CN104033488A - Design method of miniature ball bearing for ultra-high-speed abrasive drilling - Google Patents
Design method of miniature ball bearing for ultra-high-speed abrasive drilling Download PDFInfo
- Publication number
- CN104033488A CN104033488A CN201410272016.8A CN201410272016A CN104033488A CN 104033488 A CN104033488 A CN 104033488A CN 201410272016 A CN201410272016 A CN 201410272016A CN 104033488 A CN104033488 A CN 104033488A
- Authority
- CN
- China
- Prior art keywords
- bearing
- retainer
- outer ring
- design method
- ultra
- 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
Abstract
The invention relates to a design method of a miniature ball bearing for an ultra-high-speed abrasive drilling and relates to the technical field of bearings. The design method is characterized in that the miniature ball bearing comprises a bearing inner ring (1), a bearing outer ring (2), a holder (3), a pocket hole interval (4), a guiding interval (5) and rolling bodies (6), wherein the bearing inner ring (1) and the bearing outer ring (2) are made of Cronidur30 stainless steel, the rolling bodies (6) are made of Si3N4 ceramic balls, and the holder (3) is made of a polyimide composite material; a rigid-flexible multi-body dynamics simulation module of a parameterized angular contact ball bearing is developed by virtue of a CMD (command) language of an ADAMS (Automatic Dynamic Analysis Of Mechanical System), by analyzing parameters such as the load, deformation, temperature of the holder, the specific value D/Y of the pocket hole interval (4) to the guiding interval (5) is determined to be 1.5, and the specific value D/T of the pocket hole interval (4) to the diameter of each ceramic ball is 0.09. According to the design method, the average life of the ultra-high-speed bearings is prolonged from 40 hours to above 200 hours, so that the requirement of a power device for an medical operation is met, and the life of the ultra-high-speed bearings is prolonged.
Description
[technical field]
The present invention relates to technical field of bearings, specifically the present invention relates to the design method of micro rolling ball bearing for a kind of ultra high speed abrasive drilling.
[background technique]
Known, High speed drill miniature bearing is in work running, hand-held High speed drill miniature bearing working speed is 80,000 revs/min ~ 300,000 revs/min, require bearing within 2 seconds, can reach 300,000 revs/min of maximum speeds, 3 ~ 5 hours service time of single, the accumulation life-span is greater than 200 hours, has physiological saline, human body fluid, blood to penetrate into position of bearings in surgical procedure, and bearing can tolerate enzyme cleaning solution and soak rear clear water flushing; Can tolerate its performance after high temperature pressure steam (150 ℃) sterilization, thimerosal (glutaraldehyde etc.) soaking disinfection, the sterilizing of low-temperature plasma sterilization environment, in the life-span, rotproofness is without impact; Shaft strength is random alternate load, bearing noise≤60dB, and because bearing working condition is very harsh, there are following several failure modes in bearing in actual use:
1. cannot reach maximum speed;
2. high speed lower bearing retainer motion is unstable causes bearing to fall speed and retainer sharp wear even ruptures;
3. bearing raceway under impact loading destroys, and cannot meet the requirements of the life-span;
4. there is scorch in high-speed condition lower bearing point of contact excess Temperature;
5. there is the phenomenon of slightly getting rusty in common stainless steel bearing in Reusability and disinfecting process;
[summary of the invention]
In order to overcome the deficiency in background technique, the invention discloses the design method of micro rolling ball bearing for a kind of ultra high speed abrasive drilling, having realized the life-span of ultra high speed bearing brought up to more than 200 hours by average 40 hours, meet the requirement of medical operating power plant, and improved the object of ultra high speed bearing life.
For achieving the above object, the present invention adopts following technological scheme:
The design method of micro rolling ball bearing for a kind of ultra high speed abrasive drilling, comprise bearing inner race, bearing outer ring, retainer, pocket interporal lacuna, guide clearance and rolling element, outside at bearing inner race is provided with bearing outer ring, a plurality of rolling elements are arranged in the raceway between bearing inner race and bearing outer ring, described retainer separates a plurality of rolling elements one by one, the material of described bearing inner race and bearing outer ring is Cronidur30 stainless steel, the material of described rolling element is Si3N4 ceramic ball, the material of described retainer is composite polyimide material, and adopt the hard and soft dynamics simulation modules of stopping of ADAMS system CMD language development parametrization angular contact ball bearing more, by analyzing the load of retainer, distortion, the parameter of temperature, the ratio of determining pocket interporal lacuna and guide clearance is D/Y=1.5, the ratio of pocket interporal lacuna and ceramic ball diameter is D/T=0.09.
The design method of micro rolling ball bearing for described ultra high speed abrasive drilling, the D in described D/Y=1.5 is pocket interporal lacuna, and Y is guide clearance, and the T in described D/T=0.09 is ceramic ball diameter.
Owing to having adopted technique scheme, the present invention has following superiority:
1, the material of bearing inner race 1 and bearing outer ring 2 is Cronidur30 stainless steel, because Cronidur30 is a kind of high nitrogen chromium alloyed steel, chromium has wherein improved the corrosion resistance of material, molybdenum can prevent that pit from producing, nitrogen can significantly improve decay resistance, and its corrosion resistance is stainless 100 times of former bearing inner and outer ring material 9Cr18; Carbon and nitrogen can increase again hardness and the wear resistance of steel, and its fatigue wear life-span is stainless 4 times of common 9Cr18; By the improvement of bearing inner race 1 and bearing outer ring 2 materials, solved bearing under impact loading because raceway destroys, and the phenomenon that cannot meet the requirements of the life-span and slightly get rusty, effectively improved the bearing capacity of lasso, and bearing inner race 1 and the functional reliability of bearing outer ring 2 under alternate load have been met, the life-span of ultra high speed bearing was brought up to more than 200 hours by average 40 hours, met the requirement of medical operating power plant;
2, by the material selection Si3N4 ceramic ball of rolling element, because the hardness of stupalith can reach the stainless twice of 9Cr18, Young's modulus is 1.5 times of former steel ball 9Cr18, therefore the bearing capacity of ceramic ball is also much higher than the bearing capacity of Stainless Steel Ball, has improved the ability of the anti-alternate load of bearing; Because the working speed of ceramic ball bearing has reached the more than 1.3 times of 9Cr18 stainless steel limit speed, and solved the difficult problem that stainless steel bearing does not often reach maximum speed; Temperature rise when ceramic ball bearing turns round under 300,000 revs/min of rotating speeds is about 60% of 9Cr18 stainless steel bearing temperature rise, the friction Temperature Rise that is in operation is little, the quality of ceramic ball is about stainless 40%, during ultra high speed running, the suffered centrifugal force of rolling element and gyrostatic moment are little, revolving sliding is little, so frictional loss is starkly lower than stainless steel bearing; Si3N4 ceramic ball can be resisted all kinds of inorganic acids, organic acid corrosion, has greatly improved the corrosion resistance of bearing; Ceramic ball bearing can be realized selflubricating, thereby has improved the adaptability to severe lubricated environment; The improvement of the material by rolling element, has solved raceway point of contact excess Temperature and has occurred the phenomenon that scorch, bearing cannot reach maximum speed and slightly get rusty, and has improved the adaptability of ultra high speed bearing in severe working environment;
3, the material of retainer is composite polyimide material, described material has extraordinary creep resistance, low and stable friction factor, extraordinary dimensional stability and physiology inertia (be applicable to contact with food stage lubricating grease) and good processibility, has solved the high speed lower bearing retainer unstable bearing that causes that moves and has fallen the phenomenon that speed and retainer sharp wear even rupture, and utilize the hard and soft dynamics simulation modules of stopping of ADAMS system CMD language development parametrization angular contact ball bearing more, by analyzing the load of retainer, distortion, the parameters such as temperature, when final definite best pocket interporal lacuna (D) and guide clearance (Y) ratio are D/Y=1.5, can obtain minimum ball pocket hole power, obtain best centroid trajectory, wherein the ratio of pocket interporal lacuna (D) and ceramic ball diameter (T) is D/T=0.09, according to simulation analysis, the good retainer structural parameter of Performance Ratio (retainer pocket interporal lacuna and guide clearance) have been determined, and by bearing test, verified the rationality of retainer structure optimization, improved the stability of retainer under ultra high speed environment, reduced retainer inordinate wear.
[accompanying drawing explanation]
Fig. 1 is structural representation of the present invention;
Fig. 2 is that 300,000 revs/min of nothings of the present invention are optimized retainer motion of center of mass track;
Fig. 3 is that 300,000 revs/min of nothings of the present invention are optimized retainer motion of center of mass track;
In the drawings: 1, bearing inner race; 2, bearing outer ring; 3, retainer; 4, pocket interporal lacuna; 5, guide clearance; 6, rolling element.
[embodiment]
By the following examples, can explain in more detail the present invention, the present invention is not limited to the following examples;
The design method of micro rolling ball bearing for ultra high speed abrasive drilling described in 1 by reference to the accompanying drawings, comprise bearing inner race 1, bearing outer ring 2, retainer 3, pocket interporal lacuna 4, guide clearance 5 and rolling element 6, in the outside of bearing inner race 1, be provided with bearing outer ring 2, a plurality of rolling elements 6 are arranged in the raceway between bearing inner race 1 and bearing outer ring 2, described retainer 3 separates a plurality of rolling elements 6 one by one, the material of described bearing inner race 1 and bearing outer ring 2 is Cronidur30 stainless steel, the material of described rolling element 6 is Si3N4 ceramic ball, the material of described retainer 3 is composite polyimide material, and adopt the hard and soft dynamics simulation modules of stopping of ADAMS system CMD language development parametrization angular contact ball bearing more, by analyzing the load of retainer, distortion, the parameter of temperature, determine that pocket interporal lacuna 4 and the ratio of guide clearance 5 are D/Y=1.5, the ratio of pocket interporal lacuna and ceramic ball diameter is D/T=0.09.
The design method of micro rolling ball bearing for described ultra high speed abrasive drilling, the D in described D/Y=1.5 is pocket interporal lacuna, and Y is guide clearance, and the T in described D/T=0.09 is ceramic ball diameter.
Implement the design method of micro rolling ball bearing for ultra high speed abrasive drilling of the present invention, change bearing inner race 1 and bearing outer ring 2 materials into Cronidur30 stainless steel, due to former bearing inner and outer ring materials'use 9Cr18 stainless steel, although 9Cr18 stainless steel has stronger corrosion resistance, but under the repeated action of blood, physiological saline, also there is slight corrosion vestige, 9Cr18 wear resistance is poor in addition, under the impact loading of surgical environments, occurred that lasso raceway destroys the even situation of fracture, comprehensive above situation, change bearing inner race 1 and bearing outer ring 2 materials into Cronidur30 stainless steel, Cronidur30 is a kind of high nitrogen chromium alloyed steel, chromium has wherein improved the corrosion resistance of material, molybdenum can prevent that pit from producing, nitrogen can significantly improve decay resistance, its corrosion resistance is stainless 100 times of 9Cr18, carbon and nitrogen can increase again hardness and the wear resistance of steel, its fatigue wear life-span is stainless 4 times of common 9Cr18, by lasso, improve material, having solved bearing raceway under impact loading destroys, the phenomenon that cannot meet the requirements of the life-span and slightly get rusty.
Change the design of material of rolling element 6 into Si3N4 ceramic ball: former bearing roller materials'use 9Cr18 steel ball, under high-speed condition, there is the phenomenon of steel ball and lasso scorch in bearing point of contact excess Temperature, in addition, bearing does not also often reach maximum speed, consider, change 9Cr18 steel ball into Si3N4 ceramic ball, after employing ceramic ball, have the following advantages:
A, bearing capacity are high: the hardness of stupalith can reach the stainless twice of 9Cr18, and Young's modulus is 1.5 times of 9Cr18, so the bearing capacity of ceramic ball is also much higher than the bearing capacity of Stainless Steel Ball, have improved the ability of the anti-alternate load of bearing.
B, limit speed are high: the working speed of ceramic ball bearing has reached the more than 1.3 times of 9Cr18 stainless steel limit speed.Solved the difficult problem that stainless steel bearing does not often reach maximum speed.
C, friction Temperature Rise are little: temperature rise when ceramic ball bearing turns round under 300,000 revs/min of rotating speeds is about 60% of 9Cr18 stainless steel bearing temperature rise.
D, frictional loss are little: the quality of ceramic ball is about stainless 40%, and during ultra high speed running, the suffered centrifugal force of rolling element and gyrostatic moment are little, and revolving sliding is little, so frictional loss is starkly lower than stainless steel bearing.
E, good corrosion resistance: Si3N4 ceramic ball can be resisted all kinds of inorganic acids, organic acid corrosion, improved the corrosion resistance of bearing greatly.
F, self-lubricating property are good: ceramic ball bearing can be realized selflubricating, thereby have improved the adaptability to severe lubricated environment.
By the improvement of rolling element, solve raceway point of contact excess Temperature and occurred the phenomenon that scorch, bearing cannot reach maximum speed and slightly get rusty, improved the adaptability of ultra high speed bearing in severe working environment.
Retainer is as a link the weakest in bearing, bearing rotating speed is higher, the suffered impact force of retainer is just larger, the stability of retainer running is also just more bad, solve the unstable inefficacy causing of retainer motion mainly by dimensionally-optimised design and the test of retainer, improve the high stability of retainer, in the past owing to lacking retainer dynamic simulation analysis means, so the size of retainer can only be after bearing have been manufactured experimently, the retainer that just can use different structural parameter instead carries out bearing dynamic test, determine final retainer size, the present invention adopts bearing dynamic simulation analysis software to carry out high speed dynamic simulation to retainer centroid trajectory, according to simulation result, carried out retainer optimal design simultaneously.
Former bearing uses 1Cr18Ni9Ti steel retainer, although steel retainer intensity is high, but under ultra high speed environment, thereby its centroid trajectory is the poor high stability that greatly affects retainer of disorder and steel retainer and food stage lubricating grease matching comparatively also, cause bearing to fall speed and even occurred the phenomenon that retainer sharp wear even ruptures; For above phenomenon, retainer has been done the improvement of following two aspects:
A, retainer 3 materials: material changes composite polyimide material into by 1Cr18Ni9Ti steel, this material has extraordinary creep resistance, low and stable friction factor, extraordinary dimensional stability and physiology inertia (be applicable to contact with food stage lubricating grease), good processibility, by improving material, solved the unstable bearing that causes of high speed lower bearing retainer motion and fallen the phenomenon that speed and retainer sharp wear even rupture.
B, optimization retainer parameter: most important two parameters of retainer 3 are pocket interporal lacuna 4 and guide clearance 5; their various combination can affect ball pocket hole power and wearing and tearing greatly, utilizes the hard and soft dynamics simulation modules of stopping of ADAMS system CMD language development parametrization angular contact ball bearing more; By analyzing the parameters such as load, distortion, temperature of retainer, finally determine best pocket interporal lacuna (D) and guide clearance (Y) ratio: during D/Y=1.5, can obtain minimum ball pocket hole power, obtain best centroid trajectory.Wherein the ratio of pocket interporal lacuna (D) and ceramic ball diameter (T) is: D/T=0.09, accompanying drawing 2 is that 300,000 revs/min of nothings are optimized retainer motion of center of mass track schematic diagram, accompanying drawing 3 is retainer motion of center of mass track schematic diagram after 300,000 revs/min of optimizations, can the good retainer structural parameter of Performance Ratio have been determined according to simulation analysis: retainer pocket interporal lacuna and guide clearance, and by bearing test, verified the rationality of retainer structure optimization, improve the stability of retainer under ultra high speed environment, reduced retainer inordinate wear.
Part not in the detailed description of the invention is prior art.
The embodiment who selects in this article in order to disclose goal of the invention of the present invention, currently thinks suitablely, still, will be appreciated that, the present invention is intended to comprise that all belong to all changes and the improvement of the embodiment in this design and invention scope.
Claims (2)
1. the design method of micro rolling ball bearing for a ultra high speed abrasive drilling, comprise bearing inner race (1), bearing outer ring (2), retainer (3), pocket interporal lacuna (4), guide clearance (5) and rolling element (6), in the outside of bearing inner race (1), be provided with bearing outer ring (2), a plurality of rolling elements (6) are arranged in the raceway between bearing inner race (1) and bearing outer ring (2), described retainer (3) separates a plurality of rolling elements (6) one by one, it is characterized in that: the material of described bearing inner race (1) and bearing outer ring (2) is Cronidur30 stainless steel, the material of described rolling element (6) is Si3N4 ceramic ball, the material of described retainer (3) is composite polyimide material, and adopt the hard and soft dynamics simulation modules of stopping of ADAMS system CMD language development parametrization angular contact ball bearing more, by analyzing the load of retainer, distortion, the parameter of temperature, determine that pocket interporal lacuna (4) and the ratio of guide clearance (5) are D/Y=1.5, the ratio of pocket interporal lacuna (4) and ceramic ball diameter is D/T=0.09.
2. the design method of micro rolling ball bearing for ultra high speed abrasive drilling according to claim 1, is characterized in that: the D in described D/Y=1.5 is pocket interporal lacuna, and Y is guide clearance, and the T in described D/T=0.09 is ceramic ball diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410272016.8A CN104033488A (en) | 2014-06-18 | 2014-06-18 | Design method of miniature ball bearing for ultra-high-speed abrasive drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410272016.8A CN104033488A (en) | 2014-06-18 | 2014-06-18 | Design method of miniature ball bearing for ultra-high-speed abrasive drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104033488A true CN104033488A (en) | 2014-09-10 |
Family
ID=51464410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410272016.8A Pending CN104033488A (en) | 2014-06-18 | 2014-06-18 | Design method of miniature ball bearing for ultra-high-speed abrasive drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104033488A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847786A (en) * | 2014-10-20 | 2015-08-19 | 北京控制工程研究所 | Ceramic bearing capable of stably operating |
| CN109261864A (en) * | 2018-09-29 | 2019-01-25 | 中国航发哈尔滨轴承有限公司 | A kind of Cronidur30 high nitrogen stainless steel bearing ring blank forging manufacturing process |
| CN111765171A (en) * | 2020-07-16 | 2020-10-13 | 河南科技大学 | Cylindrical roller bearing and retainer thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002130297A (en) * | 2000-10-23 | 2002-05-09 | Ntn Corp | Rolling-element bearing for large end of connecting rod |
| US20020110298A1 (en) * | 2001-02-09 | 2002-08-15 | Koyo Seiko Co., Ltd. | Ball bearing |
| CN1388327A (en) * | 2001-05-29 | 2003-01-01 | 日本精工株式会社 | Rolling slider and rolling device |
| CN101052818A (en) * | 2004-10-11 | 2007-10-10 | 卡玛蒂克斯公司 | Method and apparatus for coupling components |
| CN101271040A (en) * | 2007-03-08 | 2008-09-24 | 通用电气公司 | Method for testing rotor and stator assemblies |
| CN101450712A (en) * | 2007-12-06 | 2009-06-10 | 滚动轴承美国公司 | Actuation system for a lift assisting device and roller bearings used therein |
| CN101672326A (en) * | 2009-09-08 | 2010-03-17 | 黄若 | Hybrid ceramic ball bearing on turbocharger and design method thereof |
| CN102713321A (en) * | 2011-01-19 | 2012-10-03 | 日本精工株式会社 | Roller bearing |
| CN202756427U (en) * | 2012-07-23 | 2013-02-27 | 日本精工株式会社 | Solid lubrication rolling bearing |
| CN202971556U (en) * | 2012-08-27 | 2013-06-05 | 日本精工株式会社 | Thrust bearing for hydraulic type stepless speed changer |
-
2014
- 2014-06-18 CN CN201410272016.8A patent/CN104033488A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002130297A (en) * | 2000-10-23 | 2002-05-09 | Ntn Corp | Rolling-element bearing for large end of connecting rod |
| US20020110298A1 (en) * | 2001-02-09 | 2002-08-15 | Koyo Seiko Co., Ltd. | Ball bearing |
| CN1388327A (en) * | 2001-05-29 | 2003-01-01 | 日本精工株式会社 | Rolling slider and rolling device |
| CN101052818A (en) * | 2004-10-11 | 2007-10-10 | 卡玛蒂克斯公司 | Method and apparatus for coupling components |
| CN101271040A (en) * | 2007-03-08 | 2008-09-24 | 通用电气公司 | Method for testing rotor and stator assemblies |
| CN101450712A (en) * | 2007-12-06 | 2009-06-10 | 滚动轴承美国公司 | Actuation system for a lift assisting device and roller bearings used therein |
| CN101672326A (en) * | 2009-09-08 | 2010-03-17 | 黄若 | Hybrid ceramic ball bearing on turbocharger and design method thereof |
| CN102713321A (en) * | 2011-01-19 | 2012-10-03 | 日本精工株式会社 | Roller bearing |
| CN202756427U (en) * | 2012-07-23 | 2013-02-27 | 日本精工株式会社 | Solid lubrication rolling bearing |
| CN202971556U (en) * | 2012-08-27 | 2013-06-05 | 日本精工株式会社 | Thrust bearing for hydraulic type stepless speed changer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847786A (en) * | 2014-10-20 | 2015-08-19 | 北京控制工程研究所 | Ceramic bearing capable of stably operating |
| CN109261864A (en) * | 2018-09-29 | 2019-01-25 | 中国航发哈尔滨轴承有限公司 | A kind of Cronidur30 high nitrogen stainless steel bearing ring blank forging manufacturing process |
| CN111765171A (en) * | 2020-07-16 | 2020-10-13 | 河南科技大学 | Cylindrical roller bearing and retainer thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104033488A (en) | Design method of miniature ball bearing for ultra-high-speed abrasive drilling | |
| CN104162766A (en) | Production technology of high-precision deep groove ball bearing | |
| JPH03117725A (en) | Rolling bearing | |
| JP5465933B2 (en) | Manufacturing method of rolling bearing | |
| CN109555783A (en) | Novel combined type bearing retainer | |
| JP2009250316A (en) | Cage for rolling bearing | |
| JP2009257416A (en) | Cage for rolling bearing, the rolling bearing, and manufacturing method of cage for the rolling bearing | |
| CN201575049U (en) | Novel four-point contact ball bearing | |
| US11401973B2 (en) | Thrust roller bearing | |
| CN214171140U (en) | Lightweight high-speed bearing retainer | |
| CN102678740B (en) | Low-temperature deep cooling bearing | |
| CN203374657U (en) | Angular contact bearing | |
| US6948247B2 (en) | Method for forming a bearing race for a cylindrical bearing | |
| CN105587769B (en) | A kind of deep groove ball bearing peach heart pocket hole retainer | |
| JP2013213577A (en) | Sliding member, needle roller bearing and metal surface treatment method | |
| CN205136368U (en) | High strength quenching and tempering resistant grinding shaft hold | |
| CN217055966U (en) | Emergency bearing for magnetic suspension compressor | |
| CN202149141U (en) | Magnetic rolling bearing | |
| CN201106623Y (en) | Connecting rod bearing for weaving machine | |
| CN215720250U (en) | Roller-guided ultra-large slewing bearing thrust retainer | |
| CN220015813U (en) | High-speed running bearing | |
| CN212838979U (en) | Combined deep groove ball bearing | |
| CN218817588U (en) | Bearing without retainer | |
| CN216554944U (en) | Bearing for internal environment of compressor | |
| CN205908651U (en) | A ball bearing for machine tool movable bed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140910 |