EP1725397A1 - Hitzegeschütztes thermoplastisches bauteil, insbesondere fah rzeug-unterbodenkomponente mit integriertem hitzeschutz - Google Patents
Hitzegeschütztes thermoplastisches bauteil, insbesondere fah rzeug-unterbodenkomponente mit integriertem hitzeschutzInfo
- Publication number
- EP1725397A1 EP1725397A1 EP05714706A EP05714706A EP1725397A1 EP 1725397 A1 EP1725397 A1 EP 1725397A1 EP 05714706 A EP05714706 A EP 05714706A EP 05714706 A EP05714706 A EP 05714706A EP 1725397 A1 EP1725397 A1 EP 1725397A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thermoplastic
- component
- heat
- component according
- carrier layer
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
- B62D25/2072—Floor protection, e.g. from corrosion or scratching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0861—Insulating elements, e.g. for sound insulation for covering undersurfaces of vehicles, e.g. wheel houses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
- B62D29/001—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material
- B62D29/005—Superstructures, understructures, or sub-units thereof, characterised by the material thereof characterised by combining metal and synthetic material preformed metal and synthetic material elements being joined together, e.g. by adhesives
-
- 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
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12431—Foil or filament smaller than 6 mils
Definitions
- thermoplastic component in particular vehicle underbody component with integrated heat protection
- the present invention relates to a heat-protected thermoplastic component according to the preamble of claim 1 and in particular to a vehicle underbody component with integrated heat protection.
- Thermoplastic materials e.g. Polypropylene
- This increased absorption of heat radiation leads to the matrix of such plastics being heated up strongly under the influence of locally different heat radiation in local areas and thus undesirable material weak points being generated in these areas. Therefore, when using such materials in areas that are exposed to increased heat radiation, metallic foils are applied that reflect the infrared radiation.
- the matrix temperature of these plastics can thus be effectively reduced in the areas protected in this way, i.e. the undesirable changes in material, such as embrittlement, fragility, etc. can be avoided. This measure allows thermoplastic materials to be used even in very hot environments. Without such metallic
- Protective films are components made of thermoplastic material that are exposed to a rapid aging process and cannot be used in environments with increased infrared radiation.
- thermoplastic components are used to an increasing extent because, compared to metallic components, they are much lighter, can be shaped in any desired and cost-effective manner and are easy to recycle.
- heat protection for the components used in vehicle technology is becoming increasingly important.
- heat protection for components in vehicle technology proves to be particularly difficult due to the extraordinary mechanical loads, such as vibrations, wind forces, local temperature fluctuations, etc.
- Such components are currently provided in a known manner with a metallic foil on the thermally exposed areas in order to protect them there from the increased infrared radiation.
- this well-known measure only leads to products that can be used at short notice.
- US Pat. No. 5,464,952 discloses an acoustically effective underbody component for vehicles, which has a core layer made of a heat-resistant and heat-insulating fiber material.
- This core layer preferably consists of a fleece made of glass fibers, ceramic fibers, basalt wool or mixtures thereof and is provided on both sides with heat-reflecting foils made of aluminum or sheet metal in order to reflect any infrared radiation that may be incident on it.
- the fleece of this underbody component is provided at least in the edge area with a thermosetting binder in order to secure the metallic foils to the fiber fleece. At the same time, this fastening leads to a stiffening of the edge area, which gives the entire underbody component a certain dimensional stability.
- the heat-reflecting films preferably consist of a triple laminate film with a glass fiber layer, an aluminum layer and a thermoplastic polyolefin layer, in order to be able to be loosely bonded over the entire area in a molding press to the nonwoven fabric, which is usually mixed with a thermosetting binder.
- This component therefore has a relatively stiff edge region and a soft, ie flexible, central region.
- DE 197 05 511 A 1 describes a component used as a heat shield, which comprises a carrier layer made of a thermoplastic and a heat protection layer made of aluminum. Between the aluminum layer and the carrier layer there is a thermoplastic connecting layer (a hot melt adhesive) made of polypropylene (PP), polyester (PET), polyamide (PA) or thermoplastic polyurethane (TPU), which melts during the molding process and with which the Alu - Minium layer is cohesively connected to the carrier layer.
- a hot melt adhesive made of polypropylene (PP), polyester (PET), polyamide (PA) or thermoplastic polyurethane (TPU), which melts during the molding process and with which the Alu - Minium layer is cohesively connected to the carrier layer.
- This aluminum layer is designed far beyond the area of maximum heat load (hot-spot area) and is intended to dissipate the heat that is locally incident there, essentially convection heat.
- the aluminum layer used preferably has a thickness of 0.08 to 0.2 mm and the surface of the heat shield can be provided with special deformations.
- this heat shield has groove-shaped depressions which run orthogonally to one another and which are intended to improve the stability of the heat shield and its cooling effect.
- this metallic heat protection layer can also be designed in the manner of an expanded metal.
- thermoplastic component which does not have the disadvantages mentioned and which maintains its adhesiveness over its entire surface even after prolonged use under thermal radiation exposure.
- a heat-protected and vibration-resistant vehicle underbody component with an increased service life is to be created.
- These fold pockets are embedded in the plastic mass, i.e. they are mechanically anchored in the plastic mass and generate a peeling resistance W s of at least 0.15 N / mm 2 (e.g. at least 0.15 N / mm 2 ) that remains constant over the long term (ie over 10000 hours of operation at a temperature of approx. 140 ° C). W s > 0.15 N / mm 2 ).
- Clawing of the metallic foil can be generated in a simple manner during the molding process of the thermoplastic components mentioned, by using a nubbed or similar preformed film is introduced together with the plastic to be molded in a mold cavity of a molding press.
- the molding press is closed, the individual knobs, folds or similar pocket-shaped elevations are partially compressed, folded or folded and form more or less closed fold pockets.
- the thermoplastic plastic can flow around and enclose the individual fold pockets and in this way forms a form-fitting connection with the metallic foil.
- the individual fold pockets can be dimensioned differently depending on the intended use and functional purpose, can be arranged regularly or irregularly, can be coated with further materials and can be completely or incompletely surrounded by the plastic. In a preferred embodiment, at least 1-5 such folding pockets are provided in a range of 10-30 mm.
- the foil used is preferably made of aluminum and has a thickness of 0.01-0.1 mm, but can also be up to 0.5 mm.
- a heat-resistant adhesive is placed between the film and the plastic carrier, which does not lose its adhesiveness even when subjected to increased heat. It is understood that the person skilled in the art can provide further functional layers between the aluminum foil and the thermoplastic.
- the component according to the invention is preferably suitable for use in thermally stressed areas in vehicles, for example in the area of the engine compartment underbody, in the area of the spare wheel well, in the area of the vehicle tunnel, in the area of the vehicle bulkhead, in the area of the exhaust pipe or catalytic converter, etc.
- the advantages of the present invention are immediately apparent to the person skilled in the art and can be seen in particular in the fact that with these components a closed film protects the plastic over its entire area from infrared radiation and no delamination can occur.
- the peel resistance a measure of the adhesiveness and vibration resistance, remains essentially unchanged even after a long period of operation, ie at elevated temperatures, and can therefore also be used in thermally particularly exposed areas of vehicles.
- the present invention allows inexpensive production of the components according to the invention, in particular because the shape Exercise process of the thermoplastic material and the process of attaching the metallic foil to this material is possible in a single process step.
- no perforations need to be made and therefore shorter production times can also be achieved.
- the components according to the invention therefore do not show any signs of detachment in the long term even under increased vibration and heat loads and therefore do not lead to undesirable noise when used in the vehicle.
- FIG. 2 an enlarged sectional view through a schematically represented component according to FIG. 1;
- the component 1 shown in FIG. 1 comprises a trough-shaped carrier layer 2, which is shaped in a suitable manner depending on the intended use.
- a metallic foil 3 is inserted into this carrier layer 2.
- this film 3 has a multiplicity of pocket folds 4, which mechanically claw the metallic film 3 with the carrier layer 2.
- the carrier layer 2 is preferably made of a glass fiber reinforced thermoplastic (GMT) or a thermoplastic filled with continuous fibers (LFT). Suitable materials are well known to the person skilled in the art. Products with continuous fibers usually have continuous fibers deposited in loops, but can also simply be filled with long fibers.
- the metallic foil is preferably made of aluminum and has a thickness of 0.01 to 0.1 mm.
- this film can also be made from another metallic material, in particular from a thin steel sheet, and can have a thickness of up to 0.5 mm.
- a heat-resistant adhesive layer can be provided between this metallic foil 3 and the carrier layer 2, or additional heat-insulating or acoustically effective materials can be inserted.
- the metallic foil 2 has every 10-30 mm at least 1-5 fold pockets 4 according to the invention. These fold pockets 4 can be dimensioned or arranged differently depending on the intended use.
- FIG. 2 shows a schematic representation of a cross section through a component 1 constructed according to the invention.
- This has at least on one side a metallic foil 3 which is to act as a heat-reflecting foil in the finished component 1.
- 3 aluminum is preferably used for this film.
- This film 3 is fastened to a carrier layer 2 and has fold pockets 4 which are embedded in the carrier layer 2. These fold pockets 4 arise during the shaping process and are completely surrounded by the material of the carrier layer 2. The formation of these fold pockets 4 leads to a firm claw, i.e. positive connection, between the metallic foil 3 and the carrier layer 2.
- These fold pockets are produced in a simple manner by using nubbed or otherwise deformed foils for the molding process.
- these fold pockets 4 can be dimensioned and / or arranged differently by a person skilled in the art. It proves to be particularly advantageous for the invention that, in this type of anchoring, the film 3 does not have to be provided with perforations in order to be able to carry out mechanical fastening.
- the anchoring areas 6, i.e. the areas with the fold pockets 4 are protected from the infrared radiation impairing the thermoplastic material of the carrier layer 2.
- the film 3 it is up to the person skilled in the art to use the film 3 for other reasons, e.g. for acoustic reasons, to provide perforations and to provide a different material for the carrier layer 2, or to provide a further intermediate layer between the metallic foil 3 and the carrier layer 2.
- the person skilled in the art is free to introduce, for example, a hot melt adhesive, a ceramic layer and / or an acoustically effective layer as the intermediate layer.
- a metallic foil 3 which has previously been nubbed or otherwise provided with geometric deformations, is coated with an LFT, GMT or other suitable plastic material in a heated molding press.
- the side with the deformations, in particular with the knobs, is turned towards the plastic material and these deformations are compressed, compressed or folded as desired when the plastic material is placed on it.
- the pocket stems used according to the invention are formed, which allow the flowable plastic material to flow behind the individual pocket folds 4 in order to fully embed them.
- a positive connection according to the invention can be produced in a simple manner.
- the molding process turns the fibrous Hardened plastic material to form the desired carrier layer 2. At the same time, the hardening of the plastic layer 2 leads to a secure and long-term stable mechanical connection with the metallic foil 3.
- peeling resistance W s is understood to mean the adhesiveness of the metallic foil to the thermoplastic carrier part, ie a measure of the force required per unit area for separating the metallic foil 3 from the carrier layer 2.
- the measured values in area (I) relate to arrangements which have not yet been subjected to an aging process, while the measured values in area (II) relate to arrangements which have been exposed to a temperature of 140 ° C. over a period of 1000 hours.
- the measured values A (l) and A (ll) relate to an arrangement A in which a conventional metal hot-melt adhesive (MSK25) has been used between an LFT molded part and an aluminum foil. The measurement results show that there was no measurable liability.
- the measured values B (l) and B (ll) relate to an arrangement B in which an adhesive (HSK15) optimized for the connection of aluminum and polypropylene has been used between an LFT molded part and an aluminum foil.
- the measured values C (I) and C (II) relate to an arrangement C according to the invention in which an aluminum foil provided with shaped pockets has been applied to an LFT molded part and no adhesive has been used between this LFT molded part and the aluminum foil.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Laminated Bodies (AREA)
- Body Structure For Vehicles (AREA)
- Pallets (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202004004366U DE202004004366U1 (de) | 2004-03-19 | 2004-03-19 | Hitzegeschütztes thermoplastisches Bauteil, insbesondere Fahrzeug-Unterbodenkomponente mit integriertem Hitzeschutz |
PCT/CH2005/000164 WO2005090068A1 (de) | 2004-03-19 | 2005-03-18 | Hitzegeschütztes thermoplastisches bauteil, insbesondere fahrzeug-unterbodenkomponente mit integriertem hitzeschutz |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1725397A1 true EP1725397A1 (de) | 2006-11-29 |
Family
ID=32695388
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05714706A Ceased EP1725397A1 (de) | 2004-03-19 | 2005-03-18 | Hitzegeschütztes thermoplastisches bauteil, insbesondere fah rzeug-unterbodenkomponente mit integriertem hitzeschutz |
Country Status (9)
Country | Link |
---|---|
US (1) | US20070160864A1 (de) |
EP (1) | EP1725397A1 (de) |
JP (1) | JP4505500B2 (de) |
CN (1) | CN1933966A (de) |
BR (1) | BRPI0508955A (de) |
DE (1) | DE202004004366U1 (de) |
MX (1) | MXPA06010595A (de) |
RU (1) | RU2006131910A (de) |
WO (1) | WO2005090068A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202006001654U1 (de) * | 2006-02-02 | 2006-03-30 | Rieter Technologies Ag | Schallabsorbierendes Isolationsteil mit Verfestigungsprägungen |
CN102338263A (zh) * | 2010-07-20 | 2012-02-01 | 益科博能源科技(上海)有限公司 | 一种真空隔热系统 |
DE102012001577A1 (de) * | 2012-01-27 | 2013-08-01 | Daimler Ag | Kraftfahrzeug-Leichtbauteil mit thermischem Abschirmelement, Herstellung und Kraftfahrzeug mit dem Leichtbauteil |
DE102013206086A1 (de) | 2013-04-05 | 2014-10-09 | Röchling Automotive AG & Co. KG | Mehrschichtiges Strukturbauteil |
US9631659B2 (en) * | 2013-04-26 | 2017-04-25 | Honda Motor Co., Ltd. | Multi-material joints and methods |
US20150158267A1 (en) * | 2013-12-05 | 2015-06-11 | Carcoustics Techconsult Gmbh | Two-layer composite heat shield for underbody of a vehicle |
DE102016222718A1 (de) * | 2016-11-18 | 2018-05-24 | Dr. Ing. H.C. F. Porsche Ag | Kraftfahrzeugkarosserie-Anordnung |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1928399A1 (de) * | 1969-06-04 | 1970-12-10 | Heinz Suellhoefer | Selbsttragendes Daemmelement |
JPS53127646U (de) * | 1977-03-18 | 1978-10-11 | ||
DE3619032A1 (de) * | 1986-06-06 | 1987-12-10 | Bayer Ag | Verfahren zur herstellung eines metall-kunststoff-laminates |
EP0424312A1 (de) * | 1989-10-13 | 1991-04-24 | Alusuisse-Lonza Services Ag | Biegbare Verbundplatte |
US5422150A (en) * | 1993-12-23 | 1995-06-06 | Hycomp, Inc. | Substrate clad with fiber-reinforced polymer composite |
US5883172A (en) * | 1994-03-11 | 1999-03-16 | Henkel Kommanditgesellschaft Auf Aktien | Polyamide hotmelt adhesive |
US5656353A (en) * | 1995-06-27 | 1997-08-12 | Tba Composites, Inc. | Laminated heat shield with prongs and method of manufacturing same |
US5939212A (en) * | 1997-06-09 | 1999-08-17 | Atd Corporation | Flexible corrugated multilayer metal foil shields and method of making |
EP1058626B1 (de) * | 1998-03-04 | 2001-12-12 | Rieter Automotive (International) Ag | Treibstofftank mit integriertem hitzeschild |
JP2003094559A (ja) * | 2001-09-21 | 2003-04-03 | Toray Ind Inc | ハイブリッド材の設計方法 |
-
2004
- 2004-03-19 DE DE202004004366U patent/DE202004004366U1/de not_active Expired - Lifetime
-
2005
- 2005-03-18 WO PCT/CH2005/000164 patent/WO2005090068A1/de active Application Filing
- 2005-03-18 CN CNA2005800086317A patent/CN1933966A/zh active Pending
- 2005-03-18 MX MXPA06010595A patent/MXPA06010595A/es not_active Application Discontinuation
- 2005-03-18 BR BRPI0508955-7A patent/BRPI0508955A/pt not_active IP Right Cessation
- 2005-03-18 EP EP05714706A patent/EP1725397A1/de not_active Ceased
- 2005-03-18 US US10/593,155 patent/US20070160864A1/en not_active Abandoned
- 2005-03-18 JP JP2007502168A patent/JP4505500B2/ja not_active Expired - Fee Related
- 2005-03-18 RU RU2006131910/02A patent/RU2006131910A/ru not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2005090068A1 * |
Also Published As
Publication number | Publication date |
---|---|
MXPA06010595A (es) | 2007-01-19 |
DE202004004366U1 (de) | 2004-07-08 |
BRPI0508955A (pt) | 2007-08-14 |
CN1933966A (zh) | 2007-03-21 |
JP2007527808A (ja) | 2007-10-04 |
JP4505500B2 (ja) | 2010-07-21 |
WO2005090068A1 (de) | 2005-09-29 |
RU2006131910A (ru) | 2008-04-27 |
US20070160864A1 (en) | 2007-07-12 |
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