CN107538182B - A kind of sulphur copper rod production method - Google Patents
A kind of sulphur copper rod production method Download PDFInfo
- Publication number
- CN107538182B CN107538182B CN201710708028.4A CN201710708028A CN107538182B CN 107538182 B CN107538182 B CN 107538182B CN 201710708028 A CN201710708028 A CN 201710708028A CN 107538182 B CN107538182 B CN 107538182B
- Authority
- CN
- China
- Prior art keywords
- copper rod
- copper
- continuous
- roll
- casting
- 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
Landscapes
- Metal Rolling (AREA)
- Continuous Casting (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of sulphur copper rod production method, the chemical component of copper rod is sulfur-bearing 0.2-0.5%, phosphorous 0.002-0.005%；0.1-0.15% containing selenium, 0.1-0.15% containing antimony, wherein the ratio of selenium content and the amount containing antimony is 1:1；Using continuous up-casting copper bar, milling, continuous rolling, annealing, drawing, aligning, cutting, the tensile strength of the sulphur copper rod of preparation is greater than 320MPa, elongation percentage is greater than 5%, conductivity is greater than 82%IACS, and stock removal rate is 82% or more of free-cutting brass (copper content 61%, Zn content 36%, lead content 3%).
Description
Technical field
The present invention relates to a kind of production method of nonferrous materials more particularly to a kind of sulphur copper rod production methods.
Background technique
Precise conductive device not only requires have higher electric conductivity, due to complex-shaped, also requires have accurate size, light
Clean surface will carry out greatly machining, therefore material is also required to have excellent machinability.Though fine copper has excellent
Electrical and thermal conductivity performance, but cutting ability is poor, so important conductive devices mostly use sulfur-bearing copper alloy.Retaining the excellent of copper alloy
While good characteristic, conductive and heating conduction is reduced seldom, and conventional method production can be used.
Traditional sulphur copper rod processing method is mainly ingot casting-hot extrusion-pickling-finishing-stretching-finishing etc., tradition
Processing process it is long, energy consumption is high, production efficiency is low.
Summary of the invention
For the above-mentioned technical problem of the prior art, the object of the present invention is to provide a kind of lifes of sulphur copper rod haveing excellent performance
Production method.
In order to achieve the above objectives, the present invention is achieved by the following technical solutions:
A kind of production method of sulphur copper rod, comprising the following steps:
1) continuous up-casting copper bar: melting, Continuous Up casting in smelting apparatus are covered with charcoal and stone in smelting apparatus
Black scale, using traction link seat Continuous Up casting copper bar；The temperature of smelting furnace is 1100 DEG C~1200 DEG C, the temperature of holding furnace
It is 1100 DEG C~1200 DEG C, the diameter of Continuous Up casting copper bar is 12.5 ~ 45mm, and the speed of Continuous Up casting copper bar is
200~700mm/min；Prepare copper bar sulfur-bearing 0.2-0.5% in percentage by weight, phosphorous 0.002-0.005%, 0.1- containing selenium
0.15%, 0.1-0.15% containing antimony, wherein the ratio of selenium content and the amount containing antimony is 1:1；Simultaneously containing silver, titanium, cerium, boron, cobalt, chromium,
Any two kinds of elements in the elements such as nickel, niobium, the content of any two kinds of elements is 0.001~0.003%.
2) milling: the resulting copper bar of step 1) is subjected to milling, the size of copper bar milling is 0.2 ~ 1mm.
3) continuous rolling: being raw material by the resulting copper bar of step 2, rolls copper rod, rolling using the duo mill of multi-frame
Speed 0.15-0.25 meter per second；The general working rate of continuous rolling is greater than 85%；Copper rod is straight after rolling in the continuous rolling step
Diameter out-of-roundness is less than 0.2mm, and using ellipse-circular hole pass schedule, each passage compression ratio 1.1-1.5, multi-frame is individually passed
Dynamic frequency control, each passage breast roller are by each different variable-frequency motor driving, alternating-current variable frequency motor 30KW, roll:
Ф 300mm, roll material Cr12MoV, roll hardness HRC58-60, roll pass roughness are not less than Ra0.1；It is rolling
Lotion cooling and lubrication, flow: 25m are carried out to roll, copper rod in the process3/ h, lotion operating pressure: 2.5MPa, emulsion temperature
Less than 30 DEG C, emulsion concentration 8%.
4) it anneals: being annealed using protective atmosphere furnace for brightness, annealing temperature is 300 ~ 500 DEG C, and soaking time is 6 ~ 10
Hour, the crystallite dimension of copper rod is 0.011 ~ 0.02mm after annealing.
5) copper rod drawing: is subjected to drawing deformation, deformation coefficient 1.15-1.5；The speed of drawing deformation is less than 8m/
Min, emulsion or vegetable oil are as Lubrication Solution for Drawing.
6) it aligns: copper rod is subjected to straightening deformation, deformation coefficient 1.01-1.05；Degree is twisted in the torsion of copper rod after straightening deformation
Every meter is not more than 0.5mm, and every meter of flatness of copper rod is not more than 1mm, and every meter of directly degree of copper rod is not more than 0.5mm.
7) it cuts: copper rod is cut.
The spies such as a kind of sulphur copper rod production method of offer of the invention, which has, to be had excellent performance, and process flow is short, efficient, energy saving
Point, the tensile strength of the copper rod of preparation are greater than 320MPa, and elongation percentage is greater than 5%, and conductivity is greater than 82%IACS, and stock removal rate is easily to cut
Cut 82% or more of brass (copper content 61%, Zn content 36%, lead content 3%).
Specific embodiment
The present invention is further illustrated combined with specific embodiments below, but protection scope of the present invention is not limited to
This.
Example 1
A kind of production method of sulphur copper rod, comprising the following steps:
1) continuous up-casting copper bar: melting, Continuous Up casting in smelting apparatus are covered with charcoal and stone in smelting apparatus
Black scale, using traction link seat Continuous Up casting copper bar；The temperature of smelting furnace is 1100 DEG C, and the temperature of holding furnace is 1100
DEG C, the diameter of continuous up-casting copper bar is 45mm, and the speed of continuous up-casting is 200mm/min；Copper rod sulfur-bearing 0.2%, it is phosphorous
0.002%, contain selenium 0.1%, contains antimony 0.1%；It is containing two kinds of elements, the contents of two kinds of elements such as silver, niobiums simultaneously
0.002%。
2) milling: the resulting copper bar of step 1) is subjected to milling, the size of copper bar milling is 0.5mm.
3) continuous rolling: being raw material by the resulting copper bar of step 2, rolls copper rod, rolling using the duo mill of ten racks
0.15 meter per second of speed；The general working rate 88% of continuous rolling；Copper rod diameter out-of-roundness after being rolled in the continuous rolling step
Less than 0.2mm, using ellipse-circular hole pass schedule, each passage compression ratio 1.5, multi-frame driven separately frequency control, respectively
A passage breast roller is by each different variable-frequency motor driving, alternating-current variable frequency motor 30KW, roll: Ф 300mm, roll material
Matter is Cr12MoV, and roll hardness HRC58-60, roll pass roughness is not less than Ra0.1；During the rolling process to roll, copper
Stick carries out lotion cooling and lubrication, flow: 25m3/ h, lotion operating pressure: 2.5MPa, 29 DEG C of emulsion temperature, emulsion concentration 8%.
4) it anneals: being annealed using protective atmosphere furnace for brightness, annealing temperature is 300 ~ 500 DEG C, and soaking time is 6 ~ 10
Hour, the crystallite dimension of copper rod is 0.011 ~ 0.02mm after annealing.
5) copper rod drawing: is subjected to drawing deformation, deformation coefficient 1.2；The speed 7m/min of drawing deformation, emulsion or
Person's vegetable oil is as Lubrication Solution for Drawing.
6) it aligns: copper rod is subjected to straightening deformation, deformation coefficient 1.02；The torsion of copper rod twists every meter of degree not after straightening deformation
Greater than 0.5mm, every meter of flatness of copper rod is not more than 1mm, and every meter of directly degree of copper rod is not more than 0.5mm.
7) it cuts: copper rod is cut.
A kind of tensile strength of the copper rod of sulphur copper rod production method preparation is greater than 320MPa, and elongation percentage is greater than 5%,
Conductivity is greater than 82%IACS, and stock removal rate is 82% or more of free-cutting brass (copper content 61%, Zn content 36%, lead content 3%).
Example 2
A kind of production method of sulphur copper rod, comprising the following steps:
1) continuous up-casting copper bar: melting, Continuous Up casting in smelting apparatus are covered with charcoal and stone in smelting apparatus
Black scale, using traction link seat Continuous Up casting copper bar；The temperature of smelting furnace is 1100 DEG C, and the temperature of holding furnace is 1100
DEG C, the diameter of continuous up-casting copper bar is 45mm, and the speed of continuous up-casting is 200mm/min；Copper rod sulfur-bearing 0.5%, it is phosphorous
0.005%, contain selenium 0.15%, contain antimony 0.15%, is containing two kinds of elements, the contents of two kinds of elements such as cerium, cobalts simultaneously
0.001%。
2) continuous rolling: being raw material by the resulting copper bar of step 2, rolls copper rod, rolling using the duo mill of ten racks
0.25 meter per second of speed；The general working rate 92% of continuous rolling；Copper rod diameter out-of-roundness after being rolled in the continuous rolling step
Less than 0.2mm, using ellipse-circular hole pass schedule, each passage compression ratio 1.2, multi-frame driven separately frequency control, respectively
A passage breast roller is by each different variable-frequency motor driving, alternating-current variable frequency motor 30KW, roll: Ф 300mm, roll material
Matter is Cr12MoV, and roll hardness HRC58-60, roll pass roughness is not less than Ra0.1；During the rolling process to roll, copper
Stick carries out lotion cooling and lubrication, flow: 25m3/ h, lotion operating pressure: 2.5MPa, 28 DEG C of emulsion temperature, emulsion concentration 8%.
3) it anneals: being annealed using protective atmosphere furnace for brightness, annealing temperature is 300 ~ 500 DEG C, and soaking time is 6 ~ 10
Hour, the crystallite dimension of copper rod is 0.011 ~ 0.02mm after annealing.
4) copper rod drawing: is subjected to drawing deformation, deformation coefficient 1.12；The speed of drawing deformation is less than 8m/min, cream
Change liquid as Lubrication Solution for Drawing.
5) it aligns: copper rod is subjected to straightening deformation, deformation coefficient 1.03；The torsion of copper rod twists every meter of degree not after straightening deformation
Greater than 0.5mm, every meter of flatness of copper rod is not more than 1mm, and every meter of directly degree of copper rod is not more than 0.5mm.
6) it cuts: copper rod is cut.
A kind of tensile strength of the copper rod of sulphur copper rod production method preparation is greater than 320MPa, and elongation percentage is greater than 5%,
Conductivity is greater than 82%IACS, and stock removal rate is 82% or more of free-cutting brass (copper content 61%, Zn content 36%, lead content 3%).
Example 3
A kind of production method of sulphur copper rod, comprising the following steps:
1) continuous up-casting copper bar: melting, Continuous Up casting in smelting apparatus are covered with charcoal and stone in smelting apparatus
Black scale, using traction link seat Continuous Up casting copper bar；The temperature of smelting furnace is 1100 DEG C, and the temperature of holding furnace is 1100
DEG C, the diameter of continuous up-casting copper bar is 45mm, and the speed of continuous up-casting is 200mm/min；Copper rod sulfur-bearing 0.5%, it is phosphorous
0.005%, contain selenium 0.15%, contains antimony 0.15%；It is containing two kinds of elements, the contents of two kinds of elements such as titanium, cobalts simultaneously
0.001%。
2) continuous rolling: being raw material by the resulting copper bar of step 2, rolls copper rod, rolling using the duo mill of ten racks
0.25 meter per second of speed；The general working rate of continuous rolling is greater than 85%；In the continuous rolling step roll after copper rod diameter not
Circularity is less than 0.2mm, using ellipse-circular hole pass schedule, each passage compression ratio 1.5, and multi-frame driven separately frequency conversion tune
Speed, each passage breast roller are by each different variable-frequency motor driving, alternating-current variable frequency motor 30KW, roll: Ф 300mm,
Roll material is Cr12MoV, and roll hardness HRC58-60, roll pass roughness is not less than Ra0.1；It is right during the rolling process
Roll, copper rod carry out lotion cooling and lubrication, flow: 25m3/ h, lotion operating pressure: 2.5MPa, 25 DEG C of emulsion temperature, lotion
Concentration 8%.
3) it anneals: being annealed using protective atmosphere furnace for brightness, annealing temperature is 300 ~ 500 DEG C, and soaking time is 6 ~ 10
Hour, the crystallite dimension of copper rod is 0.011 ~ 0.02mm after annealing.
4) copper rod drawing: is subjected to drawing deformation, deformation coefficient 1.2；The speed of drawing deformation is less than 8m/min, emulsification
Liquid is as Lubrication Solution for Drawing.
5) it cuts: copper rod is cut.
A kind of tensile strength of the copper rod of sulphur copper rod production method preparation is greater than 320MPa, and elongation percentage is greater than 5%,
Conductivity is greater than 82%IACS, and stock removal rate is 82% or more of free-cutting brass (copper content 61%, Zn content 36%, lead content 3%).
Example 4
A kind of production method of sulphur copper rod, comprising the following steps:
1) continuous up-casting copper bar: melting, Continuous Up casting in smelting apparatus are covered with charcoal and stone in smelting apparatus
Black scale, using traction link seat Continuous Up casting copper bar；The temperature of smelting furnace is 1100 DEG C, and the temperature of holding furnace is 1100
DEG C, the diameter of continuous up-casting copper bar is 45mm, and the speed of continuous up-casting is 500mm/min；Copper rod sulfur-bearing 0.2%, it is phosphorous
0.002%, contain selenium 0.1%, contains antimony 0.1%；It is containing two kinds of elements, the contents of two kinds of elements such as cobalt, chromium simultaneously
0.002%。
2) continuous rolling: being raw material by the resulting copper bar of step 2, rolls copper rod, rolling using the duo mill of ten racks
0.20 meter per second of speed；The general working rate of continuous rolling is greater than 85%；In the continuous rolling step roll after copper rod diameter not
Circularity is less than 0.2mm, using ellipse-circular hole pass schedule, each passage compression ratio 1.5, and multi-frame driven separately frequency conversion tune
Speed, each passage breast roller are by each different variable-frequency motor driving, alternating-current variable frequency motor 30KW, roll: Ф 300mm,
Roll material is Cr12MoV, and roll hardness HRC58-60, roll pass roughness is not less than Ra0.1；It is right during the rolling process
Roll, copper rod carry out lotion cooling and lubrication, flow: 25m3/ h, lotion operating pressure: 2.5MPa, 28 DEG C of emulsion temperature, lotion
Concentration 8%.
3) it anneals: being annealed using protective atmosphere furnace for brightness, annealing temperature is 300 ~ 500 DEG C, and soaking time is 6 ~ 10
Hour, the crystallite dimension of copper rod is 0.011 ~ 0.02mm after annealing.
4) copper rod drawing: is subjected to drawing deformation, deformation coefficient 1.15-1.5；The speed of drawing deformation is less than 8m/
Min, emulsion is as Lubrication Solution for Drawing.
5) it cuts: copper rod is cut.
A kind of tensile strength of the copper rod of sulphur copper rod production method preparation is greater than 320MPa, and elongation percentage is greater than 5%,
Conductivity is greater than 82%IACS, and stock removal rate is on 82% or more of free-cutting brass (copper content 61%, Zn content 36%, lead content 3%)
It states embodiment and is only used for illustrating inventive concept of the invention, rather than the restriction to rights protection of the present invention, it is all to utilize this structure
Think of makes a non-material change to the present invention, and should all fall into protection scope of the present invention.
Claims (1)
1. a kind of production method of sulphur copper rod, it is characterised in that: by weight percentage, copper rod sulfur-bearing 0.2-0.5% is phosphorous
0.002-0.005%, 0.1-0.15% containing selenium, 0.1-0.15% containing antimony, wherein the ratio of selenium content and the amount containing antimony is 1:1；Contain simultaneously
There are silver, titanium, cerium, boron, cobalt, chromium, nickel, any two kinds of elements in niobium element, the content of any two kinds of elements is
0.001~0.003%；Its production method the following steps are included:
1) continuous up-casting copper bar: melting, Continuous Up casting in smelting apparatus are covered with charcoal and graphite squama in smelting apparatus
Piece, using traction link seat Continuous Up casting copper bar；The temperature of smelting furnace is 1100 DEG C~1200 DEG C, and the temperature of holding furnace is
1100 DEG C~1200 DEG C, the diameter of continuous up-casting copper bar is 12.5 ~ 45mm, and the speed of continuous up-casting is 200 ~ 700mm/min；
2) milling: the resulting copper bar of step 1) is subjected to milling, the size of copper bar milling is 0.2 ~ 1mm；
3) continuous rolling: being raw material by the resulting copper bar of step 2, rolls copper rod, mill speed using the duo mill of ten racks
0.15-0.25 meter per second；The general working rate of continuous rolling is greater than 85%；In the continuous rolling step roll after copper rod diameter not
Circularity is less than 0.2mm, and using ellipse-circular hole pass schedule, each passage compression ratio 1.1-1.5, multi-frame driven separately becomes
Frequency modulation speed, each passage breast roller are by each different variable-frequency motor driving, alternating-current variable frequency motor 30KW, roll: Ф
300mm, roll material Cr12MoV, roll hardness HRC58-60, roll pass roughness are not less than Ra0.1；It was rolling
Lotion cooling and lubrication, flow: 25m are carried out to roll, copper rod in journey3/ h, lotion operating pressure: 2.5MPa, emulsion temperature are small
In 30 DEG C, emulsion concentration 8%；
4) it anneals: being annealed using protective atmosphere furnace for brightness, annealing temperature is 300 ~ 500 DEG C, and soaking time is 6 ~ 10 hours,
The crystallite dimension of copper rod is 0.011 ~ 0.02mm after annealing；
5) copper rod drawing: is subjected to drawing deformation, deformation coefficient 1.15-1.5；The speed of drawing deformation is less than 8m/min, cream
Change liquid or vegetable oil as Lubrication Solution for Drawing；
6) it aligns: copper rod is subjected to straightening deformation, deformation coefficient 1.01-1.05；Every meter of degree is twisted in the torsion of copper rod after straightening deformation
No more than 0.5mm, every meter of flatness of copper rod is not more than 1mm, and every meter of directly degree of copper rod is not more than 0.5mm；
7) it cuts: copper rod is cut；
A kind of tensile strength of the copper rod of sulphur copper rod production method preparation is greater than 320MPa, and elongation percentage is greater than 5%, conduction
Rate is greater than 82%IACS, and stock removal rate is 82% or more of free-cutting brass, the copper content 61% of the free-cutting brass, Zn content
36%, lead content 3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708028.4A CN107538182B (en) | 2017-08-17 | 2017-08-17 | A kind of sulphur copper rod production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710708028.4A CN107538182B (en) | 2017-08-17 | 2017-08-17 | A kind of sulphur copper rod production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107538182A CN107538182A (en) | 2018-01-05 |
| CN107538182B true CN107538182B (en) | 2019-08-16 |
Family
ID=60957527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710708028.4A Expired - Fee Related CN107538182B (en) | 2017-08-17 | 2017-08-17 | A kind of sulphur copper rod production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107538182B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708510A (en) * | 2009-12-03 | 2010-05-19 | 绍兴市力博电气有限公司 | Processing technology for processing high-purity high-conductivity oxygen-free copper bar |
| CN104593706A (en) * | 2013-10-31 | 2015-05-06 | 宁波金田铜业(集团)股份有限公司 | Cold continuous rolling method of brass wires |
| CN106222477A (en) * | 2016-08-22 | 2016-12-14 | 徐高磊 | A kind of electric automobile charging pile adapter tellurium copper alloy and production technology thereof |
| CN106311788A (en) * | 2016-08-22 | 2017-01-11 | 徐高磊 | Production process of copper-silver alloy profile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7503377B2 (en) * | 2003-02-28 | 2009-03-17 | Alcoa Inc. | Method and apparatus for continuous casting |
-
2017
- 2017-08-17 CN CN201710708028.4A patent/CN107538182B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708510A (en) * | 2009-12-03 | 2010-05-19 | 绍兴市力博电气有限公司 | Processing technology for processing high-purity high-conductivity oxygen-free copper bar |
| CN104593706A (en) * | 2013-10-31 | 2015-05-06 | 宁波金田铜业(集团)股份有限公司 | Cold continuous rolling method of brass wires |
| CN106222477A (en) * | 2016-08-22 | 2016-12-14 | 徐高磊 | A kind of electric automobile charging pile adapter tellurium copper alloy and production technology thereof |
| CN106311788A (en) * | 2016-08-22 | 2017-01-11 | 徐高磊 | Production process of copper-silver alloy profile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107538182A (en) | 2018-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6499159B2 (en) | Copper alloy wire and method for producing the same | |
| CN111687236B (en) | Preparation method of coated alloy wire | |
| KR102233844B1 (en) | Micro grain-texture electrode wire material and preparation method therefor and use thereof | |
| CN104722595B (en) | Fine silver foil that a kind of wide cut is ultra-thin and manufacture method thereof | |
| JP6155923B2 (en) | Method for producing copper-silver alloy wire | |
| CN105170649B (en) | A kind of preparation method of individual layer crystalline substance metal polar thin belt | |
| CN110218898A (en) | A kind of preparation method of Cu-Cr-Zr alloy wire rod | |
| CN104985016A (en) | Wide breadth ultra-thin pure gold foil belt and manufacturing method of wide breadth ultra-thin pure gold foil belt | |
| CN101338392A (en) | Method for producing aluminum alloy medicinal foil by hot-rolling method | |
| CN102660695A (en) | Copper wire and method for preparing shielding copper wire mesh | |
| CN105274399A (en) | Aluminum alloy material for cable conductor and application of material | |
| CN104593706A (en) | Cold continuous rolling method of brass wires | |
| CN111926214A (en) | Free-cutting lead brass bar with excellent cold machining plasticity and preparation method thereof | |
| WO2021259135A1 (en) | High-purity fine platinum wire and preparation method | |
| JP5652741B2 (en) | Copper wire and method for producing the same | |
| JP5467163B1 (en) | Copper alloy plate, heat dissipating electronic component comprising the same, and method for producing copper alloy plate | |
| CN109504865B (en) | High-strength titanium-copper alloy special-shaped wire suitable for conductive elastic component and preparation method thereof | |
| CN107538182B (en) | A kind of sulphur copper rod production method | |
| CN105251804B (en) | A kind of milling method of six square rod of TC6 titanium alloys | |
| CN116790934A (en) | Copper-iron alloy strip for lead frame and preparation method thereof | |
| CN107552587B (en) | A kind of processing technology of magnesium tellurium copper stick | |
| CN107619964B (en) | High-conductivity copper-silver-tin-chromium alloy plate strip and preparation and processing method thereof | |
| JP6141708B2 (en) | Plated copper alloy plate with excellent gloss | |
| CN113265558B (en) | Copper-iron alloy with excellent bending resistance and processing method thereof | |
| CN107497881B (en) | A kind of processing technology of tellurium selenium copper stick |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190723 Address after: 224400 Funing provincial high tech Industrial Development Zone, Jiangsu Province, No. 329 Provincial Highway No. 8 (F) () Applicant after: Jiangsu Weiss Intelligent Technology Co., Ltd. Address before: 462414 Ma Gang Formation 5, Jiujie Town, Wuyang County, Luohe City, Henan Province Applicant before: Xu Gaojie |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190816 Termination date: 20200817 |