CN101440822A - Axial-flow fan and fan blade of centrifugal fan - Google Patents
Axial-flow fan and fan blade of centrifugal fan Download PDFInfo
- Publication number
- CN101440822A CN101440822A CNA2008101870340A CN200810187034A CN101440822A CN 101440822 A CN101440822 A CN 101440822A CN A2008101870340 A CNA2008101870340 A CN A2008101870340A CN 200810187034 A CN200810187034 A CN 200810187034A CN 101440822 A CN101440822 A CN 101440822A
- Authority
- CN
- China
- Prior art keywords
- fan blade
- pressure compensation
- fan
- hole
- marginal part
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/289—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps having provision against erosion or for dust-separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/682—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid extraction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a fan blade of an axial fan or a centrifugal fan, which comprises a front edge part (1) in an air inflow direction and a back edge part (2) in an air outflow direction, and is characterized in that the back edge part (2) is provided with a plurality of pressure balancing holes (3). Because the back edge part of the fan blade is provided with the plurality of the pressure balancing holes, the fan blade reduces pressure difference between the front and the back of the fan blade, eliminates backflow phenomenon brought by air current separation at a boundary layer of the back edge part, and increases effective functional area of the fan blade, so as to potentially improve power consumption and noise quality, and avoid depositing large amount of dust at the same time.
Description
Technical field:
The present invention relates generally to a kind of fan blade of axial fan and the fan blade of centrifugal cutter.
Background technique:
As shown in Figure 1, the fan blade of existing axial fan, the front edge 1 of air stream Inbound and the hinder marginal part 2 of air stream outgoing direction, when fan blade rotates, front edge 1 pushes away leaked-in air forward, the design of hinder marginal part 2 is beneficial to air and flows out, through experimental results show that: when 1) fan blade rotates, the influence that air draught strengthens because of rotation function at the fan blade trailing edge, cause air draught in flowing out hinder marginal part 2 processes, the boundary layer airflow separating belt comes backflow phenomenon, easily 3 a large amount of dusts 4 of hinder marginal part 2 depositions in the windward side, cooling axial fan in the experiment from the computer, we can be very easy to find the situation of foregoing description.The windward side 2 of fan blade is meant the one side identical with air-out direction.
In addition, there is above-mentioned technical problem equally in the fan blade of centrifugal cutter.
Summary of the invention:
In order to overcome the deficiencies in the prior art, an object of the present invention is a kind of fan blade of axial fan, design several pressure compensation openings at the fan blade hinder marginal part, reduce the pressure reduction of fan blade front-back, eliminate the hinder marginal part boundary layer airflow and separate the backflow phenomenon that brings, increase the effective efficiency area of flabellum, thereby potential power consumpiton and the noise quality improved avoids depositing a large amount of dusts simultaneously.
The fan blade of a kind of axial fan of the present invention is to finish by following technological scheme: a kind of fan blade of axial fan, comprise the front edge of air stream Inbound and the hinder marginal part of air stream outgoing direction, and have several pressure compensation openings on the hinder marginal part.
Compared with prior art, advantage of the present invention has: design several pressure compensation openings at the fan blade hinder marginal part, play the effect of self balancing pressure, reduce the pressure reduction of fan blade front-back, eliminate the hinder marginal part boundary layer airflow and separate the backflow phenomenon that brings, increase the effective efficiency area of flabellum, thereby potential power consumpiton and the noise quality improved avoids depositing a large amount of dusts simultaneously.
Above-mentioned described several pressure compensation openings can be array distribution, evenly distribute, and also can be random distribution.
The pore diameter range of above-mentioned described pressure compensation opening: 0.1mm-100mm.
Described pressure compensation opening can be circular or non-circular clear opening, straight blind hole, oblique through hole or oblique blind hole.
The distribution of above-mentioned described several pressure compensation openings constitutes a hole pattern, regulates fan blade two surface pressures; The distribution of pressure compensation opening, shape and size are decided according to size, shape, working environment and the condition of fan blade.
Another object of the present invention is a kind of fan blade of centrifugal cutter, design several pressure compensation openings at the fan blade hinder marginal part, reduce the pressure reduction of fan blade front-back, eliminate the hinder marginal part boundary layer airflow and separate the backflow phenomenon that brings, increase the effective efficiency area of flabellum, thereby potential power consumpiton and the noise quality improved avoids depositing a large amount of dusts simultaneously.
The fan blade of a kind of centrifugal cutter of the present invention is to finish by following technological scheme: a kind of fan blade of centrifugal cutter, comprise the front edge of air stream Inbound and the hinder marginal part of air stream outgoing direction, and have several pressure compensation openings on the hinder marginal part.
Compared with prior art, advantage of the present invention has: design several pressure compensation openings at the fan blade hinder marginal part, play the effect of self balancing pressure, reduce the pressure reduction of fan blade front-back, eliminate the hinder marginal part boundary layer airflow and separate the backflow phenomenon that brings, increase the effective efficiency area of flabellum, thereby potential power consumpiton and the noise quality improved avoids depositing a large amount of dusts simultaneously.
Above-mentioned described several pressure compensation openings can be array distribution, evenly distribute, and also can be random distribution.
The pore diameter range of above-mentioned described pressure compensation opening: 0.1mm-100mm.
Described pressure compensation opening can be circular or non-circular clear opening, straight blind hole, oblique through hole or oblique blind hole.
The distribution of above-mentioned described several pressure compensation openings constitutes a hole pattern, regulates fan blade two surface pressures; The distribution of pressure compensation opening, shape and size are decided according to size, shape, working environment and the condition of fan blade.
Description of drawings:
Below in conjunction with accompanying drawing the present invention is done detailed explanation:
Fig. 1 is the structural representation of conventional axial-flow fan
Fig. 2 is the structural representation of axial fan fan blade of the present invention;
Fig. 3 is the application schematic representation of axial fan of the present invention;
Fig. 4 is the structural representation of centrifugal cutter of the present invention;
Fig. 5 is the structural representation of centrifugal cutter fan blade of the present invention.
Embodiment:
Embodiment 1: as Fig. 2, shown in Figure 3, axial fan fan blade of the present invention comprises the front edge 1 of air stream Inbound and the hinder marginal part 2 of air stream outgoing direction, has several pressure compensation openings 3 on the hinder marginal part 2.Several pressure compensation openings 3 can be circular hole, non-circular hole, clear opening, straight blind hole, oblique through hole or oblique blind hole.The distribution of several pressure compensation openings 3 constitutes a hole pattern, regulates fan blade two surface pressures.The pore diameter range of pressure compensation opening 3: 0.1mm-100mm.
Through experimental results show that: on hinder marginal part 2, have several pressure compensation openings 3, play the effect of self balancing pressure, reduce the pressure reduction of fan blade front-back, hinder marginal part 2 boundary layer airflow of eliminating on the windward side 4 are separated the backflow phenomenon that brings, increase the effective efficiency area of flabellum, thereby potential power consumpiton and the noise quality improved avoids depositing a large amount of dusts, sanitation and hygiene simultaneously.
Embodiment 2: as Fig. 4, shown in Figure 5, centrifugal cutter fan blade of the present invention comprises the front edge 1 of air stream Inbound and the hinder marginal part 2 of air stream outgoing direction, has several pressure compensation openings 3 on the hinder marginal part 2.Several pressure compensation openings 3 can be circular hole, non-circular hole, clear opening, straight blind hole, oblique through hole or oblique blind hole.The distribution of several pressure compensation openings 3 constitutes a hole pattern, regulates fan blade two surface pressures.The pore diameter range of pressure compensation opening 3: 0.1mm-100mm.
Through experimental results show that: on hinder marginal part 2, have several pressure compensation openings 3, play the effect of self balancing pressure, reduce the pressure reduction of fan blade front-back, hinder marginal part 2 boundary layer airflow of eliminating on the windward side 4 are separated the backflow phenomenon that brings, increase the effective efficiency area of flabellum, thereby potential power consumpiton and the noise quality improved avoids depositing a large amount of dusts, sanitation and hygiene simultaneously.
Claims (10)
1. the fan blade of an axial fan comprises the front edge (1) of air stream Inbound and the hinder marginal part (2) of air stream outgoing direction, it is characterized in that: have several pressure compensation openings (3) on the hinder marginal part (2).
2. the fan blade of a kind of axial fan according to claim 1, it is characterized in that: several pressure compensation openings (3) can be array distribution, can be even distributions, also can be random distribution.
3. the fan blade of a kind of axial fan according to claim 1 and 2 is characterized in that: described pressure compensation opening (3) can be clear opening, straight blind hole, tiltedly through hole or oblique blind hole.
4. the fan blade of a kind of axial fan according to claim 3 is characterized in that: hole pattern of distribution formation of several pressure compensation openings (3), adjusting fan blade two surface pressures.
5. the fan blade of a kind of axial fan according to claim 3 is characterized in that: the pore diameter range of pressure compensation opening (3): 0.1mm-100mm; Pressure compensation opening (3) can be circular hole, non-circular hole.
6. the fan blade of a centrifugal cutter comprises the front edge (1) of air stream Inbound and the hinder marginal part (2) of air stream outgoing direction, it is characterized in that: have several pressure compensation openings (3) on the hinder marginal part (2).
7. the fan blade of a kind of centrifugal cutter according to claim 6, it is characterized in that: several pressure compensation openings (3) can be array distribution, can be even distributions, also can be random distribution.
8. according to the fan blade of claim 6 or 7 described a kind of centrifugal cutters, it is characterized in that: described pressure compensation opening (3) can be clear opening, straight blind hole, oblique through hole or oblique blind hole.
9. the fan blade of a kind of centrifugal cutter according to claim 8 is characterized in that: hole pattern of distribution formation of several pressure compensation openings (3), adjusting fan blade two surface pressures.
10. the fan blade of a kind of centrifugal cutter according to claim 8 is characterized in that: the pore diameter range of pressure compensation opening (3): 0.1mm-100mm; Pressure compensation opening (3) can be circular hole, non-circular hole.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101870340A CN101440822A (en) | 2008-11-28 | 2008-12-11 | Axial-flow fan and fan blade of centrifugal fan |
| PCT/CN2009/073373 WO2010066140A1 (en) | 2008-12-11 | 2009-08-20 | A fan blade of an axial fan or a centrifugal fan |
| FR0958600A FR2939851A1 (en) | 2008-12-11 | 2009-12-02 | BLADE FOR FAN |
| ITMI2009A002129A IT1396643B1 (en) | 2008-11-28 | 2009-12-02 | FAN BLADES. |
| DE102009044824A DE102009044824A1 (en) | 2008-12-11 | 2009-12-08 | fan blades |
| US12/635,665 US20100150731A1 (en) | 2008-11-28 | 2009-12-10 | Fan blades |
| CA2687806A CA2687806A1 (en) | 2008-12-11 | 2009-12-10 | Fan blades |
| GB0921650A GB2466125A (en) | 2008-12-11 | 2009-12-11 | A Fan Blade with Holes |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810219647 | 2008-11-28 | ||
| CN200810219647.8 | 2008-11-28 | ||
| CNA2008101870340A CN101440822A (en) | 2008-11-28 | 2008-12-11 | Axial-flow fan and fan blade of centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101440822A true CN101440822A (en) | 2009-05-27 |
Family
ID=40725382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101870340A Pending CN101440822A (en) | 2008-11-28 | 2008-12-11 | Axial-flow fan and fan blade of centrifugal fan |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20100150731A1 (en) |
| CN (1) | CN101440822A (en) |
| IT (1) | IT1396643B1 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010066140A1 (en) * | 2008-12-11 | 2010-06-17 | 中山大洋电机股份有限公司 | A fan blade of an axial fan or a centrifugal fan |
| CN102003409A (en) * | 2010-12-30 | 2011-04-06 | 上海交通大学 | Blade in corrugated structure for centrifugal fan of winder |
| CN102536898A (en) * | 2010-12-29 | 2012-07-04 | 台达电子工业股份有限公司 | Fan and impeller thereof |
| CN102644623A (en) * | 2012-04-16 | 2012-08-22 | 广东美的制冷设备有限公司 | Axial-flow wind wheel |
| CN102678586A (en) * | 2012-05-23 | 2012-09-19 | 浙江理工大学 | Blade perforation type bladeless fan turbine device |
| CN103867468A (en) * | 2014-03-21 | 2014-06-18 | 宁波高新区金杉新能源科技有限公司 | Hot-and-cold fan with air purification function |
| CN103929011A (en) * | 2012-11-06 | 2014-07-16 | 米沃奇电动工具公司 | Electric Motor For A Power Tool |
| CN104454641A (en) * | 2014-11-13 | 2015-03-25 | 中国北车集团大连机车研究所有限公司 | Low-noise axial flow fan impeller for high-speed electric multiple unit cooling system |
| CN107044442A (en) * | 2017-04-26 | 2017-08-15 | 朱晓义 | A kind of fan for producing bigger motive force |
| CN107061357A (en) * | 2017-01-20 | 2017-08-18 | 美的集团股份有限公司 | Blade, centrifugal blower fan blade wheel, centrifugal blower and range hood |
| KR20190085735A (en) * | 2018-01-11 | 2019-07-19 | 엘지전자 주식회사 | Axial flow fan |
| CN110552852A (en) * | 2019-10-17 | 2019-12-10 | 湖南中科宇能科技有限公司 | Built-in manhole plate of wind power blade |
| CN113266601A (en) * | 2021-06-18 | 2021-08-17 | 中山百得厨卫有限公司 | Noise-reduction centrifugal wind wheel with opening holes on blades and range hood |
| US11784518B2 (en) | 2012-11-06 | 2023-10-10 | Milwaukee Electric Tool Corporation | Electric motor for a power tool |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705264A (en) * | 2012-06-15 | 2012-10-03 | 美的集团有限公司 | Axial flow wind wheel |
| US20140271286A1 (en) * | 2013-03-14 | 2014-09-18 | William McNeill | Noise Producing Fan |
| DE102013206207A1 (en) * | 2013-04-09 | 2014-10-09 | MTU Aero Engines AG | Airfoil for a turbomachine with trailing edge profiling, blade and integrally bladed rotor |
| CN103527516A (en) * | 2013-11-01 | 2014-01-22 | 赵瑞华 | Noiseless multiple-effect energy-saving axial flow fan |
| WO2018158226A1 (en) * | 2017-03-03 | 2018-09-07 | Convotherm-Elektrogeräte Gmbh | Fan wheel |
| DE102019105190A1 (en) * | 2019-02-28 | 2020-09-03 | Ebm-Papst St. Georgen Gmbh & Co. Kg | Axial fan with noise-reducing fan blades |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS524949A (en) * | 1975-07-02 | 1977-01-14 | Hitachi Ltd | Pump runner |
| JPS61279800A (en) * | 1985-06-06 | 1986-12-10 | Nissan Motor Co Ltd | Fan |
-
2008
- 2008-12-11 CN CNA2008101870340A patent/CN101440822A/en active Pending
-
2009
- 2009-12-02 IT ITMI2009A002129A patent/IT1396643B1/en active
- 2009-12-10 US US12/635,665 patent/US20100150731A1/en not_active Abandoned
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010066140A1 (en) * | 2008-12-11 | 2010-06-17 | 中山大洋电机股份有限公司 | A fan blade of an axial fan or a centrifugal fan |
| CN102536898B (en) * | 2010-12-29 | 2014-10-22 | 台达电子工业股份有限公司 | Fan and impeller thereof |
| CN102536898A (en) * | 2010-12-29 | 2012-07-04 | 台达电子工业股份有限公司 | Fan and impeller thereof |
| CN102003409A (en) * | 2010-12-30 | 2011-04-06 | 上海交通大学 | Blade in corrugated structure for centrifugal fan of winder |
| CN102644623A (en) * | 2012-04-16 | 2012-08-22 | 广东美的制冷设备有限公司 | Axial-flow wind wheel |
| CN102678586A (en) * | 2012-05-23 | 2012-09-19 | 浙江理工大学 | Blade perforation type bladeless fan turbine device |
| US12095343B2 (en) | 2012-11-06 | 2024-09-17 | Milwaukee Electric Tool Corporation | Electric motor for a power tool |
| CN103929011A (en) * | 2012-11-06 | 2014-07-16 | 米沃奇电动工具公司 | Electric Motor For A Power Tool |
| US10700575B2 (en) | 2012-11-06 | 2020-06-30 | Milwaukee Electric Tool Corporation | Electric motor for a power tool |
| US10476350B2 (en) | 2012-11-06 | 2019-11-12 | Milwaukee Electric Tool Corporation | Electric motor for a power tool |
| US11784518B2 (en) | 2012-11-06 | 2023-10-10 | Milwaukee Electric Tool Corporation | Electric motor for a power tool |
| US11411467B2 (en) | 2012-11-06 | 2022-08-09 | Milwaukee Electric Tool Corporation | Electric motor for a power tool |
| CN103867468B (en) * | 2014-03-21 | 2015-12-16 | 宁波高新区金杉新能源科技有限公司 | With the cold and hot type fan of air purification |
| CN103867468A (en) * | 2014-03-21 | 2014-06-18 | 宁波高新区金杉新能源科技有限公司 | Hot-and-cold fan with air purification function |
| CN104454641A (en) * | 2014-11-13 | 2015-03-25 | 中国北车集团大连机车研究所有限公司 | Low-noise axial flow fan impeller for high-speed electric multiple unit cooling system |
| CN107061357A (en) * | 2017-01-20 | 2017-08-18 | 美的集团股份有限公司 | Blade, centrifugal blower fan blade wheel, centrifugal blower and range hood |
| CN107061357B (en) * | 2017-01-20 | 2019-10-18 | 美的集团股份有限公司 | Blade, centrifugal blower fan blade wheel, centrifugal blower and range hood |
| CN107044442A (en) * | 2017-04-26 | 2017-08-15 | 朱晓义 | A kind of fan for producing bigger motive force |
| KR102092293B1 (en) * | 2018-01-11 | 2020-03-23 | 엘지전자 주식회사 | Axial flow fan |
| KR20190085735A (en) * | 2018-01-11 | 2019-07-19 | 엘지전자 주식회사 | Axial flow fan |
| CN110552852A (en) * | 2019-10-17 | 2019-12-10 | 湖南中科宇能科技有限公司 | Built-in manhole plate of wind power blade |
| CN110552852B (en) * | 2019-10-17 | 2024-06-07 | 湖南中科宇能科技有限公司 | Built-in manhole plate of wind power blade |
| CN113266601A (en) * | 2021-06-18 | 2021-08-17 | 中山百得厨卫有限公司 | Noise-reduction centrifugal wind wheel with opening holes on blades and range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1396643B1 (en) | 2012-12-14 |
| US20100150731A1 (en) | 2010-06-17 |
| ITMI20092129A1 (en) | 2010-06-12 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090527 |