EP3884251A1 - Sensorvorrichtung und verfahren zur herstellung einer sensorvorrichtung - Google Patents
Sensorvorrichtung und verfahren zur herstellung einer sensorvorrichtungInfo
- Publication number
- EP3884251A1 EP3884251A1 EP19806175.6A EP19806175A EP3884251A1 EP 3884251 A1 EP3884251 A1 EP 3884251A1 EP 19806175 A EP19806175 A EP 19806175A EP 3884251 A1 EP3884251 A1 EP 3884251A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor device
- surface structure
- medium
- sensor
- equal
- 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.)
- Pending
Links
Classifications
-
- 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
- B23K26/362—Laser etching
-
- 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 1 ns or less
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0627—Protection against aggressive medium in general
- G01L19/0654—Protection against aggressive medium in general against moisture or humidity
Definitions
- Solidification to ice can exert uncontrolled forces, the measurement signal from the sensor can be falsified immediately after the next start of the motor vehicle or, in extreme cold, even while driving.
- this phenomenon can occur with pressure sensors that detect the pressure of a gaseous or liquid medium via the deformation of a thin membrane for media separation. If the condensate freezes in the sensor as described, it can take a long time
- the measuring accuracy of pressure sensors decreases significantly at low temperatures, whereby the measuring signal can show such falsifications that misdiagnoses occur.
- the sensor for the medium represent a dead end and may be the coldest point in the system, there may also be condensate build up in the sensor such that excessive stress is placed on the sensor which may even lead to premature destruction.
- Engine waste heat is therefore no longer sufficient.
- the sensor signal is only evaluated when certain positive temperatures have been reached. The sensor is therefore only operated in a certain temperature window.
- At least one object of certain embodiments is to specify a sensor device in advance
- At least one object of further embodiments is to specify a method for producing a sensor device.
- the sensor element can in particular be the active part of the sensor device, that is to say the part through which the measurement is carried out.
- the sensor device can be provided and set up to measure at least one property of a medium.
- the medium can preferably be a gas or a
- the medium vapor and / or droplets can have a liquid, for example moisture, ie water vapor and / or
- the medium can also contain particles, for example soot.
- the medium can be air or an exhaust gas or a mixture thereof.
- a property to be measured by the sensor device can particularly preferably be a pressure, so that the
- Sensor device can be designed as a pressure sensor.
- the sensor element can be, for example Pressure sensor chip, which has a membrane that is exposed to the medium during operation. Depending on the pressure of the medium on one side of the membrane compared to a pressure on the other side of the membrane, the membrane can deform to different extents.
- Membrane deformation may be able to determine information about the pressure of the medium.
- a property to be measured by the sensor device can also be a temperature, for example, so that the sensor device can additionally or alternatively also be used as a temperature sensor
- the sensor element can, for example, have or be a thermistor.
- the sensor device can also be set up and provided to measure one or more optical properties of the medium.
- the sensor element can have, for example, light-generating and / or light-detecting elements, for example in the form of one or more diodes.
- the sensor device can also have a plurality of sensor elements that
- the sensor device can be used to measure several parameters of the medium.
- the media feed can
- Sensor device for example, have a line, such as a connecting piece, which is connected to the volume in which the medium is located. If the medium has, for example, or is an exhaust gas from a motor vehicle, the sensor device can be equipped with the
- the surface with the surface structure is a surface of the sensor device that is exposed to the medium during operation of the sensor device, for which at least one parameter by means of the
- Surface structure reduced wettability can particularly preferably be the wettability of the surface in relation to the medium or at least one component of the medium, in particular, for example, in relation to condensing
- the medium or the at least one component of the medium, to which wettability relates can be in liquid form, for example in the form of droplets, or can also condense on contact with the surface.
- the component of the medium to which the wettability of the surface relates may be water in the form of
- Moisture i.e. water vapor and / or droplets
- the surface with the surface structure can in particular be free of a coating which reduces the wetting. In other words, the surface can be free of one
- coating denotes a part of the production of the
- Sensor device specifically applied material in the form of a partially or completely covering layer.
- Coating could be, for example, a fluoropolymer such as Teflon or a fluorosilane, which is known as a water-repellent coating.
- the surface with the surface structure can thus in particular be a surface of a part or a component of the
- Be sensor device that has a higher wettability without the surface structure.
- the material of the surface with the surface structure can thus in particular
- Material of the corresponding part or the corresponding component of the sensor device can, depending on the material from which the part or the component of the
- the surface with the surface structure can, for example, at least
- the surface with the surface structure can accordingly also be different
- Surface structure can be a surface of the sensor element. If the sensor element is designed as a pressure sensor element, such as a pressure sensor chip, the surface with the surface structure can particularly preferably be part of the membrane. In particular, this can preferably be the entire part of the surface of the sensor element and thus, in particular, the membrane that is in operation
- Sensor device is in contact with the medium. If the sensor element is, for example, a silicon-based chip, the surface can be covered with the
- the surface can be covered with the
- Sensor device can cover the surface with the
- the entire surface of the medium exposed to the medium during operation of the sensor device can be particularly preferred
- Sensor device have a surface structure.
- the surface with the surface structure can be hydrophobic or due to the surface structure
- the contact angle between water and the surface with the surface structure is greater than or equal to 110 ° or even greater than or equal to 135 ° or even greater than or equal to 150 °.
- the hydrophobic or syperhydrophobic effect of the surface can be brought about solely by the surface structure, without an additional hydrophobic coating being present, as described above.
- the microstructure can in particular have a large number of elevations and / or
- Characteristic sizes of the elevations and depressions can, for example, be selected from: height, length, width, diameter, depth, maximum Extension length, distance, especially quasi-periodic distance.
- the microstructure can, for example, have elevations and / or depressions with circular and / or elongated ones
- the microstructure can have circular and / or elliptical elevations and / or
- Indentations that is, hole-like indentations and / or mountain-like or island-like elevations, which can be columnar, cylindrical and / or conical, for example.
- microstructure can be elongated
- the elevations and / or depressions are at a distance of less than or equal to 500 ⁇ m. Furthermore, the surveys and / or
- Depressions have a distance of greater than or equal to 0.1 ym or greater than or equal to 0.5 ym or greater than or equal to 1 ym.
- the elevations and / or depressions can be at a distance from one another of less than or equal to 300 ⁇ m or less than or equal to 200 ⁇ m or less than or equal to 100 ⁇ m or less than or equal to 50 ⁇ m.
- the elevations and / or depressions have a height or depth of less than or equal to 250 ⁇ m. Furthermore, values of less than or equal to 200 ym or less than or equal to 150 ym or less than or equal to 100 ym or less than or equal to 50 ym and / or greater than or equal to 1 ym or greater than or equal to 5 ym or greater than or equal to 10 ym.
- the nanostructure can have a multiplicity of elevations and / or depressions which have characteristic sizes in the range of greater than or equal to 1 nm and less than or equal to 100 nm.
- the elevations and / or depressions of the nanostructure can have shapes as described in connection with the microstructure.
- the nanostructure can be particularly preferred
- Wells have hole-like wells and / or mountain or island-shaped elevations.
- the elevations and / or depressions can preferably have widths or diameters of greater than or equal to 1 nm or greater than or equal to 5 nm and / or less than or equal to 100 nm or less than or equal to 50 nm or less than or equal to 25 nm.
- the surface structure can also have a combination of a microstructure and a nanostructure.
- the surface structure can have a hierarchical micro-nano structure, that is to say a microstructure which is covered with a nanostructure.
- the surface structure thus has a microstructure, for example
- Ultrashort pulse laser radiation can be performed
- the pulsed laser radiation has laser pulses with a pulse duration of less than or equal to 100 ns and preferably less than or equal to 100 fs or less than or equal to 50 fs or less than or equal to 30 fs.
- parameters of the laser radiation for example selected from wavelength, energy, beam width, fluence, degree of polarization,
- Feed speed, pulse frequency, number of pulses, pulse duration, angle of incidence and scan line offset can be set in order to produce a desired material removal
- the production of the surface structure can be carried out as part of the customary production process for the individual
- Components of the sensor device take place.
- the irradiation by means of pulsed laser radiation can be carried out as in the usual
- Laser process for one or more or all surfaces of the sensor device that come into contact with the medium during operation of the sensor device is a (super) hydrophobic
- Hierarchical micro-nano structures can be based
- LIPSS laser-induced periodic surface structures
- the method described here makes it possible to create a uniform resistance to icing of various parts of the sensor device.
- a potential undesirable wetting of one or more or all surfaces with condensate of the medium in the sensor device can be implemented an additional, laser-based process step in the manufacture of the sensor device can be reduced or even completely prevented, since the surface structure produced prevents the accumulation of condensate on media-carrying surfaces such as, for example, the media feed and / or
- media-reducing surfaces such as a membrane can greatly reduce or even completely prevent.
- the resulting surfaces can have, for example, periodic or random micro- and / or nanostructures and, in particular, also hierarchical micro-nano-structures, the structure of which, in addition to the material, includes the wavelength and
- Polarization of the laser pulses used such as ultra-short pulses.
- Adhesion of condensate can occur when the
- Coating avoids the risk of delamination of the coating, which means that longer lifetimes and improved operating behavior can be expected.
- Elements such as pressure-sensitive membranes may be suitable. Due to the very good focusability of laser radiation down to the diameter down to the micrometer range, even very small functional elements of the Surface structure with sizes in the range of a few micrometers or above or even below flexible and fast
- Ultrashort pulse laser processing can preferably be done in-line in the production process and very quickly using modern laser technology.
- a multifunctionalization of a media-separating surface such as a membrane of a pressure sensor element in the form of pressure transmission, condensate repellency and self-cleaning can thus be achieved.
- Figures 1A to IC are schematic representations of a
- FIGS. 2A to 2C are schematic representations of
- 1A to IC show a sensor device 100 and a method for
- Sensor device 100 is in particular provided and set up to measure one or more parameters of a medium 99, which can be selected, for example, from a pressure, a temperature and optical properties.
- the sensor device 100 of the exemplary embodiment shown is a pressure sensor which, for example, in the context of an exhaust gas measurement in one
- the medium 99 can be, for example, an exhaust gas from an Otto or
- the medium 99 can also at least partially have air. This can be the case in particular at a point in time before the engine is started and / or shortly after the engine is started.
- the medium 99 can at least temporarily also have moisture, which is contained, for example, in the air and / or in the exhaust gas, so that there may be the possibility that the medium 99 forms a condensate at low temperatures. Even if the following description is directed to a special embodiment of the sensor device 100, this applies equally to others
- the sensor device 100 has a sensor element 1, which is the active part of the
- the sensor element 1 is a pressure sensor chip that, for example, is based on
- the senor element 1 can also have a ceramic or metal membrane, for example.
- the sensor element 1 is located in a housing 2 which, for example, plastic, metal and / or
- the medium 99 can be guided to the sensor element 1 through a media feed 21, for example in the form of a line formed by a connecting piece.
- a media feed 21 for example in the form of a line formed by a connecting piece.
- the sensor element 1 can be located in a volume 20 of the housing 2 which is closed off by a cover 3.
- the volume 20 can be a reference pressure
- the volume 20 may also be possible for the volume 20 to be open to the environment or also to be connected to the exhaust system, so that the sensor element 1 is one
- the surface of the sensor element 1 which faces the volume 20 and / or the surfaces of the walls forming the volume 20 and optionally a feed line or media feed can be configured in a manner or similar to that for the media feed 21 and that in the following
- the sensor device 100 is shown in a highly simplified manner in the exemplary embodiment shown and can further or alternative for corresponding
- the sensor device 100 has surfaces 4 which face the medium 99 during normal operation.
- the surfaces 4 are marked by a
- the latter can be formed in particular by the membrane of the sensor element 1. If the temperature in the media feed 21 and / or in the area of the sensor element 1 falls to a sufficiently low value, it may be that at least a part of the medium 99 condenses on at least a part of the surfaces 4 or, at even lower temperatures, freezes what can lead to the problems described in the general section above.
- the sensor device 100 has at least one surface 4 with a surface structure 40, which is indicated in a section in FIG. 1B and which reduces the wettability of the surface 4 with the medium 99 or at least one component contained in the medium 99.
- the surface 4 with the surface structure 40 can be superhydrophobic due to the surface structure 40. That can
- the contact angle between water and the surface 4 with the surface structure 40 is greater than or equal to 110 ° or even greater than or equal to 135 ° or even greater than or equal to 150 °.
- the syperhydrophobic effect of the surface 4 can be brought about solely by the surface structure 40.
- the surface 4 with the surface structure 40 is
- the surface 4 will not formed by a material such as Teflon or another fluoropolymer that has been applied in a targeted manner to reduce the wettability. Rather, the surface 4 with the surface structure 40 can be a surface of a part or a component of the sensor device 100, which would have a high wettability without the surface structure 40.
- Surface structure 40 is thus, in particular, the material of the corresponding part or the corresponding component of the sensor device 100, and, depending on the material from which the part or the component of the sensor device 100 with the surface 4 with the surface structure 40 is made, can be a semiconductor material, for example Metal or a metal alloy, a plastic, a
- the surface 4 indicated in FIG. 1B with the surface structure 40 can be a surface of the
- the surface 4 with the surface structure 40 can particularly preferably be part of the membrane of the sensor element 1.
- the surface 4 with the surface structure 40 can particularly preferably be part of the membrane of the sensor element 1.
- Surface structure 40 can be formed by a surface of the membrane facing the media feed 21 and thus the medium 99 during operation of the sensor device 100. If the sensor element 1 is a silicon-based chip, the surface with the surface structure can
- the surface 4 with the surface structure 40 can accordingly be a ceramic or metallic surface.
- the surface 4 with the surface structure 40 can be at least part of the media feed 21.
- the surface 4 with the surface structure 40 can be silicon or an oxide or nitride with silicon.
- Surface structure 40 may be at least part of the inner wall of the connection piece shown in FIG. 1A. Is this
- the surface 4 with the surface structure 40 can accordingly also be a metallic surface.
- the entire surface of the sensor device 100 exposed to the medium 99 during operation of the sensor device 100 can have the surface structure 40. Accordingly, the wettability of all in
- the surface structure 40 can have a microstructure and / or a nanostructure, that is to say, as shown in FIG. 1B, have a multiplicity of elevations 41 and / or depressions 42 in the surface 4 which have characteristic sizes in the range of greater than or equal to 0.1 ⁇ m and less or equal to 500 ⁇ m in the case of a microstructure and in the range greater than or equal to 1 nm and less than or equal to 100 nm.
- the surface structure for producing the sensor device is produced by means of pulsed laser radiation, which is indicated by the broken arrow with the reference number 201.
- pulsed laser radiation which is indicated by the broken arrow with the reference number 201.
- Ultrashort pulse laser radiation can be performed
- a laser 200 such as a nanosecond laser or preferably a picosecond laser or particularly preferably a femtosecond laser.
- a laser 200 such as a nanosecond laser or preferably a picosecond laser or particularly preferably a femtosecond laser.
- Degree of polarization, feed rate, pulse frequency, number of pulses, pulse duration, angle of incidence and scan line offset can be set in order to bring about a desired material removal in order to produce the surface structure.
- an interference technique can be used, for example, to produce periodic micro- and / or nanostructures.
- the pulsed laser radiation 201 which can be adjusted accordingly depending on the surface material to be processed and the desired surface structure, it may be possible to use the same or different ones
- Laser irradiation can be carried out as a process step inserted into the usual manufacturing process.
- Surface structure 40 can have, for example, circular and / or elongated cross sections.
- the surface structure 40 can be circular and / or
- Surface structure 40 has elongated, branching or non-branching walls and / or trenches extending along surface 4, which can be crossing or non-crossing or parallel.
- the elevations 41 and / or depressions 42 can be at least partially or all periodically and therefore regularly or at least partially or all irregularly shaped and / or distributed.
- FIGS. 2A to 2C three are purely exemplary
- the surface structure 40 can have, for example, periodically arranged depressions 42 in the form of channels that are parallel to one another. As an alternative to this, the channels can, for example, also be irregular and / or not straight and / or intersecting. As shown in FIG. 2B, the surface structure 40 can also have hole-like depressions 42, for example with a circular cross section as shown in FIG. 2B. In addition, other forms, as described above and in the general part, are also possible. Between the depressions 42 shown the surface 4 can be flat or have elevations. Furthermore, it may also be possible that instead of the depressions 42 shown, correspondingly shaped elevations 41 are formed on the surface 4. As indicated in FIG. 2C, the surface structure 40 can also have a so-called hierarchical micro-nano structure, that is to say a combination of a microstructure and one
- characteristic sizes of the surface structures 40 shown can be as described above in the general part.
- the shapes and characteristic sizes of the surface structure 40 can be selected such that, in view of the operation with the surface 4 with the
- FIG. 3A shows corresponding recordings of water drops, the number in each case in the top right corner indicating the experiment number # from the table in FIG. 3A and the angle information on the respective right recording side indicating the contact angle which is also shown in the table.
- Embodiments are combined with each other, even if not all combinations are explicitly described.
- Embodiments described alternatively or additionally have further features according to the description in the general part.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018129058.6A DE102018129058A1 (de) | 2018-11-19 | 2018-11-19 | Sensorvorrichtung und Verfahren zur Herstellung einer Sensorvorrichtung |
| PCT/EP2019/081643 WO2020104370A1 (de) | 2018-11-19 | 2019-11-18 | Sensorvorrichtung und verfahren zur herstellung einer sensorvorrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3884251A1 true EP3884251A1 (de) | 2021-09-29 |
Family
ID=68621275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19806175.6A Pending EP3884251A1 (de) | 2018-11-19 | 2019-11-18 | Sensorvorrichtung und verfahren zur herstellung einer sensorvorrichtung |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US12097574B2 (de) |
| EP (1) | EP3884251A1 (de) |
| DE (1) | DE102018129058A1 (de) |
| WO (1) | WO2020104370A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112059407A (zh) * | 2020-09-17 | 2020-12-11 | 苏州快光科技有限公司 | 一种基于深度学习的皮秒超快激光加工系统及方法 |
| DE102022104697A1 (de) | 2022-02-28 | 2023-08-31 | Tdk Electronics Ag | Mediengetrennter Sensor |
| CN116174893B (zh) * | 2022-12-07 | 2026-03-20 | 天津大学 | 一种激光复合加工提高镍钛合金超疏水性的方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021124992A1 (ja) * | 2019-12-19 | 2021-06-24 | 株式会社ブリヂストン | 推定装置、推定方法、プログラム、及び学習モデル生成装置 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1083412A1 (de) * | 1999-09-07 | 2001-03-14 | Endress + Hauser Gmbh + Co. | Vorrichtung zur Bestimmung einer physikalischen Grösse eines flüssigen oder festen Mediums |
| WO2002014804A1 (de) | 2000-08-17 | 2002-02-21 | Vega Grieshaber Kg | Schmutzabweisender und selbstreinigender messensor |
| DE10163567A1 (de) | 2001-12-21 | 2003-07-17 | Endress & Hauser Gmbh & Co Kg | Drucksensor mit hydrophober Beschichtung |
| DE10334238A1 (de) * | 2003-07-28 | 2005-02-24 | Robert Bosch Gmbh | Sensoreinlasskanal |
| JP4739730B2 (ja) | 2004-11-10 | 2011-08-03 | 三菱レイヨン株式会社 | 疎水性多孔質膜用親水化剤、これを用いた疎水性多孔質膜の親水化方法及び検査方法 |
| DE102005028395A1 (de) | 2005-06-20 | 2006-12-28 | Vega Grieshaber Kg | Füllstands- oder Drucksensor mit antiadhäsiver Schicht |
| JP4848904B2 (ja) | 2006-09-13 | 2011-12-28 | 株式会社デンソー | 圧力センサ |
| DE102008026611B4 (de) * | 2008-06-03 | 2013-01-24 | Continental Automotive Gmbh | Drucksensoranordnung |
| US8987632B2 (en) * | 2009-10-09 | 2015-03-24 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Modification of surface energy via direct laser ablative surface patterning |
| JP5418618B2 (ja) | 2011-03-23 | 2014-02-19 | 株式会社デンソー | 圧力センサ |
| ITTO20120753A1 (it) * | 2012-08-30 | 2014-03-01 | St Microelectronics Srl | Dispositivo incapsulato esposto all'aria ambiente e a liquidi e relativo processo di fabbricazione |
| DE102014211856A1 (de) * | 2014-06-20 | 2015-12-24 | Volkswagen Aktiengesellschaft | Drucksensor mit hydrophober Beschichtung |
| DE102014223984A1 (de) * | 2014-11-25 | 2016-05-25 | Robert Bosch Gmbh | Gefrierfeste Drucksensoranordnung, insbesondere als Differentialdrucksensoranordnung fürDieselpartikelfilter |
| WO2017087880A1 (en) * | 2015-11-19 | 2017-05-26 | Colorado State University Research Foundation | Devices and methods for sorting droplets by surface tension |
| DE102017211451B4 (de) | 2017-07-05 | 2019-03-21 | Robert Bosch Gmbh | Mikromechanische Sensorvorrichtung und entsprechendes Herstellungsverfahren |
-
2018
- 2018-11-19 DE DE102018129058.6A patent/DE102018129058A1/de not_active Withdrawn
-
2019
- 2019-11-18 EP EP19806175.6A patent/EP3884251A1/de active Pending
- 2019-11-18 US US17/292,875 patent/US12097574B2/en active Active
- 2019-11-18 WO PCT/EP2019/081643 patent/WO2020104370A1/de not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021124992A1 (ja) * | 2019-12-19 | 2021-06-24 | 株式会社ブリヂストン | 推定装置、推定方法、プログラム、及び学習モデル生成装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018129058A1 (de) | 2020-05-20 |
| US12097574B2 (en) | 2024-09-24 |
| WO2020104370A1 (de) | 2020-05-28 |
| US20210402522A1 (en) | 2021-12-30 |
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