CN206997770U - A kind of cold isostatic compaction mould - Google Patents
A kind of cold isostatic compaction mould Download PDFInfo
- Publication number
- CN206997770U CN206997770U CN201720338491.XU CN201720338491U CN206997770U CN 206997770 U CN206997770 U CN 206997770U CN 201720338491 U CN201720338491 U CN 201720338491U CN 206997770 U CN206997770 U CN 206997770U
- Authority
- CN
- China
- Prior art keywords
- mould
- gum cover
- control type
- master mold
- cover plate
- 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
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The utility model provides a kind of cold isostatic compaction mould,Including control type master mold,Mould gum cover,Powder separation layer,Mould flexible fastener bar,Mould hardness bracket,Mould inner cover plate and mould outer cover plate composition,Mould gum cover is put into control type master mold during operation,Powder separation layer is put into mould gum cover again,The sealing of mould inner cover plate is fixed on the intraoral portion in mold glue set upper side with mould flexible fastener bar again,The sealing of mould outer cover plate is fixed on mould flexible fastener bar with mould hardness bracket,It is characterized in that,It is mould gum cover outside powder separation layer,Powder separation layer is fitted tightly on mould gum cover inwall,The outside of mould gum cover is control type master mold,The fitting of mould gum cover is attached on the inwall of control type master mold,Several pod apertures are distributed with control type master mold,By pod apertures to mould gum cover to conducting pressure,It is mould inner cover plate inside mold glue running-on,It is the mould flexible fastener bar of sealing outside mold glue running-on,It is mould outer cover plate outside mould flexible fastener bar,It is mould hardness bracket outside mould outer cover plate.
Description
Technical field
A kind of cold isostatic compaction mould is the utility model is related to, belongs to powder metallurgy forming mold for pressing technology neck
Domain.
Background technology
Isostatic pressing technology be it is a kind of using product in closed pressure vessel it is each to equalization ultra high pressure state under into
The ultrahigh-pressure hydraulic sophisticated equipment of type.Isostatic pressing technology is divided into isostatic cool pressing, Wen Dengjing by temperature height when shaping and consolidation
Three kinds of pressure, high temperature insostatic pressing (HIP) different types.Isostatic pressed operation principle is Pascal's law, i.e., the medium in closed container（Liquid
Or gas）Pressure, can equably it be transmitted to all directions.Existing more than the 70 years history of isostatic pressing technology, is mainly applied initial stage
It is molded in the powder of powder metallurgy；In the past 20 years, isostatic pressing technology be widely used to ceramic casting, atomic energy, instrument manufacture,
Plastics, super high pressure food sterilizing and graphite, ceramics, permanent magnet, high-voltage electromagnetic porcelain vase, bio-pharmaceutical preparation, food fresh keeping, Gao Xing
The fields such as energy material, military project.Cold isostatic compaction technology is at normal temperatures, generally to make thin wall wrap model material with rubber or plastics,
Using liquid as pressure medium, it is mainly used in powder body material shaping, for further sintering, forging or high temperature insostatic pressing (HIP) process provide base
Body.It is 100 ~ 630MPa typically using pressure.
For existing cold isostatic compaction technology more using polyurethane or rubber as mould, mold body has larger thickness
Degree, and without support frame, easily cause the pressurization more difficult control of base substrate size that is uneven, therefore making, it is difficult to accomplish near net-shape
One-shot forming, the workload increase for causing postorder base substrate to be processed；And the product made is mostly pole or hollow bar, shape is simple
It is single.In addition, the cold isostatic compaction in production needs secondary pressurized to handle mostly at present, manufacture craft usually requires pre-molding
Two processes of blank density are improved with isostatic pressed, and are seldom used as a pressing blank, which results in complex process, production
Long flow path, the shortcomings of adding cost of manufacture and be unfavorable for controlling product quality.
Therefore, develop a kind of novel die of suitable cold isostatic compaction technology, be isostatic cool pressing technical field urgently
One of technical problem of solution.
The content of the invention
The purpose of this utility model is to provide a kind of rational in infrastructure, cold isostatic compaction mould easy to operate, can do
To close to dead size one-shot forming, significantly reducing the workload of postorder base substrate processing, while manufacture craft is simplified, improved
Production efficiency.
The utility model provides a kind of cold isostatic compaction mould, including the isolation of control type master mold, mould gum cover, powder
Layer, mould flexible fastener bar, mould hardness bracket, mould inner cover plate and mould outer cover plate composition, by mould gum cover during operation
It is put into control type master mold, then powder separation layer is put into mould gum cover, then it is with mould flexible fastener bar that mould inner cover plate is close
Sealing is scheduled on the intraoral portion in mold glue set upper side, and the sealing of mould outer cover plate is fixed on into mould flexible fastener with mould hardness bracket
On bar, it is characterised in that it is mould gum cover outside powder separation layer, powder separation layer is fitted tightly on mould gum cover inwall,
The outside of mould gum cover is control type master mold, and the fitting of mould gum cover is attached on the inwall of control type master mold, is distributed on control type master mold
There are several pod apertures, be mould inner cover plate by pod apertures to mould gum cover to conducting pressure, inside mold glue running-on, mould
Have outside gum cover mouth for the mould flexible fastener bar of sealing, be mould outer cover plate outside mould flexible fastener bar, mould outer cover plate
Outside is mould hardness bracket.
According to one of the present utility model specific but non-limiting embodiment, mould gum cover is by high tenacity, high pressure resistant
Organic material using integrated artistic shaping be made.
According to one of the present utility model specific but non-limiting embodiment, it by thickness is 1-5mm that mould gum cover, which is,
It is pressure-resistant to be made up of 250MPa ~ 650MPa rubber or its derived product.
According to one of the present utility model specific but non-limiting embodiment, mould gum cover by polyurethane, fluorubber,
Silicon rubber or epichlorohydrin rubber are made.
It is specific but non-limiting embodiment, control type master mold are a rigid cage according to one of the present utility model,
It is made up of high-intensity resin plate and sheet metal according to the shape welding of institute's pressing blank, the inwall process polishing of control type master mold,
Polishing.
According to one of the present utility model specific but non-limiting embodiment, high-intensity resin plate is that compression strength is big
In 650MPa thermoplastic articles；Sheet metal is the stainless steel materials or aluminum alloy plate materials for being not easy to be corroded.
According to one of the present utility model specific but non-limiting embodiment, control type master mold is by polyvinyl chloride (PVC
) resin plate or polyethylene (PE) resin plate or polypropylene (PP) resin plate be made.
According to one of the present utility model specific but non-limiting embodiment, the thickness of control type master mold is 1 ~ 10mm's
Sheet material with holes.
According to one of the present utility model specific but non-limiting embodiment, in the section bar junction of control type master mold and
Several pod apertures are opened on section bar curved surface.
According to one of the present utility model specific but non-limiting embodiment, the shape of pod apertures is a diameter of Φ 1-
10mm cylinder, cloth hole density are 1-20/cm2。
According to one of the present utility model specific but non-limiting embodiment, powder separation layer is by polyethylene（PE）Film
Or nylon membrane is made.
According to one of the present utility model specific but non-limiting embodiment, powder separation layer be thickness 0.05 ~
0.5mm film.
According to one of the present utility model specific but non-limiting embodiment, mould inner cover plate is by high-strength stainless steel
Sheet material or high-strength aluminium alloy plate material are made, and mould inner cover plate needs are polished, polishing.
It is specific but non-limiting embodiment, mould inner cover plate are 10 ~ 50mm of thickness according to one of the present utility model
Sheet material.
According to one of the present utility model specific but non-limiting embodiment, mould flexible fastener bar is in bracket
Footpath is equal to the annulus of mould inner cover plate external diameter.
According to one of the present utility model specific but non-limiting embodiment, mould flexible fastener bar by polyurethane,
Fluorubber, silicon rubber or epichlorohydrin rubber are made.
According to one of the present utility model specific but non-limiting embodiment, the width and mould of mould flexible fastener bar
The thickness for having inner cover plate is equal.
According to one of the present utility model specific but non-limiting embodiment, the thickness of mould flexible fastener bar for 1 ~
10mm。
According to one of the present utility model specific but non-limiting embodiment, mould outer cover plate is by polyurethane, fluorine rubber
Glue, silicon rubber or epichlorohydrin rubber are made.
According to one of the present utility model specific but non-limiting embodiment, the thickness of mould outer cover plate for 5 ~
20mm。
According to one of the present utility model specific but non-limiting embodiment, mould hardness bracket be high intensity not
Become rusty steel Quick fastening bar.
It is specific but non-limiting embodiment, mould hardness bracket are quick clip according to one of the present utility model
Tool.
The beneficial effects of the utility model are mainly reflected in.
1st, cold isostatic compaction mould of the present utility model adds a rigid cage in the outside of mould gum cover, that is, controls
Type master mold, the flowing of powder is controlled using mould gum cover, the shape and size of institute's pressing blank are controlled using rigid cage, from
And original pre-molding is improved into two processes of blank density with isostatic pressed and is combined into one, not only improve production efficiency but also ensured
Base substrate qualification rate, while greatly reduce the workload of base substrate postorder processing.
2nd, the utility model opens several pod apertures, by leading according to the pattern of institute's pressing blank on control type master mold
Discharge orifice is to mould gum cover to conducting pressure, and so as to ensure that, the shape and dimensional accuracy of pressing blank, ensure that base substrate
Near net-shape one-shot forming, reach the small requirement of base substrate post-production surplus.
3rd, the utility model isolates powder and mould gum cover using powder separation layer, can improve the mold use life-span,
Damage of the powder to mould gum cover is reduced, mould flexible fastener bar is tentatively fastened mold exterior, protects mould gum cover
Collar extension.
4th, the utility model employs two layers of sealing structure of mould inner cover plate and mould outer cover plate, is effectively guaranteed pressure
Process, prevent pilot liquid from entering internal, compacted products quality is more secure.
Brief description of the drawings
Fig. 1 is the sectional view of cold isostatic compaction mould of the present utility model.
Embodiment
The utility model is further illustrated provided hereinafter specific embodiment and with reference to accompanying drawing, but the utility model is not
It is only limited to following embodiment.
As shown in figure 1, cold isostatic compaction mould of the present utility model is a kind of compound die manufactured using multiple material
Tool, including control type master mold 100, mould gum cover 101, powder separation layer 102, mould inner cover plate 120, mould outer cover plate 121, mould
Flexible fastener bar 111, mould hardness bracket 110, several pod apertures 99, powder separation layer is distributed with control type master mold 100
102 inside dress processing powders 130.
Mould gum cover 101 is made of high tenacity, high voltage bearing organic material, is had certain thickness, is mainly used in controlling
The flowing of powder.Specifically, mould gum cover 101 can be by high tenacity, high voltage bearing organic material using integrated artistic shaping system
Into the thickness of mould gum cover 101 is 1 ~ 5mm, and pressure-resistant is 250MPa ~ 650MPa, and mould gum cover 101 is specially polyurethane, fluorine rubber
Glue, silicon rubber or epichlorohydrin rubber are made.Mould gum cover 101 is molded using integrated artistic, so as to avoid because bonding process makes
Mould and caused corner problem.Require that mould gum cover 101 has sufficiently large toughness simultaneously, can guarantee that powder in pressing process
Be not in that the stress distribution caused by mould reason is uneven.It is smooth to be molded rear mold 101 working faces of gum cover, nature mistake at the angle of cut
The functional character such as degree, appearance form, dead size with institute pressing blank is consistent.Powder separation layer 102 is by polyethylene（PE）Film or
Nylon membrane is made, and is the film that thickness is 0.05 ~ 0.5mm, prevents that handle powder 130 contacts with mould gum cover 101.
The outside of powder separation layer 102 is mould gum cover 101, and the fitting of powder separation layer 102 is attached in mould gum cover 101
On wall, the outside of mould gum cover 101 is high intensity, corrosion resistant control type master mold 100, and the fitting of mould gum cover 101 is attached to control type
On the inwall of master mold 100, three is integrally formed.Control type master mold 100 is a rigid cage, by high-intensity resin plate or metallic plate
Material etc. is welded according to the shape of institute's pressing blank, the shape and size of pressing blank for controlling.Wherein, high intensity tree
The thermoplastic articles that compression strength is more than 650MPa may be selected in fat plate, can be specifically to add intensity by technological improvement
The resin plate such as polyvinyl chloride (PVC) resin plate, polyethylene (PE) resin plate or polypropylene (PP) resin plate.Metallic plate
Material may be selected to be not easy the stainless steel materials or aluminum alloy plate materials being corroded.Simultaneously according to institute's pressing blank pattern on control type master mold
Several pod apertures 99 are opened, by pod apertures 99 to mould gum cover 101 to conducting pressure, the shape of pressing blank to ensure
Shape and dimensional accuracy, it ensure that the near net-shape one-shot forming of base substrate.Specifically in the section bar junction of control type master mold or section bar
Open several pod apertures 99 in the positions such as curved surface.The shape of pod apertures 99 can be a diameter of Φ 1-10mm cylinder, cloth hole
Density can be 1-20/cm2.For the inwall of control type master mold 100 by polishing, polishing, guarantee dies cavity wall is smooth, suitable
Freely, excessively naturally, the functional character such as appearance form, dead size with institute pressing blank is consistent at the angle of cut.
The sealing of mould inner cover plate 120 is fixed on inside the upper port of mould gum cover 101 with sealing device during operation, mold glue
Cover 101 upper port outside mould flexible fastener bars 111 to fasten, mould outer cover plate 121 is wrapped outside mould flexible fastener bar 111
Portion, then mould hardness bracket 110 is fixed on outside mould outer cover plate 121, to prevent the liquid pressure medium of outside from penetrating into
In mould, for example, Fig. 1 carries out sealing fixation using the clamping mold outer cover plate 121 of quick-speed jigs mould hardness bracket 110.Make
When fixation with mould hardness bracket 110, should ensure that can compaction mold outer cover plate 121, try out water-tight to be up to standard.
Other sealing means such as bolt, glue can be used to carry out sealing fixation to mould outer cover plate 121.
During operation, processing powder 130 is injected in powder separation layer 102, is chosen whether to need machinery according to actual conditions
Jolt ramming.After having noted powder, mould inner cover plate 120 is covered, flexible fastener bar 111 is fastened on outside mould gum cover 101, then covers mould
Have outer cover plate 121, and use the compaction mold outer cover plate 121 of mould hardness bracket 110, it is cold to be then placed in progress in cold isostatic press
Isostatic pressing.Go after mould the base substrate pattern that obtains complete, angle linking is smooth, no fillet, lacks material phenomenon, surface pore-free,
Pollution-free, base substrate post-production surplus is small, has reached near net-shape requirement.
The utility model can pressing blank shape as needed, make variously-shaped mould, such as pentagonal prism type, with one heart
Cylindrical type, loop column type, square-outside and round-inside type, square frame-type, square build etc., and then variously-shaped base can be produced
Body, it is not limited solely to pole or hollow bar parison body that prior art generally makes.
Cold isostatic mould provided by the utility model is rational in infrastructure, easy to operate, can bear making pressure and be
250MPa-650MPa cold isostatic compaction, the material of mould inside is protected not weather, it is most important that isostatic cool pressing can be made
Forming technique accomplishes near net-shape one-shot forming, farthest ensure that the one-time formed precision of base substrate, improves production effect
Rate, reduce manufacturing expense.
It the above is only concrete application example of the present utility model, do not form any limit to the scope of protection of the utility model
System.All technical schemes formed using equivalent transformation or equivalent replacement, before the utility model true spirit is not departed from
Put, all fall within the utility model rights protection scope.
Claims (10)
1. a kind of cold isostatic compaction mould, including control type master mold, mould gum cover, powder separation layer, mould flexible fastener bar, mould
Have rigid bracket, mould inner cover plate and mould outer cover plate composition, mould gum cover is put into control type master mold during operation, then by powder
Body separation layer is put into mould gum cover, then the sealing of mould inner cover plate is fixed on into mold glue with mould flexible fastener bar and puts port
Inside, then the sealing of mould outer cover plate is fixed on mould flexible fastener bar with mould hardness bracket, it is characterised in that powder
It is mould gum cover outside separation layer, powder separation layer is fitted tightly on mould gum cover inwall, and the outside of mould gum cover is control type
Master mold, the fitting of mould gum cover are attached on the inwall of control type master mold, several pod apertures are distributed with control type master mold, by leading
For discharge orifice to mould gum cover to conducting pressure, mold glue running-on inside is mould inner cover plate, is sealing outside mold glue running-on
Mould flexible fastener bar, it is mould outer cover plate outside mould flexible fastener bar, is mould hardness bracket outside mould outer cover plate.
2. cold isostatic compaction mould according to claim 1, it is characterised in that mould gum cover is by high tenacity, high pressure resistant
Organic material using integrated artistic shaping be made.
3. cold isostatic compaction mould according to claim 2, it is characterised in that it by thickness is 1-5mm that mould gum cover, which is,
It is pressure-resistant to be made up of 250MPa ~ 650MPa rubber or its derived product.
4. cold isostatic compaction mould according to claim 3, it is characterised in that mould gum cover by polyurethane, fluorubber,
Silicon rubber or epichlorohydrin rubber are made.
5. cold isostatic compaction mould according to claim 1, it is characterised in that control type master mold is a rigid cage,
It is made up of high-intensity resin plate or sheet metal according to the shape welding of institute's pressing blank, the inwall process polishing of control type master mold,
Polishing.
6. cold isostatic compaction mould according to claim 5, it is characterised in that high-intensity resin plate is that compression strength is big
In 650MPa thermoplastic articles；Sheet metal is the stainless steel materials or aluminum alloy plate materials for being not easy to be corroded.
7. cold isostatic compaction mould according to claim 6, it is characterised in that control type master mold is by Corvic
Plate, polyvinyl resin plate or acrylic resin plate are made.
8. cold isostatic compaction mould according to claim 1, it is characterised in that in the section bar junction of control type master mold or
Several pod apertures are opened on section bar curved surface.
9. the cold isostatic compaction mould according to claim 1 or 8, it is characterised in that the shape of pod apertures is a diameter of
Φ 1-10mm cylinder, cloth hole density are 1-20/cm2。
10. cold isostatic compaction mould according to claim 1, it is characterised in that mould hardness bracket is quick clip
Tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720338491.XU CN206997770U (en) | 2017-04-01 | 2017-04-01 | A kind of cold isostatic compaction mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720338491.XU CN206997770U (en) | 2017-04-01 | 2017-04-01 | A kind of cold isostatic compaction mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206997770U true CN206997770U (en) | 2018-02-13 |
Family
ID=61428710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720338491.XU Expired - Fee Related CN206997770U (en) | 2017-04-01 | 2017-04-01 | A kind of cold isostatic compaction mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206997770U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108456337A (en) * | 2018-03-05 | 2018-08-28 | 北京科技大学 | A kind of method that the cold printings of 3D prepare isostatic cool pressing jacket |
| CN109291211A (en) * | 2018-11-21 | 2019-02-01 | 宝鸡文理学院 | A kind of large-size ceramic cold isostatic compaction mould |
| CN113815232A (en) * | 2021-08-31 | 2021-12-21 | 华中科技大学 | Isostatic pressing sheath and isostatic pressing forming method |
| CN113843543A (en) * | 2021-10-11 | 2021-12-28 | 宁波江丰电子材料股份有限公司 | Clamp capable of reducing eccentricity of rotating target and processing method of powder filling sleeve |
| CN114131015A (en) * | 2021-12-13 | 2022-03-04 | 上海交通大学 | Confined powder filling method for preparing configuration composite material |
-
2017
- 2017-04-01 CN CN201720338491.XU patent/CN206997770U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108456337A (en) * | 2018-03-05 | 2018-08-28 | 北京科技大学 | A kind of method that the cold printings of 3D prepare isostatic cool pressing jacket |
| CN108456337B (en) * | 2018-03-05 | 2020-11-20 | 北京科技大学 | Method for preparing cold isostatic pressing sheath through 3D cold printing |
| CN109291211A (en) * | 2018-11-21 | 2019-02-01 | 宝鸡文理学院 | A kind of large-size ceramic cold isostatic compaction mould |
| CN109291211B (en) * | 2018-11-21 | 2024-02-27 | 宝鸡文理学院 | Cold isostatic pressing forming die for large-size ceramic |
| CN113815232A (en) * | 2021-08-31 | 2021-12-21 | 华中科技大学 | Isostatic pressing sheath and isostatic pressing forming method |
| CN113843543A (en) * | 2021-10-11 | 2021-12-28 | 宁波江丰电子材料股份有限公司 | Clamp capable of reducing eccentricity of rotating target and processing method of powder filling sleeve |
| CN113843543B (en) * | 2021-10-11 | 2022-12-23 | 宁波江丰电子材料股份有限公司 | Clamp capable of reducing eccentricity of rotating target and processing method of powder filling sleeve |
| CN114131015A (en) * | 2021-12-13 | 2022-03-04 | 上海交通大学 | Confined powder filling method for preparing configuration composite material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206997770U (en) | A kind of cold isostatic compaction mould | |
| CN106113228A (en) | A kind of wet type cold isostatic mould | |
| CN108453243A (en) | A kind of ceramic-metal composites preparation method | |
| CN101060263B (en) | A method for packaging the stator with vacuum automatic pressure gem | |
| CN109675999A (en) | A kind of curvature mutation sheet cover viscous pressure forming device | |
| CN105903925B (en) | Adjustable annulus casting mould | |
| CN100490105C (en) | Semiconductor chip glue-pouring method and die | |
| CN205415958U (en) | Wet -type cold isostatic pressing mould | |
| CN109014134A (en) | A kind of heat resisting steel volute shell mould stacked box process for suction casting method | |
| US9211660B2 (en) | Adjustable support for preformed mold | |
| CN104525856A (en) | Modeling process of upper box for refrigerator inner liner mold on the basis of V-process casting | |
| CN203737114U (en) | Hollow fiber membrane filter element pouring mold | |
| CN101096050A (en) | Method for manufacturing bottom-covered pressure casting aluminum pot and special production mould therefor | |
| CN113388226B (en) | High-strength impact-resistant polyether-ether-ketone material, preparation method and sealing assembly valve thereof | |
| CN109175058A (en) | A kind of plate semisolid air pressure thixotropic forming method | |
| CN206153536U (en) | Metal pressure casting mould of utensil accurate positioning function | |
| CN211250544U (en) | External isobaric forming die structure | |
| CN209035458U (en) | A kind of moulding cylinder storehouse external cooling device for increasing material manufacturing | |
| CN209062092U (en) | Arenaceous shell core pattern pouring box | |
| CN208682195U (en) | A kind of bonded permanent magnet forming hydraulic press | |
| CN207523053U (en) | RTM mold with screw self-seal device | |
| CN106111935A (en) | A kind of preparation method of reinforced type magnesium yttrium neodymium alloy laminated composite plate | |
| TWI293598B (en) | ||
| CN110722097A (en) | Investment casting profiling mold | |
| CN111001817A (en) | Powder collecting tank for vacuum gas atomization powder preparation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200603 Address after: 210000 room 505, building 2, No.2, Shuanglong street, Qinhuai District, Nanjing, Jiangsu Province Patentee after: Nanjing Jinli New Material Co.,Ltd. Address before: 210022, room 2, building 2, 506 Shuanglong street, Qinhuai District, Jiangsu, Nanjing, China Patentee before: NANJING ZIRAE NEW MATERIAL Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180213 Termination date: 20210401 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |