CN101823605A - Compound groove tank for tanker - Google Patents
Compound groove tank for tanker Download PDFInfo
- Publication number
- CN101823605A CN101823605A CN 201010149630 CN201010149630A CN101823605A CN 101823605 A CN101823605 A CN 101823605A CN 201010149630 CN201010149630 CN 201010149630 CN 201010149630 A CN201010149630 A CN 201010149630A CN 101823605 A CN101823605 A CN 101823605A
- Authority
- CN
- China
- Prior art keywords
- tanker
- polyurethane
- tank
- metal
- compound
- 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.)
- Granted
Links
- 150000001875 compounds Chemical class 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 41
- 229910052751 metal Inorganic materials 0.000 claims abstract description 41
- 229920003225 polyurethane elastomer Polymers 0.000 claims abstract description 27
- 238000005266 casting Methods 0.000 claims abstract description 26
- 229920002635 polyurethane Polymers 0.000 claims description 32
- 239000004814 polyurethane Substances 0.000 claims description 32
- 210000003205 muscle Anatomy 0.000 claims description 16
- 239000002131 composite material Substances 0.000 claims description 10
- 239000000446 fuel Substances 0.000 abstract description 2
- 210000001015 abdomen Anatomy 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 13
- 239000010935 stainless steel Substances 0.000 description 11
- 239000000126 substance Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 230000032258 transport Effects 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000037396 body weight Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000012644 addition polymerization Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to a compound groove tank for a tanker, which comprises a metal tank body at the inner layer. A casting polyurethane elastomer compound layer is at least integrally compounded outside a cylinder body of the metal tank body and an end enclosure, or a casting polyurethane elastomer belly line covers outside the cylinder body of the metal tank body and the end enclosure. The dead weight of the compound tank body can be effectively lightened, therefore, the weight lightened can be used for increasing the product loading capacity. The invention improves the product conveying quantity under the condition of not changing the total tonnage of the tanker, enhances the conveying efficiency, lowers the conveying cost, has low fuel consumption, and is beneficial to environment protection.
Description
Technical field
The present invention relates to a kind of lorry, is a kind of transportation tank car specifically.
Background technology
The tank car that road transports such as oil product, chemical, powder grain material, bulk cement are used is made up of the groove jar 3 that draws headstock 1, vehicle frame 2 and be contained on the vehicle frame 2 as shown in Figure 1 usually.No matter be road transport tank car or railway transportation tank trucks, the tank body of its groove jar 3 comprises cylindrical shell 32, end socket 34, manhole 31, adapter 33, overside port.At present tank body is generally metal material, and some is also according to the corrosion beharvior liner organic or inorganic material of the chemical of saving, the corrosion tank to prevent chemical and metal can direct contact.
The gross tonnage of highway vehicle lade has criteria limit, and overweight transportation is the hazardous act that laws and regulations are forbidden.Yet under the limited prerequisite of gross tonnage, the clean carrying capacity of lorry is relevant with the deadweight of vehicle, will reduce from great corresponding carrying capacity, so conveying efficiency is low, and the Product transport cost is higher.
For tank car, the deadweight of metal can also is considerable, if can effectively reduce tank body weight, just the tank body weight that reduces can be converted into cargo capacity, thereby increase the transport capacity of tank car.
In addition, scratch or collision case when taking place in the groove jar of tank car, breaking appears in metallic channel jar sometimes, and the break oil product that causes or the leakage of chemical of groove jar not only can cause direct economic loss, and spontaneously inflammable oil product, poisonous and harmful chemical also can cause serious environmental problem.And metal is as the good conductor of heat, and heat transfer rate is fast; for low boiling oil product or chemical, the groove jar is shined upon in transportation, and temperature of charge raises too fast in jar; also therefore danger close also wants frequent water to give the cooling of groove jar in summer in the transportation usually.
Polyurethane is to be formed by organic diisocyanate or polyisocyanates and dihydroxyl or polyol addition polymerization.By changing raw material type and composition, can change product form and performance thereof significantly, obtain from softness to hard final products.
Casting type polyurethane elastomer is a kind of as polyurethane, and not only proportion is little, and has following characteristics:
1, the resistance to abrasion casting type polyurethane elastomer has outstanding wear resisting property, therefore in the serious occasion of wear problem a lot of important use is arranged.
2, stress/strain performance polyurethane elastomer has higher modulus, and high-tensile and these performances of high extensibility make the polyurethane part of cast have good toughness and durability.
3, the compression performance casting type polyurethane elastomer is compared with the cooresponding ordinary rubber of hardness, has much higher load-carrying capacity.This high bearing capacity combines with excellent abrasive and toughness and makes polyurethane very outstanding in the advantage of application facet such as industrial solid tyre and industrial roller.
4, the peel strength casting type polyurethane elastomer is preponderated far beyond traditional rubber in this respect.
5, the fuel resistance polyurethane elastomer has splendid resistivity to the influence of many environment.Its stability in oils and solvent will be good than common rubber many.
Owing to have above-mentioned premium properties, casting type polyurethane elastomer to be used for making fields such as roller, solid tyre, shoe machine accessory, sports goods more.
Summary of the invention
Purpose of the present invention just is to provide a kind of later-model tank of tank car, and the more traditional metallic channel jar of this tank of tank car is compared from heavy and light, therefore makes that the carrying capacity of this tank car is bigger.
The present invention adopts following technical scheme: a kind of compound groove tank for tanker, the metal can that comprises internal layer, at least integral body is compounded with the polyurethane composite bed outside the cylindrical shell of described metal can and end socket, and perhaps shrouding outside the cylindrical shell of described metal can and end socket has polyurethane muscle net.
The cylindrical shell of described metal can and end socket outside face are welded with or one-body molded metal net shaped reinforced rib are arranged, described polyurethane muscle net is compounded in outside the described reinforced rib, so that polyurethane muscle net can combine with metal can firmly, phenomenon can not appear peeling off, and, also reduce metal cylinder and end socket wall thickness to a certain extent by metal net shaped reinforced rib increase metal can intensity.
Further, on metal net shaped reinforced rib, also be provided with groove or through hole, make to be cast in its exterior polyurethane and reinforced rib forms concavo-convex mosaic texture, so that both mortise.
Therefore described polyurethane muscle net can be integrated poured forming, but for large tank, integrated poured difficulty of construction is bigger, and described polyurethane muscle net can also be to be linked together by many strip polyurethane to form, so that processing.
Same reason, scheme for the outer whole compound polyurethane composite bed of the cylindrical shell of metal can and end socket, the outer whole compound polyurethane composite bed of the cylindrical shell of described metal can and end socket, can be on metal can integrated poured forming, also can be that the polyurethane by the cast of polylith sheet connects into.
Groove jar on the tank car can be one, but for the large-tonnage tank car, its groove jar is longer, in order to strengthen the non-deformability of whole tank body, described tank body middle part can be welded with dividing plate and be separated into the interior bin that communicates or isolate, or pull bar is set, dividing plate from interior pulling with support, is difficult for deformation in compression with cylinder inboard wall.Also can be combined into big tank body by a plurality of independently little tank bodies uses, adjacent little tank body need not connect, or it is hinged or flexibly connect, thisly can reduce stress that vibration, bending, impact etc. produce transmission and destruction in whole length of tank direction by the canister erection method, particularly because outside face has casting type polyurethane elastomer, also can avoid collision and wearing and tearing between the adjacent canister, and because the smaller volume of whole groove jar, so resistance to compression and non-deformability are better.
The preferred casting type polyurethane elastomer of described polyurethane makes full use of the high advantage of its intensity.
According to the character of dress chemical, described metal can inside face also is lined with inorganic or organic, alloy preservative coat.
This compound groove tank for tanker of the present invention, with polyurethane particularly the casting type polyurethane elastomer material be used to make the groove jar, make full use of the characteristic that its proportion is little, intensity is good, this groove jar that obtains of way of migrating has following advantage:
(1) casting type polyurethane elastomer has good peel strength and strain property, be applied to tank of tank car, guaranteeing under the satisfactory prerequisite of groove jar intensity, thereby the wall thickness that can reduce metal can reduces metal consumption, it is more much smaller than important and because polyurethane is compared with metal, so the deadweight of this compound tank body can effectively alleviate, thereby this part weight can be used to increase the product carrying capacity, do not changing raising product product transportation volume under the tank car gross tonnage situation, therefore can improve conveying efficiency, reduce traffic cost, also help environmental protection.
(2) casting type polyurethane elastomer is owing to have the good and elasticity preferably of resistance to abrasion; compound casting type polyurethane elastomer outside the groove jar of tank car; also have the shock absorbing effect, effectively protect in-to-in metallic channel jar, avoid or reduce owing to scratch or tank body cracking that collision causes.Employing even the metal can cracking can directly not leak in the environment yet, has improved safety performance at the elastomeric full composite structure of metal can whole outer surface composite casting type polyurethane.
(3) the polyurethane coefficient of heat transmission is low, is compounded in metal can and has heat-blocking action outward, can reduce the temperature rise rate of oil product, chemical in the tank body, the danger of avoiding Yin Gaowen to cause.
(4) since groove jar weight lighten, therefore when empty wagons from heavy and light, fuel oil consumption is low; And big owing to the loading amount when lade, the required fuel oil consumption of unit goods transport reduces equally, and is not only energy-conservation, also reduced greenhouse gas emission, helps environmental protection.
This tank car can be used for the tank car of liquid such as transporting Chemicals, oil product, water, gas material, also can be the tank car of materials such as transported powder material or bulk cement.Both the road transport tank car can be, also railway transportation tank trucks can be.
Description of drawings
Fig. 1 is the scheme drawing of chemical or oil product tank car.
Fig. 2 is a kind of compound groove tank structural representation.
Fig. 3-Fig. 5 is the structural representation of muscle net.
The structural representation of the another kind of compound groove tank of Fig. 6.
Fig. 7 and Fig. 8 are the groove jar scheme drawing of different cross section shape.
Fig. 9 is a compound type groove jar scheme drawing.
Figure 10 is a cellular-type groove jar scheme drawing.
The specific embodiment
Below by specific embodiment the present invention is described in further detail, to help understanding content of the present invention.
As shown in Figure 2, it is a kind of embodiment of compound groove tank for tanker, the tank body of internal layer comprises stainless steel cylinder 32 and corrosion-resistant steel end socket 34, shroud the casting type polyurethane elastomer muscle net 35 that has along the casting type polyurethane elastomer bar formation of length of tank and circumferencial direction at stainless steel cylinder 32 and corrosion-resistant steel end socket 34 outside faces, utilize the high strength of this casting type polyurethane elastomer muscle net 35, guarantee that the intensity of whole groove jar satisfies the requirement of strength of tank of tank car, thereby compare minimizing stainless steel tank body wall thickness with existing traditional stainless steel tank jar, thereby reduce the corrosion-resistant steel consumption, reduce the deadweight of groove jar.
Casting type polyurethane elastomer muscle net can directly shroud, be wrapped in stainless steel cylinder and end socket outside face.
To shown in Figure 5, for avoiding layering occurring peeling off between two kinds of materials, in stainless steel cylinder 32 and the welding of end socket outside face or one-body molded the netted reinforced rib 36 of corrosion-resistant steel arranged, casting type polyurethane elastomer muscle net 35 is compounded in outside the described reinforced rib as Fig. 3.On reinforced rib 36, can be provided with through hole as shown in Figure 4, or be provided with groove as shown in Figure 5, like this when cast casting type polyurethane elastomer muscle net 35, polyurethane material can be filled in the through hole or groove on the reinforced rib 36, make to be cast in its exterior casting type polyurethane elastomer muscle net and reinforced rib forms concavo-convex mosaic texture, can not come off and separate.
As shown in Figure 6, it is another kind of embodiment, metal cylinder 35 and end socket 34 outside face integral body at metal can are compounded with casting type polyurethane elastomer composite bed 37, and promptly the casting type polyurethane elastomer composite bed all coats the end socket and the barrel outer surface of metal can.
Except that corrosion-resistant steel, metal can also can also be lined with organic and inorganic in the metal can inside face or alloy preservative coat 38 with other metallic materials such as aluminum alloys as shown in Figure 6.
The shape of cross section of groove jar can be shapes such as circle shown in Figure 6, approximate round rectangle shown in Figure 7 or ellipse shown in Figure 8.
As shown in Figure 9, for large-tonnage considerable tank truck tank body, be combined into by a plurality of independently tank bodies, each tank body all adopts groove jar structure of the present invention.
Can also at the tank body middle part dividing plate 39 or pull bar be arranged as shown in figure 10, whole big tank body is separated into the interior bin that communicates or isolate.Owing to the effect of dividing plate or pull bar, also strengthened the intensity and the non-deformability of whole tank body.
The thickness of the casting type polyurethane elastomer of metal can and outside requires to calculate according to the intensity and the pressure design of whole groove jar.
Except that cylindrical shell and end socket, can also be at surface recombination casting type polyurethane elastomer materials such as manhole blind flange, adapters.
Claims (10)
1. compound groove tank for tanker, it is characterized in that: the metal can that comprises internal layer, at least integral body is compounded with the polyurethane composite bed outside the cylindrical shell of described metal can and end socket, and perhaps shrouding outside the cylindrical shell of described metal can and end socket has polyurethane muscle net.
2. compound groove tank for tanker as claimed in claim 1 is characterized in that: the cylindrical shell of described metal can and end socket outside face are welded with or one-body molded metal net shaped reinforced rib are arranged, and described polyurethane muscle net is compounded in outside the described reinforced rib.
3. compound groove tank for tanker as claimed in claim 2 is characterized in that: also be provided with groove or through hole on described metal net shaped reinforced rib, make to be cast in its exterior polyurethane and reinforced rib forms concavo-convex mosaic texture.
4. compound groove tank for tanker as claimed in claim 2 is characterized in that: described polyurethane muscle net is to be linked together by many strip polyurethane to form.
5. compound groove tank for tanker as claimed in claim 2 is characterized in that: described polyurethane muscle net is integrated poured forming.
6. compound groove tank for tanker as claimed in claim 1 is characterized in that: the whole compound polyurethane composite bed of the cylindrical shell of described metal can and end socket outside face is to be connected into by the polyurethane that the polylith sheet is poured into a mould.
7. compound groove tank for tanker as claimed in claim 1 is characterized in that: the outer whole compound polyurethane composite bed of the cylindrical shell of described metal can and end socket, integrated poured forming on metal can.
8. as described compound groove tank for tanker one of in the claim 1 to 7, it is characterized in that: there are dividing plate or pull bar in described tank body middle part.
9. as described compound groove tank for tanker one of in the claim 1 to 7, it is characterized in that: described tank body is one or is combined into by a plurality of independently tank bodies.
10. as described compound groove tank for tanker one of in the claim 1 to 7, it is characterized in that: described polyurethane is casting type polyurethane elastomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010149630 CN101823605B (en) | 2010-04-19 | 2010-04-19 | Compound groove tank for tanker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010149630 CN101823605B (en) | 2010-04-19 | 2010-04-19 | Compound groove tank for tanker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101823605A true CN101823605A (en) | 2010-09-08 |
| CN101823605B CN101823605B (en) | 2013-04-17 |
Family
ID=42687821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010149630 Expired - Fee Related CN101823605B (en) | 2010-04-19 | 2010-04-19 | Compound groove tank for tanker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101823605B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848087A (en) * | 2011-06-30 | 2013-01-02 | 五冶集团上海有限公司 | Tank fabricating and welding method |
| CN104972272A (en) * | 2015-05-26 | 2015-10-14 | 扬中市第一蝶阀厂有限公司 | Leakage-proof valve production process |
| CN116293396A (en) * | 2023-03-31 | 2023-06-23 | 一汽解放汽车有限公司 | Oval LNG gas cylinder |
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|---|---|---|---|---|
| US3577932A (en) * | 1969-03-25 | 1971-05-11 | Acf Ind Inc | Exterior cover enclosing hopper gate and actuating mechanism |
| CN2083141U (en) * | 1990-10-23 | 1991-08-21 | 武汉工业大学 | New-type tank made of glass fibre reinforced plastic |
| CN1449974A (en) * | 2003-05-16 | 2003-10-22 | 徐杰 | Quick assembling jar |
| CN2622122Y (en) * | 2003-05-29 | 2004-06-30 | 于海铭 | Anti-static oil-storage tank made of glass fiber reinforced plastic |
| CN1597407A (en) * | 2004-09-03 | 2005-03-23 | 一汽山东汽车改装厂 | Acidic corrosion liquid transpoatation tank truck |
| CN2703725Y (en) * | 2004-05-20 | 2005-06-08 | 沈阳防锈包装材料有限责任公司 | Plastic end-protection plate |
| CN1686766A (en) * | 2005-03-26 | 2005-10-26 | 杭新宇 | Steel net plastic composite structured trough tank and its roll moulding shaping technology |
| CN2858564Y (en) * | 2006-01-01 | 2007-01-17 | 刘志明 | Multipurpose bulk cement tank |
| CN2880741Y (en) * | 2005-12-09 | 2007-03-21 | 自贡鸿鹤化工股份有限公司 | Container for conveying liquid article |
| CN201023895Y (en) * | 2007-03-29 | 2008-02-20 | 杨程华 | Metal tank for can-type vehicle |
| CN201049821Y (en) * | 2007-05-13 | 2008-04-23 | 淄博信源玻璃钢有限公司 | Glass reinforced plastics composite material bunker |
| CN101607427A (en) * | 2009-07-27 | 2009-12-23 | 浙江省天台祥和实业有限公司 | The structural improvement of polyurethane elastomer casting machine |
-
2010
- 2010-04-19 CN CN 201010149630 patent/CN101823605B/en not_active Expired - Fee Related
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3577932A (en) * | 1969-03-25 | 1971-05-11 | Acf Ind Inc | Exterior cover enclosing hopper gate and actuating mechanism |
| CN2083141U (en) * | 1990-10-23 | 1991-08-21 | 武汉工业大学 | New-type tank made of glass fibre reinforced plastic |
| CN1449974A (en) * | 2003-05-16 | 2003-10-22 | 徐杰 | Quick assembling jar |
| CN2622122Y (en) * | 2003-05-29 | 2004-06-30 | 于海铭 | Anti-static oil-storage tank made of glass fiber reinforced plastic |
| CN2703725Y (en) * | 2004-05-20 | 2005-06-08 | 沈阳防锈包装材料有限责任公司 | Plastic end-protection plate |
| CN1597407A (en) * | 2004-09-03 | 2005-03-23 | 一汽山东汽车改装厂 | Acidic corrosion liquid transpoatation tank truck |
| CN1686766A (en) * | 2005-03-26 | 2005-10-26 | 杭新宇 | Steel net plastic composite structured trough tank and its roll moulding shaping technology |
| CN2880741Y (en) * | 2005-12-09 | 2007-03-21 | 自贡鸿鹤化工股份有限公司 | Container for conveying liquid article |
| CN2858564Y (en) * | 2006-01-01 | 2007-01-17 | 刘志明 | Multipurpose bulk cement tank |
| CN201023895Y (en) * | 2007-03-29 | 2008-02-20 | 杨程华 | Metal tank for can-type vehicle |
| CN201049821Y (en) * | 2007-05-13 | 2008-04-23 | 淄博信源玻璃钢有限公司 | Glass reinforced plastics composite material bunker |
| CN101607427A (en) * | 2009-07-27 | 2009-12-23 | 浙江省天台祥和实业有限公司 | The structural improvement of polyurethane elastomer casting machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848087A (en) * | 2011-06-30 | 2013-01-02 | 五冶集团上海有限公司 | Tank fabricating and welding method |
| CN104972272A (en) * | 2015-05-26 | 2015-10-14 | 扬中市第一蝶阀厂有限公司 | Leakage-proof valve production process |
| CN116293396A (en) * | 2023-03-31 | 2023-06-23 | 一汽解放汽车有限公司 | Oval LNG gas cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101823605B (en) | 2013-04-17 |
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Effective date of registration: 20160225 Address after: Xinsha Road, Huaiyin District of Ji'nan city of Shandong Province, No. 20 250118 Patentee after: Shandong junengda Purui technology development Limited by Share Ltd Address before: 014032 No. 10, No. 13-15, 2, liberty Road, Qingshan District, the Inner Mongolia Autonomous Region, Baotou Patentee before: Zhang Yongsheng |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20190419 |
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| CF01 | Termination of patent right due to non-payment of annual fee |