CN107248698B - A kind of resistor type spark plug - Google Patents
A kind of resistor type spark plug Download PDFInfo
- Publication number
- CN107248698B CN107248698B CN201710499575.6A CN201710499575A CN107248698B CN 107248698 B CN107248698 B CN 107248698B CN 201710499575 A CN201710499575 A CN 201710499575A CN 107248698 B CN107248698 B CN 107248698B
- Authority
- CN
- China
- Prior art keywords
- insulator
- quartz glass
- electrode
- spark plug
- type spark
- 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.)
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- 239000012212 insulator Substances 0.000 claims abstract description 89
- 239000000919 ceramic Substances 0.000 claims abstract description 30
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000003471 anti-radiation Effects 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims abstract description 5
- 238000005245 sintering Methods 0.000 claims abstract description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 25
- 239000011248 coating agent Substances 0.000 claims description 17
- 238000000576 coating method Methods 0.000 claims description 17
- 239000000565 sealant Substances 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 19
- 230000005855 radiation Effects 0.000 description 7
- 238000003466 welding Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000009278 visceral effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/02—Details
- H01T13/04—Means providing electrical connection to sparking plugs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/02—Details
- H01T13/14—Means for self-cleaning
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
- H01T13/34—Sparking plugs characterised by features of the electrodes or insulation characterised by the mounting of electrodes in insulation, e.g. by embedding
Landscapes
- Spark Plugs (AREA)
Abstract
A kind of resistor type spark plug is mainly made of main metal fixture, insulator, lateral electrode, central electrode, current-limiting resistance and terminal electrode etc..Insulator is made of quartz glass or is grouped as by part on the insulator of quartz glass and the insulator lower part of insulating ceramics.The upper end outer diameter of insulator is equal to the internal diameter of main metal fixture installation threaded portion, and the upper surface of part is provided with annular projection on insulator or insulator, and the tip portion of central electrode is in partial ellipsoids.When insulator is made of quartz glass, current-limiting resistance is formed by ceramic cylinder and resistance powder sintering.When insulator is made of two parts above and below insulator, current-limiting resistance selects film resistor.The upper part upward and downward of lateral electrode flattens, and the upper end curved surface and center electrode tip most surfaces of insulator coat antiradiation layer.The invention has the advantages that service life can be greatly prolonged.
Description
Technical field
The present invention relates to a kind of electric ignition devices, especially with a kind of resistor type spark plug that the service life is long.
Background technique
The alumina ceramic insulator at the resistor type spark plug sparking end being commonly used is directly exposed to frequent explosion
Among the high temperature of burning, and aluminium oxide ceramics thermal coefficient is larger and about 31W/ (mK).Then, heat is made pottery by aluminium oxide
It is comparatively fast transmitted to terminal electrode end at the sparking end of porcelain insulator.Again because compared with pure quartz glass when aluminium oxide ceramics high temperature
Chemical property be not very stable, the alumina ceramic insulator being wrapped in so as to cause main metal fixture institute because of high temperature and continually
Add sparking high-voltage electricity and easy insulation ag(e)ing, in addition the insulating resistance value of alumina ceramic insulator with the raising of temperature and be in logarithm
Form decline.Cause the resistor type spark plug generally used mainly because the resistance value of alumina ceramic insulator comparatively fast declines in this way
And cannot strike sparks again namely its service life it is shorter and almost at vulnerable part.It is 104836120 B of CN in Authorization Notice No.
A kind of spark plug and a kind of patent of high-pressure ignition wire in, noninductive high voltagehigh frequency resistance selected by current-limiting resistance is unsuitable
The sintering process of current spark plug.
Summary of the invention
In order to overcome the shortcomings of that the resistor type spark plug service life generally used is shorter, the present invention provides a kind of resistor-type
Spark plug, service life are greatly prolonged.
The technical solution adopted by the present invention to solve the technical problems is: the present invention is mainly by main metal fixture, insulator, side
Electrode, central electrode, current-limiting resistance, terminal electrode and antiradiation layer etc. constitute, wherein insulator only by quartz glass make and
It is formed at or by part on the insulator of quartz glass and the insulator lower part subassembly of insulating ceramics.The quartz glass,
The pure quartz glass for preferably dioxide-containing silica being selected to be greater than 99.9 ﹪, the pure quartz glass preferably select transparent height
Pure quartz glass.Because pure quartz glass can be used for a long time at 1200 DEG C, softening temperature is up to 1730 DEG C, 1000 DEG C or less
Thermal coefficient only have 2 W/ (mK) left and right, thermal expansion coefficient is minimum and can bear thermal shock, mechanical strength better than ceramics, especially
It is that chemically and electrically performance under high temperature is very stable, is fabulous high temperature insulating material.So pure quartz glass insulator
Insulating resistance value can keep stable namely of the invention service life that can be greatly prolonged for a long time at high temperature.It is described
Insulating ceramics preferably selects alumina insulation ceramic.The outer diameter of insulator upper end is equal to the interior of main metal fixture installation threaded portion
Diameter.At least one annular projection is arranged in the upper surface of insulator.The centre section tip portion of central electrode discharge tip is in length
Axial part elliptical face, then the electric discharge top maximum curvature of central electrode and discharging gap it is breakdown before electric-field strength herein
Degree is maximum.
When insulator is only made of the quartz glass, current-limiting resistance is formed by ceramic cylinder and resistance powder sintering, is burnt
Knot integral structure can preferably export downwards the heat inside insulator.The upper and lower side of current-limiting resistance respectively with central electrode
The upper end electrical connection of lower end, terminal electrode.The diameter of ceramic cylinder is slightly smaller than the internal diameter of insulator lower end.Close to ceramic cylinder two
The contour support protrusion of at least three is all uniformly arranged on the cylindrical wall at end on circle, all support protrusion tops places are same
The diameter on cylindrical surface is equal to the internal diameter of insulator lower end.
When insulator on insulator with insulator lower part by being partially grouped as, part and part under insulator on insulator
Interface be located at the insulator middle section of largest outside diameter and radially wave-shaped, the annular projection of most inner lane, which should be, leads
Part under the hot biggish insulator of coefficient, the heat dissipation being conducive to inside insulator in this way.Radiating cap and spring are metal or alloy
, the centre section of radiating cap is in U-shape and its outer diameter is slightly smaller than the internal diameter of part lower end under insulator, and the outer diameter of spring is slightly smaller than
The internal diameter of radiating cap.Radiating cap outer bottom is welded on the lower end surface of central electrode, and one end of spring is welded on the interior bottom of radiating cap
Face center.The welding body of central electrode, radiating cap and spring is fixed on insulator in the central through hole of part with sealant.It dissipates
Hot tap and spring dissipate the heat that central electrode conducts downwards.Current-limiting resistance selects film resistor, and the film resistor preferably selects
With glass glaze film resistance；Film resistor can weaken skin effect.The end cap electrode welding of current-limiting resistance one end is in terminal electrode
The welding body of upper surface, terminal electrode and current-limiting resistance is fixed on the central through hole of part under insulator with heat conductive insulating sealant
It is interior.The lower surface camber of part is together with the top-surface camber of part under insulator electric insulating sealant pressure viscosity on insulator, under spring
End and the upper end of current-limiting resistance are electrically connected.Since following antiradiation layers can reflect most high temperature heat radiations, thermal coefficient
On lesser insulator part again can further it is heat-insulated, under insulator part thermal coefficient again than on insulator part it is big,
To which the temperature of part and current-limiting resistance can drop to relatively low degree under part, insulator on insulator.In this way, insulator
Insulation ag(e)ing delayed significantly namely the present invention can greatly prolong service life.
Lateral electrode upper part upward and downward flattens and increases the horizontal width of lateral electrode upper part, thus central electrode
The lateral electrode upper part that spheroid electric discharge top and horizontal area increase can more preferably partner stick-plate discharge electrode, in turn
Reduce the breakdown voltage between central electrode and lateral electrode, namely sparking one timing of high voltage can increase stick-plate discharging gap away from
From and conducive to igniting.It all fills in gap between insulator and the inner wall and central electrode outer wall of main metal fixture installation threaded portion
Sealant, the ozone change to insulator from outward appearance to inner essence at high temperature generated so as to effectively prevent electrode surface corona discharge
Learn corrosion.At least part surface coating that the upper end curved surface and central electrode of insulator are exposed to outside insulator from bottom to top is anti-
Antiradiation layer is coated with after radiating layer, the upper surface of best main metal fixture and inner rim coating insulating layer.Before coating, preferably will
The insulator of antiradiation layer and the surface of central electrode are coated, and to apply the main metal fixture surface roughening of insulating layer coating.
Antiradiation layer is as made of the antiradiation coating coating that can reflect most of heat radiation, and the antiradiation coating, which is generally selected, to be received
Rice ceramic hollow microballon coating, the nano ceramics cenosphere coating preferably reflect the heat radiation of 80 ﹪ or more.
In the above-mentioned structure setting of the present invention: the thermal coefficient for being wrapped in the insulator of central electrode is smaller, so as to
Electrocardio in being adjusted by adjusting the height of antiradiation layer coated by the surface that central electrode is exposed to outside insulator from bottom to top
The operating temperature on pole electric discharge top.It is unlikely to make its surface temperature because antiradiation layer can directly reflect most heat radiations
Rise it is higher, therefore the temperature of antiradiation layer surface height by cylindrical implosion fry frequency influenced it is smaller.When antiradiation surface layer
When carbon deposit is dirty, more heat radiations can be absorbed because carbon distribution product is dirty, so that the temperature of carbon distribution product visceral layer increases rapidly and reaches self-cleaning.
In addition antiradiation layer is coated with nano paint, therefore its surface inherently has self-cleaning action.It follows that the present invention is to vapour
The compression ratio and revolving speed of oil turbine have than wider adaptation range.
The beneficial effects of the invention are as follows can greatly prolong service life.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Attached drawing 1 is the central cross-sectional view of the embodiment of the present invention one.
Attached drawing 2 is the A-A profile of the embodiment of the present invention one.
Attached drawing 3 is the central cross-sectional view of the embodiment of the present invention two.
1. main metal fixture, 2. insulators, part on 2A. insulator, part under 2B. insulator, 3. lateral electrodes, electrocardio in 4.
Pole, 5. current-limiting resistances, 5A. end cap electrode, 5B. ceramic cylinder, 5B1. support protrusion, 5C. resistance powder, 6. terminal electrodes, 7. is anti-
Radiating layer, 8. insulating layers, 9. radiating caps, 10. springs, 11. heat conductive insulating sealants.
Specific embodiment
In the central cross-sectional view of the embodiment one of attached drawing 1, insulator 2 be made of transparent pure quartz glass,
The upper surface of insulator 2 is provided with an annular projection.The centre section tip portion of 4 discharge tip of central electrode is in long axial
Part elliptical face.The upper part upward and downward of lateral electrode 3 flattens.Antiradiation layer 7 is by that can reflect 80 ﹪ or more heat radiations
Made of the coating of nano aluminium oxide ceramic hollow microballon coating.Insulator 2 and main metal fixture 1 install threaded portion inner wall and in
All fill sealant in gap between the outer wall of heart electrode 4.Current-limiting resistance is sintered by ceramic cylinder 5B and resistance powder 5C.Pottery
The diameter of porcelain cylinder 5B is 0.3 millimeter smaller than the internal diameter of 2 lower end of insulator.All in circle on the cylindrical wall at the both ends ceramic cylinder 5B
On be uniformly arranged 4 0.15 millimeter high of support protrusion 5B1.
In the A-A profile of the embodiment one of attached drawing 2, the big portion in the center of current-limiting resistance made of sintering is ceramics
It is the resistance powder 5C of one layer of 0.15 millimeters thick around cylinder 5B, ceramic cylinder 5B.Current-limiting resistance insulated body 2 is wrapped in, and exhausted
Edge body 2 is wrapped in by main metal fixture 1 again.
In the central cross-sectional view of the embodiment two of attached drawing 3, insulator is by part under part 2A on insulator and insulator
2B composition.Part 2A is made of transparent pure quartz glass on insulator, and part 2B is by alumina insulation ceramics under insulator
It is made.The upper part upward and downward of lateral electrode 3 flattens.9 outer bottom of radiating cap is welded on the lower end surface of central electrode 4, spring 10
One end be welded on radiating cap 9 inner bottom surface center.The welding body of central electrode 4, radiating cap 9 and spring 10 is fixed with sealant
On insulator in the central through hole of part 2A.Current-limiting resistance 5 selects glass glaze film resistance, the end cap electricity of 5 one end of current-limiting resistance
Pole 5A is welded on the upper surface of terminal electrode 6, and the welding body of terminal electrode 6 and current-limiting resistance 5 is solid with heat conductive insulating sealant 11
It is scheduled under insulator in the central through hole of part 2B.On insulator under the lower surface camber and insulator of part 2A part 2B top-surface camber
Together with electric insulating sealant pressure viscosity.Part 2A and main metal fixture 1 install the inner wall and central electrode 4 of threaded portion on insulator
Outer wall between gap all fill sealant.The upper surface of main metal fixture 2 and inner rim coat insulating layer 8.Antiradiation layer 7 is
Made of nano aluminium oxide ceramic hollow microballon coating as that can reflect 80 ﹪ or more heat radiations coats.
Claims (7)
1. a kind of resistor type spark plug, mainly by main metal fixture, insulator, lateral electrode, central electrode, current-limiting resistance and terminal electricity
It is extremely equal to constitute, it is characterized in that: insulator is made by quartz glass or by part on the insulator of quartz glass and insulation
The insulator lower part subassembly of ceramics forms；Insulator upper end outer diameter is equal to the internal diameter of main metal fixture installation threaded portion, center
The centre section tip portion at electrode discharge tip is in long axial part elliptical face；
The upper part upward and downward of lateral electrode flattens；Outside the inner wall and central electrode of insulator and main metal fixture installation threaded portion
Fill sealant in gap between wall；The upper end curved surface and central electrode of insulator are exposed to outside insulator from bottom to top at least one
Part of the surface coats antiradiation layer with antiradiation coating；
When insulator is made of the quartz glass, current-limiting resistance is formed by ceramic cylinder and resistance powder sintering；Ceramic cylinder
Diameter be less than insulator lower end internal diameter, close to ceramic cylinder both ends cylindrical wall at least three is all uniformly arranged on circle
Contour support protrusion, the diameter on the same cylindrical surface is equal to the internal diameter of insulator lower end where all support protrusion tops；
When insulator on insulator with insulator lower part by being partially grouped as, the friendship of part and part under insulator on insulator
Interface is located at insulator middle section and radially wave-shaped；The outer diameter of radiating cap be less than insulator under part lower end it is interior
Diameter, the outer diameter of spring are less than the internal diameter of radiating cap, and radiating cap outer bottom is welded on the lower end surface of central electrode, one end weldering of spring
It connects in the inner bottom surface center of radiating cap；Current-limiting resistance selects film resistor, and one end is welded on the upper surface of terminal electrode；Insulation
The lower surface camber of part is together with the top-surface camber of part under insulator electric insulating sealant pressure viscosity on body, the lower end of spring and current limliting
The upper end of resistance is electrically connected.
2. a kind of resistor type spark plug according to claim 1, it is characterized in that: the film resistor selects glass glaze film electricity
Resistance.
3. a kind of resistor type spark plug according to claim 1, it is characterized in that: the antiradiation coating selection nano ceramics
Cenosphere coating.
4. a kind of resistor type spark plug according to claim 1, it is characterized in that: the quartz glass selects silica to contain
Amount is greater than the pure quartz glass of 99.9 ﹪.
5. a kind of resistor type spark plug according to claim 1, it is characterized in that: the insulating ceramics selects alumina insulation
Ceramics.
6. a kind of resistor type spark plug according to claim 3, it is characterized in that: the nano ceramics cenosphere coating selects
With nano aluminium oxide ceramic hollow microballon coating.
7. a kind of resistor type spark plug according to claim 4, it is characterized in that: the pure quartz glass select it is transparent
Pure quartz glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710499575.6A CN107248698B (en) | 2017-06-29 | 2017-06-29 | A kind of resistor type spark plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710499575.6A CN107248698B (en) | 2017-06-29 | 2017-06-29 | A kind of resistor type spark plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107248698A CN107248698A (en) | 2017-10-13 |
| CN107248698B true CN107248698B (en) | 2019-01-01 |
Family
ID=60013575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710499575.6A Active CN107248698B (en) | 2017-06-29 | 2017-06-29 | A kind of resistor type spark plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107248698B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681467A (en) * | 2017-11-22 | 2018-02-09 | 宋天顺 | A kind of resistor type spark plug |
| CN109638651A (en) * | 2019-01-28 | 2019-04-16 | 宋天顺 | A kind of resistor type spark plug |
| CN111641112B (en) * | 2020-04-20 | 2021-08-03 | 潍柴火炬科技股份有限公司 | Method for reducing contact resistance of spark plug wiring terminal and spark plug |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87103738A (en) * | 1987-05-29 | 1988-02-03 | 门晓光 | Semi-plastic casting fuel-economizing spark plug |
| DE102009055397A1 (en) * | 2009-12-30 | 2011-07-07 | Robert Bosch GmbH, 70469 | Ceramic insulator for use in spark plug in direct injection engine, has UV-protection layer absorbing UV-radiation and comprising thickness that ranges from forty to sixty micrometers, where insulator is designed based on aluminum oxide |
| CN102856792B (en) * | 2012-09-10 | 2014-03-26 | 株洲湘火炬火花塞有限责任公司 | Composite alumina insulator spark plug and manufacturing method thereof |
| DE102014210922A1 (en) * | 2014-06-06 | 2015-12-17 | Ford Global Technologies, Llc | Method for producing a spark plug for an internal combustion engine and spark plug for an internal combustion engine |
| MX2017009710A (en) * | 2015-01-29 | 2018-04-30 | Fram Group Ip Llc | Spark plug insulator having an anti-fouling coating and methods for minimizing fouling. |
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2017
- 2017-06-29 CN CN201710499575.6A patent/CN107248698B/en active Active
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| CN107248698A (en) | 2017-10-13 |
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| CB02 | Change of applicant information |
Address after: 450000 Henan Province Zhengzhou Central Plains District West Third Ring 149 National University Science Park (East) Innovation Park Building 2 A Henan Public Examination Education Song Yibo Applicant after: Song Tianshun Address before: 473500 Henan Nanyang Xinye Xin Dian town center school song Lai Road transfer Applicant before: Song Tianshun |
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Effective date of registration: 20200728 Address after: 221300 Tiefu Street, Tiefu Town, Pizhou City, Jiangsu Province (Cultural Center) Patentee after: PIZHOU TIEFU JIULONG PUBLIC SERVICE Co.,Ltd. Address before: 450000 A, block 2, building 2, innovation park, National Science and Technology Park (East District), 149 West Third Ring Road, Zhongyuan District, Zhengzhou, Henan. Patentee before: Song Tianshun |
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Effective date of registration: 20201216 Address after: 215600 station 0023, 20th floor, building A-1, shazhouhu science and Technology Innovation Park, Huachang Road, yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province (cluster registration) Patentee after: Suzhou qicaifeng data application Co.,Ltd. Address before: Tiefu Street (Cultural Center), Tiefu Town, Pizhou City, Xuzhou City, Jiangsu Province Patentee before: PIZHOU TIEFU JIULONG PUBLIC SERVICE Co.,Ltd. |
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Effective date of registration: 20230922 Address after: 315400 Huanghu Village, Low Tang Street, Yuyao City, Ningbo City, Zhejiang Province Patentee after: Ningbo Delco Spark Plug Manufacturing Co.,Ltd. Address before: 215600 station 0023, 20th floor, building A-1, shazhouhu science and Technology Innovation Park, Huachang Road, yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province (cluster registration) Patentee before: Suzhou qicaifeng data application Co.,Ltd. |
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