, wherein the erfindungsge Permitted method for the preparation of spray holes is applied.
Die
Figur zeigt in schematischer Ansicht die Durchführung des erfindungsgemäßen Verfahrens. Ein
Laser
Um
ein Auftreffen des Laserstrahles
Die
Kugel
Weiterhin
wird durch den sich verjüngenden Hohlraum
Die
in
Das
erfindungsgemäße Verfahren
kann somit insbesondere vorteilhaft bei der Herstellung von Spritzlöchern bei
Kraftstoffinjektoren verwendet werden. Da die Keramikkugeln
Die vorhergehende Beschreibung des Ausführungsbeispiels gemäß der vorliegenden Erfindung dient nur zu illustrativen Zwecken und nicht zum Zwecke der Beschränkung der Erfindung. Im Rahmen der Erfindung sind verschiedene Änderungen und Modifikationen möglich, ohne den Umfang der Erfindung sowie ihrer Äquivalente zu verlassen.The previous description of the embodiment according to the present invention This invention is for illustrative purposes only and not for purpose the restriction the invention. Within the scope of the invention are various changes and modifications possible, without departing from the scope of the invention and its equivalents.
Claims (13)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10314844A DE10314844B4 (en) | 2003-04-01 | 2003-04-01 | Method and use of a method for producing through-holes and nozzle of an injector |
PCT/EP2004/002672 WO2004087364A1 (en) | 2003-04-01 | 2004-03-15 | Method for producing a through-bore in a workpiece, use of said method for producing an injection orifice in a nozzle and nozzle for an injector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10314844A DE10314844B4 (en) | 2003-04-01 | 2003-04-01 | Method and use of a method for producing through-holes and nozzle of an injector |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10314844A1 DE10314844A1 (en) | 2004-10-28 |
DE10314844B4 true DE10314844B4 (en) | 2006-06-08 |
Family
ID=33038840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10314844A Expired - Fee Related DE10314844B4 (en) | 2003-04-01 | 2003-04-01 | Method and use of a method for producing through-holes and nozzle of an injector |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10314844B4 (en) |
WO (1) | WO2004087364A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015218760A1 (en) | 2015-09-29 | 2017-03-30 | Continental Automotive Gmbh | Method and device for drilling a through-hole in a workpiece by means of a laser beam |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE502004003169D1 (en) * | 2004-11-30 | 2007-04-19 | Delphi Tech Inc | Device for producing a bore by means of laser radiation |
EP1669158B1 (en) * | 2004-12-07 | 2007-04-11 | Delphi Technologies, Inc. | Process for laser manufacturing a hole emerging in an inner space of a workpiece with chemical treatment for cleaning the inner space |
JP4945362B2 (en) | 2007-07-30 | 2012-06-06 | 本田技研工業株式会社 | Drilling method and apparatus therefor |
DE102011078651A1 (en) | 2011-07-05 | 2013-01-10 | Robert Bosch Gmbh | Method for producing at least one through-hole and apparatus for carrying out such a method |
DE102014220523A1 (en) | 2014-10-09 | 2016-04-14 | Siemens Aktiengesellschaft | Method for producing through holes by means of laser radiation in a wall of a component |
DE102014220526A1 (en) * | 2014-10-09 | 2016-04-14 | Siemens Aktiengesellschaft | Method for producing through holes by means of laser radiation in a wall of a component |
DE102021108496A1 (en) | 2021-04-06 | 2022-10-06 | Trumpf Laser- Und Systemtechnik Gmbh | Device and method for determining the service life of a workpiece test piece when irradiated with a laser |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19908630A1 (en) * | 1999-02-27 | 2000-08-31 | Bosch Gmbh Robert | Shielding against laser beams |
US6407362B1 (en) * | 1998-07-22 | 2002-06-18 | Hydraulik-Ring Gmbh | Protective device for producing very small bores in tubular components, and method for producing bores |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4857696A (en) * | 1987-06-12 | 1989-08-15 | Raycon Textron Inc. | Laser/EDM drilling manufacturing cell |
DE3825134A1 (en) * | 1988-07-23 | 1990-01-25 | Bosch Gmbh Robert | ELECTROMAGNETICALLY ACTUABLE VALVE AND METHOD FOR THE PRODUCTION THEREOF |
GB2249279B (en) * | 1990-10-17 | 1994-01-05 | Rolls Royce Plc | Improvements in or relating to drilling turbine blades |
US6303901B1 (en) * | 1997-05-20 | 2001-10-16 | The Regents Of The University Of California | Method to reduce damage to backing plate |
GB2328894B (en) * | 1997-09-03 | 1999-07-14 | Oxford Lasers Ltd | Laser drilling |
US6070813A (en) * | 1998-08-11 | 2000-06-06 | Caterpillar Inc. | Laser drilled nozzle in a tip of a fuel injector |
US6339208B1 (en) * | 2000-01-19 | 2002-01-15 | General Electric Company | Method of forming cooling holes |
-
2003
- 2003-04-01 DE DE10314844A patent/DE10314844B4/en not_active Expired - Fee Related
-
2004
- 2004-03-15 WO PCT/EP2004/002672 patent/WO2004087364A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6407362B1 (en) * | 1998-07-22 | 2002-06-18 | Hydraulik-Ring Gmbh | Protective device for producing very small bores in tubular components, and method for producing bores |
DE19908630A1 (en) * | 1999-02-27 | 2000-08-31 | Bosch Gmbh Robert | Shielding against laser beams |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015218760A1 (en) | 2015-09-29 | 2017-03-30 | Continental Automotive Gmbh | Method and device for drilling a through-hole in a workpiece by means of a laser beam |
Also Published As
Publication number | Publication date |
---|---|
DE10314844A1 (en) | 2004-10-28 |
WO2004087364A1 (en) | 2004-10-14 |
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OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: CONTINENTAL AUTOMOTIVE GMBH, 30165 HANNOVER, DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |