CN106719286A - Heater and the aquarium using heater - Google Patents
Heater and the aquarium using heater Download PDFInfo
- Publication number
- CN106719286A CN106719286A CN201611242756.2A CN201611242756A CN106719286A CN 106719286 A CN106719286 A CN 106719286A CN 201611242756 A CN201611242756 A CN 201611242756A CN 106719286 A CN106719286 A CN 106719286A
- Authority
- CN
- China
- Prior art keywords
- heat
- electric insulation
- conduction
- layer
- insulation shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/06—Arrangements for heating or lighting in, or attached to, receptacles for live fish
- A01K63/065—Heating or cooling devices
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/003—Aquaria; Terraria
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/206—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/302—Conductive
Abstract
A kind of heater, it includes heat-conduction electric insulation shell, the heat-conduction electric insulation shell has the outer surface for heated liquid contact heat-exchanging, heat conduction middle level, it is arranged in heat-conduction electric insulation shell and is close to heat-conduction electric insulation inner surface of outer cover, printing heating layer, it is located in heat-conduction electric insulation shell, and the printing heating layer is electrically insulated layer sandwiched or parcel；Electric insulation layer described in the sandwiched of the heat conduction middle level, the heat-conduction electric insulation shell pyroconductivity is less than the heat conduction middle level, so that the accumulation of heat of heat-conduction electric insulation shell and comprehensive even warm transmission.It has that sound construction is reliable, simple and practical, cost of manufacture is cheap, highly versatile, using it is wide the features such as, led with reaching heat heat conduction, thermostatic control is accurate, safe and reliable, electricity separation, energy-conserving and environment-protective, durable in use and other effects.Therefore, it technically, economically has prominent advantage with practical function aspect.
Description
【Technical field】
The present invention relates to a kind of heater and the aquarium using heater.
【Background technology】
The mode of current electrical heating liquid has various, and electrothermal tube, infrared tube, optical wave tube etc. are specifically applied to water receiver
To security in heating, heat conduction uniformly requires of a relatively high, such as aquarium or constant temperature requirement applications higher, and existing
Heating and heat conduction structure and mode can not meet requirement.
Therefore, we have developed a kind of heater and the aquarium using heater.
【The content of the invention】
Purpose of the present invention technical problem to be solved is to provide for a kind of heater and the aquarium using heater,
It has that sound construction is reliable, simple and practical, cost of manufacture is cheap, highly versatile, using it is wide the features such as, to reach heat heat conduction
Lead, thermostatic control is accurate, safe and reliable, electricity separation, energy-conserving and environment-protective, durable in use and other effects.
To achieve these goals, the technical solution adopted by the present invention：A kind of heater, it includes：
Heat-conduction electric insulation shell, the heat-conduction electric insulation shell has the outer surface for heated liquid contact heat-exchanging；
Heat conduction middle level, it is arranged in heat-conduction electric insulation shell and is close to heat-conduction electric insulation inner surface of outer cover；
Printing heating layer, it is located in heat-conduction electric insulation shell, and the printing heating layer is electrically insulated layer sandwiched or parcel；It is described to lead
Hanker electric insulation layer described in layer sandwiched, the heat-conduction electric insulation shell pyroconductivity is less than the heat conduction middle level, so that heat conduction is electric
Insulation crust accumulation of heat and comprehensive even warm transmission.
In one or more embodiments of the invention, the heat-conduction electric insulation shell is made of thermostable heat-conductive plastics；Institute
It is printing heating circuit to state printing heating layer；The heat conduction middle level is made up of aluminium/aluminum alloy materials.
In one or more embodiments of the invention, the electric insulation layer is attached to layer surface in heat conduction using flexible polymer
Formed, the heat conduction middle level that makes by means of electric insulation layer is isolated to realize electric insulation with printing heating layer.
In one or more embodiments of the invention, the pyroconductivity of the electric insulation layer is less than the heat conduction middle level, and electricity is absolutely
Edge layer passes to heat conduction middle level with receiving the printing heating layer even heat.
In one or more embodiments of the invention, it also includes the control of the wire and connecting wire of electrical connection printing heating layer
Circuit processed, they are wrapped up by the heat-conduction electric insulation shell, and the power line of control circuit connection extends outside heat-conduction electric insulation
Shell.
Under same design, the present invention provides a kind of heater again, and it includes：Heat-conduction electric insulation shell and by heat-conduction electric insulation
There is conducting part in the heat of shell parcel, heat occurs conducting part includes heat conduction middle level, electric insulation layer, the printing hair be close to successively
Thermosphere, electric insulation layer and heat conduction middle level.
In one or more embodiments of the invention, the electrical isolation case is to pass through mould using thermostable heat-conductive plastics
Integrative-structure is formed after the heat into conducting part injection occurs, the heat-conduction electric insulation shell pyroconductivity is less than the heat conduction
Middle level, so that the accumulation of heat of heat-conduction electric insulation shell and comprehensive even warm transmission.
In one or more embodiments of the invention, it is multilayer or multiple rows of interval setting that the heat occurs conducting part.
In one or more embodiments of the invention, the printing heating layer is printing heating circuit；In the heat conduction
Layer is made up of aluminium/aluminum alloy materials；The electric insulation layer uses flexible polymer.
The present invention also provides the heater in a kind of aquarium, including preceding claim scheme.
Beneficial effect of the present invention produced by compared with background technology：
Present invention employs above-mentioned technical proposal, it has, and sound construction is reliable, simple and practical, cost of manufacture is cheap, versatility
By force, using it is wide the features such as, led with reaching heat heat conduction, thermostatic control is accurate, safe and reliable, electricity separation, energy-conserving and environment-protective, warp
It is durable long and other effects.
【Brief description of the drawings】
Fig. 1 is the cross section structure schematic diagram of heater in one embodiment of the present invention；
Fig. 2 is the structural representation of heater in one embodiment of the present invention；
Fig. 3 is the structural representation of aquarium in one embodiment of the present invention.
【Specific embodiment】
Embodiments of the invention are described below in detail, described embodiment example is shown in the drawings, wherein identical from start to finish
Or similar label represents same or similar element or the element with same or like function.
In the description of the invention, it is necessary to explanation, for the noun of locality, if any term, " " center ", " is indulged at " transverse direction "
To ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ",
The indicating position such as " bottom ", " interior ", " outward ", " clockwise ", " counterclockwise " and position relationship are based on orientation shown in the drawings or position
Relation is put, the narration present invention is for only for ease of and is simplified description, it is necessary rather than the device or element for indicating or imply meaning
Construct and operate with specific orientation, with particular orientation, it is impossible to be interpreted as limitation specific protection domain of the invention.
Additionally, be only used for describing purpose if any term " first ", " second ", and it is not intended that indicating or implying relatively heavy
The property wanted or the implicit quantity for indicating technical characteristic.Thus, defining " first ", " second " feature can express or implicit include
One or more this feature, in the present description, " at least " is meant that one or more, unless otherwise clearly having
The restriction of body.
In the present invention, except as otherwise clear stipulaties and restriction, should make if any term " assembling ", " connected ", " connection " term
Broad sense is gone to understand, for example, it may be being fixedly connected, or being detachably connected, or is integrally connected；Can also be that machinery connects
Connect；Can be joined directly together, or be connected by intermediary, can be that two element internals are connected.For ability
For the those of ordinary skill of domain, above-mentioned term concrete meaning in the present invention can be as the case may be understood.In invention
In, unless otherwise prescribed and limit, fisrt feature second feature it " on " or D score can include the first and second features
Directly contact, it is also possible to including fisrt feature and second feature be not directly contact but connect by the other feature between them
Touch.And, fisrt feature include fisrt feature directly over second feature in second feature " on ", " under " and " above " and
Oblique upper, or be only to represent height of the fisrt feature level height higher than second feature.Fisrt feature is in second feature " it
On ", " under " and " below " include fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level
Highly it is less than second feature.
With reference to the accompanying drawing of specification, it is further described by specific embodiment of the invention, sends out this
Bright technical scheme and its advantage is clearer, clear and definite.It is exemplary, purport below with reference to Description of Drawings embodiment
It is of the invention explaining, and be not considered as limiting the invention.
Referring to shown by Fig. 1-2, it is the preferred embodiment that the present invention is provided, a kind of heater, and it includes heat conduction
Electrical isolation case 1, heat conduction middle level 2, printing heating layer 3 and electric insulation layer 4, wherein, the heat-conduction electric insulation shell 1 has for being added
The outer surface 11 of hot liquid contact heat-exchanging；Heat conduction middle level 2 is arranged in heat-conduction electric insulation shell 1 and is close to outside heat-conduction electric insulation
Shell inner surface 12；In heat-conduction electric insulation shell 1, the printing heating layer 3 is electrically insulated the sandwiched of layer 4 or bag to printing heating layer 3
Wrap up in；Electric insulation layer 4 described in the sandwiched of heat conduction middle level 2, the pyroconductivity of heat-conduction electric insulation shell 1 is less than the heat conduction middle level
2, so that the accumulation of heat of heat-conduction electric insulation shell and comprehensive even warm transmission.
In the present embodiment, heat-conduction electric insulation shell 1 is made of thermostable heat-conductive plastics；The printing heating layer 3 is sent out for printing
Heater circuit；The heat conduction middle level 2 is made sheet for aluminium/aluminum alloy materials, and electric insulation layer 4 is attached to using flexible polymer leads
Hanker the surface of layer 2 to be formed, the heat conduction middle level 2 that makes by means of electric insulation layer 4 is isolated to realize electric insulation with printing heating layer 3,
The pyroconductivity of the electric insulation layer 4 is less than the heat conduction middle level 2, and electric insulation layer receives the printing heating layer even heat ground
Pass to heat conduction middle level.
In the present embodiment, it also includes the wire 5 of electrical connection printing heating layer 3 and the control circuit 6 of connecting wire 5, and they are equal
Wrapped up by the heat-conduction electric insulation shell 1, the power line 7 of the control connection of circuit 6 extends the reconnection of heat-conduction electric insulation shell 1 and inserts
First 8.
Heat conduction middle level 2, electric insulation layer 4, printing heating layer 3, electric insulation layer 4 and the combination of heat conduction middle level 2 being close to successively
Effect and effect are to print heating layer heating and the heat of other layers to conduct, and be properly termed as heat and conducting part occurs.During making, should
Electrical isolation case 1 is that the heat occurs to be formed after conducting part is molded by mould using thermostable heat-conductive plastics integrally to tie
Structure, the pyroconductivity of heat-conduction electric insulation shell 1 is less than the heat conduction middle level 2, so that the accumulation of heat of heat-conduction electric insulation shell and full side
The even warm transmission in position.
In different power and the difference of use occasion, it is multilayer or multiple rows of interval that the heat into conducting part can also occur
Set, can be equally integrated using the injection of heat-conduction electric insulation shell 1.
Referring to shown in Fig. 3, the present invention also provides heater in a kind of aquarium, including casing and above-described embodiment.
Combine with reference to the above and in the lump all accompanying drawings, operation principle of the invention, during work, to printing heating layer 3
Be powered to produce heat, heat by passing to heat conduction middle level 2 after electric insulation layer 4, the then pyroconductivity of heat-conduction electric insulation shell 1
Less than the heat conduction middle level 2, so that heat-conduction electric insulation shell absorbs and accumulation of heat and comprehensive even warm transmission, to cause heat conduction electricity
The heat of insulation crust 1 is uniformly gently to carry out heat exchange with water, led with reaching heat heat conduction, thermostatic control precisely,
Safe and reliable, electricity separation, energy-conserving and environment-protective, durable in use and other effects, while sound construction is reliable, simple and practical, cost of manufacture
Cheap, highly versatile, using wide, high yield rate the features such as, therefore, it technically, economically has with practical function aspect
Prominent advantage.
In the description of specification, reference term " conjunction one embodiment ", " preferably ", " example ", " specific example " or
The description of " some examples " etc. means to combine specific features, structure, material or feature that the embodiment or example are described, comprising
In at least one embodiment of the invention or example, the schematic representation for above-mentioned term not necessarily refers in this manual
Be identical embodiment or example.And, the specific features of description, structure, material or feature can be at any one
Or combined in a suitable manner in multiple embodiments or example.
From the foregoing description of structures and principles it should be understood by those skilled in the art that, not office of the invention
It is limited to above-mentioned specific embodiment, this hair is all fallen within using the improvement and replacement of techniques well known on the basis of the present invention
Bright protection domain, should limit it by each claim.
Claims (10)
1. a kind of heater, it is characterised in that it includes：
Heat-conduction electric insulation shell, the heat-conduction electric insulation shell has the outer surface for heated liquid contact heat-exchanging；
Heat conduction middle level, it is arranged in heat-conduction electric insulation shell, is close to heat-conduction electric insulation inner surface of outer cover；
Printing heating layer, it is located in heat-conduction electric insulation shell, and the printing heating layer is electrically insulated layer sandwiched or parcel；It is described to lead
Hanker electric insulation layer described in layer sandwiched, the heat-conduction electric insulation shell pyroconductivity is less than the heat conduction middle level, so that heat conduction is electric
Insulation crust accumulation of heat and comprehensive even warm transmission.
2. heater according to claim 1, it is characterised in that：The heat-conduction electric insulation shell uses thermostable heat-conductive
Plastics are made；The printing heating layer is printing heating circuit；The heat conduction middle level is made up of aluminium/aluminum alloy materials.
3. heater according to claim 2, it is characterised in that the electric insulation layer is attached to using flexible polymer
Layer surface is formed in heat conduction, and the heat conduction middle level that makes by means of electric insulation layer is isolated to realize electric insulation with printing heating layer.
4. heater according to claim 1, it is characterised in that the pyroconductivity of the electric insulation layer is led less than described
Hanker layer, electric insulation layer passes to heat conduction middle level with receiving the printing heating layer even heat.
5. heater according to claim 4, it is characterised in that:It also include electrical connection printing heating layer wire and
The control circuit of connecting wire, they are wrapped up by the heat-conduction electric insulation shell, and the power line of control circuit connection extends
Heat-conduction electric insulation shell.
6. a kind of heater, it is characterised in that it includes：Heat-conduction electric insulation shell and the heat wrapped up by heat-conduction electric insulation shell
There is conducting part in amount, heat occurs conducting part includes heat conduction middle level, electric insulation layer, printing heating layer, the electric insulation be close to successively
Layer and heat conduction middle level.
7. heater according to claim 6, it is characterised in that：The electrical isolation case is using thermostable heat-conductive plastics
The heat is occurred by mould form integrative-structure after conducting part is molded, the heat-conduction electric insulation shell pyroconductivity is less than
The heat conduction middle level, so that the accumulation of heat of heat-conduction electric insulation shell and comprehensive even warm transmission.
8. heater according to claim 7, it is characterised in that：It is multilayer or multiple rows of interval that the heat occurs conducting part
Set.
9. heater according to claim 8, it is characterised in that：The printing heating layer is printing heating circuit；Institute
Heat conduction middle level is stated by aluminium/aluminum alloy materials are made；The electric insulation layer uses flexible polymer.
10. a kind of aquarium, it is characterised in that：Including the heater any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611242756.2A CN106719286A (en) | 2016-12-29 | 2016-12-29 | Heater and the aquarium using heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611242756.2A CN106719286A (en) | 2016-12-29 | 2016-12-29 | Heater and the aquarium using heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106719286A true CN106719286A (en) | 2017-05-31 |
Family
ID=58923730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611242756.2A Pending CN106719286A (en) | 2016-12-29 | 2016-12-29 | Heater and the aquarium using heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106719286A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112365783A (en) * | 2020-11-10 | 2021-02-12 | 温州市大荣纺织仪器有限公司 | Sweating and body warming dummy |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2153220Y (en) * | 1993-04-22 | 1994-01-19 | 关志光 | Double protective diving type electronic constant temp. heater for aquatic animals box |
| US20080102309A1 (en) * | 2006-10-27 | 2008-05-01 | Tuffile Charles D | Heating element sheaths |
| CN201571684U (en) * | 2009-12-18 | 2010-09-08 | 黄海强 | Dining table insulation board |
| CN202160295U (en) * | 2010-08-31 | 2012-03-07 | 上海吉龙塑胶制品有限公司 | Miniature pool and PTC heater for heating liquid therein |
| CN203037120U (en) * | 2013-01-12 | 2013-07-03 | 李柏盛 | Heat-accumulation guide plate and electric heating utensil using same |
| CN205510440U (en) * | 2016-03-14 | 2016-08-24 | 芜湖美的厨卫电器制造有限公司 | PTC heating pipe subassembly and have its electric water heater |
-
2016
- 2016-12-29 CN CN201611242756.2A patent/CN106719286A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2153220Y (en) * | 1993-04-22 | 1994-01-19 | 关志光 | Double protective diving type electronic constant temp. heater for aquatic animals box |
| US20080102309A1 (en) * | 2006-10-27 | 2008-05-01 | Tuffile Charles D | Heating element sheaths |
| CN201571684U (en) * | 2009-12-18 | 2010-09-08 | 黄海强 | Dining table insulation board |
| CN202160295U (en) * | 2010-08-31 | 2012-03-07 | 上海吉龙塑胶制品有限公司 | Miniature pool and PTC heater for heating liquid therein |
| CN203037120U (en) * | 2013-01-12 | 2013-07-03 | 李柏盛 | Heat-accumulation guide plate and electric heating utensil using same |
| CN205510440U (en) * | 2016-03-14 | 2016-08-24 | 芜湖美的厨卫电器制造有限公司 | PTC heating pipe subassembly and have its electric water heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112365783A (en) * | 2020-11-10 | 2021-02-12 | 温州市大荣纺织仪器有限公司 | Sweating and body warming dummy |
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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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 528415 third, 3 West Sixth Street, Zhen Xi Road, Xiaolan Town, Zhongshan, Guangdong. Applicant after: ZHONGSHAN JINGBANG ELECTRIC APPLIANCE Co.,Ltd. Address before: 528415 third, 3 West Sixth Street, Zhen Xi Road, Xiaolan Town, Zhongshan, Guangdong. Applicant before: ZHONGSHAN CITY XIAOLAN TOWN JINGBANG ELECTRICAL APPLIANCE CO.,LTD. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |