CN106739032A - A kind of production technology of combination switch sealing plate - Google Patents
A kind of production technology of combination switch sealing plate Download PDFInfo
- Publication number
- CN106739032A CN106739032A CN201611163109.2A CN201611163109A CN106739032A CN 106739032 A CN106739032 A CN 106739032A CN 201611163109 A CN201611163109 A CN 201611163109A CN 106739032 A CN106739032 A CN 106739032A
- Authority
- CN
- China
- Prior art keywords
- sealing plate
- combination switch
- ball milling
- mixing
- raw material
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of production technology of combination switch sealing plate, comprise the following steps：(i) dispensing；(ii) crush；(iii) mixing and ball milling；(iv) spin；(v) by the raw material shredding after spinning, combing, into net；Pinprick reinforcement will be carried out in the above-mentioned material input needing machine into after net, circle is obtained needle fabric around, cut-out；(vi) at least two-layer needle fabric is obtained composite by the compound method for taking out material cooling；(vii) composite is obtained sealing plate by pre-oxidizing the method for carbonized graphite；(viii) outer surface coats AFM coating.Combination switch sealing plate of the present invention further increases the Corrosion Protection and anti-wear performance of sealing plate by coating AFM coating so that switch is adapted to various adverse circumstances.
Description
Technical field
The present invention relates to a kind of production technology of combination switch sealing plate, belong to power supply or switching device for power distribution technology
Field.
Background technology
Switch cubicle is a kind of electrical equipment, and switch cubicle outside line is introduced into master switch in cabinet, is switched subsequently into sub-control, respectively
Branch is needed to set by it.Such as instrument, automatic control, motor magnetic switch, various A.C. contactors etc., have also set hyperbaric chamber with
Low-pressure chamber switch cubicle, is provided with high voltage bus, such as power plant, and what is had is additionally provided with to protect the low-frequency load reduction of capital equipment.
The Main Function of switch cubicle is to be generated electricity in power system, transmitted electricity, during distribution and electric energy change, carried out
Folding, control and protection electrical equipment.Part in switch cubicle mainly have breaker, combination switch, operating mechanism, transformer with
And the composition such as various protection devices.Combination switch refers to that can be closed under beam conduction loop condition, carried and drop-out current
Switchgear.
Existing combination switch includes housing, controllable silicon and relay, and controllable silicon and relay are arranged in housing,
The structure for generally using is by controllable silicon and relay and connects.Universal implementation method is at present：During input, in voltage zero-cross wink
Between the zero cross fired controllable silicon in parallel with relay or contactor, relay or contactor adhesive are turned on again after stabilization;And cut
When going out, first by controlled silicon conducting, then disconnected by relay or contacts of contactor, it is to avoid relay or contactor are produced when disconnecting
Raw electric arc, the finally controllable silicon shut-off at current zero-crossing point, so as to realize that current over-zero cuts off, makes combination switch connect on and off
The moment opened has the advantages that silicon control zero-cross switching, and excellent with magnetic maintained switch zero-power during normal ON
Point.Combination switch has without the remarkable advantages such as impact, low-power consumption, high life, alternative contactor or thyristor switch, uses extensively
In low-pressure reactive compensation field.
The content of the invention
The technical problem to be solved in the present invention is, in view of the shortcomings of the prior art, proposing a kind of safe combination switch
With the production technology of sealing plate.
The present invention is that the technical scheme for solving above-mentioned technical problem proposition is：A kind of production work of combination switch sealing plate
Skill, comprises the following steps：
(i) dispensing:The mass percent of each composition is in the combination switch sealing plate：Crosslinked polyethylene 1.23-1.26%,
Styrene 1.34-2.57%, magnesium stearate 1.25-1.33%, fulvic acid iron 1.13-1.17%, magnesia 0.75-
0.87%th, glass fibre 4.26-4.57%, acetylacetone,2,4-pentanedione 1.28-1.47%, polyamide 1.48-1.67%, epoxy resin
3.18-3.23%, vinyltrimethoxy silane 0.33-0.39%, hydroxy silicon oil 0.08-0.13%, polyester fiber 10.67-
14.32%, balance of polyster fibre；
(ii) crush：The raw material of above-mentioned sealing plate is crushed respectively using pulverizer；
(iii) mixing and ball milling：Raw material is put into mixing and ball milling instrument by the mass percent carries out mixing and ball milling, former after mixing and ball milling
The particle diameter of material is between 850-900 mesh；
(iv) spin：Raw material after mixing and ball milling is heated into spinning, control temperature is between 310-320 DEG C；
(v) by the raw material shredding after spinning, combing, into net；Add acupuncture is carried out in the above-mentioned material input needing machine into after net
Gu, circle around, cut-out, be obtained needle fabric；
(vi) at least two-layer needle fabric is obtained composite by the method for compound-taking-up material-cooling, is combined temperature
It is 130~160 DEG C to spend, and its thickness of composite is 15mm~24mm, and grammes per square metre is 320~560 g/m2；
(vii) by composite by the prepared sealing plate of pre-oxidation-carbonization-graphitizing method, wherein controlling the Pre oxidation to be
, carburizing temperature is controlled for 1500-1600 DEG C, it is 2800-2900 DEG C to control graphitization temperature by 250-300 DEG C；
(viii) outer surface coats AFM coating, and the component of the AFM coating is by mass percentage：Carbon：0.12-
0.15%, chromium：1.2-2.4%, titanium：2.2-3.5%, cobalt：1.5-2.2%, niobium：0.2-0.3%, zinc：1.2-1.5%, samarium：1.5-
1.8%, neodymium：1.2-1.4%, promethium：0.12-0.25%, europium：0.02-0.04%, gadolinium：0.2-0.5%, aluminium：3.3-3.8%, it is balance of
Iron.
The improvement of above-mentioned technical proposal is：The mass percent of each composition is in combination switch sealing plate：It is crosslinked poly- second
Alkene 1.23%, styrene 1.34%, magnesium stearate 1.25%, fulvic acid iron 1.13%, magnesia 0.75%, glass fibre
4.26%th, acetylacetone,2,4-pentanedione 1.28%, polyamide 1.48%, epoxy resin 3.18%, vinyltrimethoxy silane
0.33%th, hydroxy silicon oil 0.08%, polyester fiber 10.67%, balance of polyster fibre.
The improvement of above-mentioned technical proposal is：The mass percent of each composition is in combination switch sealing plate：It is crosslinked poly- second
Alkene 1.26%, styrene 2.57%, magnesium stearate 1.33%, fulvic acid iron 1.17%, magnesia 0.87%, glass fibre
4.57%th, acetylacetone,2,4-pentanedione 1.47%, polyamide 1.67%, epoxy resin 3.23%, vinyltrimethoxy silane
0.39%th, hydroxy silicon oil 0.13%, polyester fiber 14.32%, balance of polyster fibre.
The present invention is using the beneficial effect of above-mentioned technical proposal：
（1）The combination switch sealing plate of the dispensing has the advantages that high temperature resistant, corrosion-resistant, light weight and intensity are high；
（2）By mixing and ball milling instrument precise finiss, can cause that raw material mixes more uniform and complete, can effectively reduce the secondary of production
Product rate；
（3）By combination process, can be with the thickness of precise control sealing plate and performance；By MULTILAYER COMPOSITE, can effectively improve
The structural strength and physical property of sealing plate；
（4）Have intensity big by sealing plate obtained in graphitizing method, the advantage of high temperature resistant and light weight；
（5）By coating AFM coating, the Corrosion Protection and anti-wear performance of sealing plate are further increased so that switch
It is adapted to various adverse circumstances.
Specific embodiment
Embodiment 1
The production technology of the combination switch sealing plate of the present embodiment, comprises the following steps：
(i) dispensing:The mass percent of each composition is in the combination switch sealing plate：Crosslinked polyethylene 1.23%, benzene second
Alkene 1.34%, magnesium stearate 1.25%, fulvic acid iron 1.13%, magnesia 0.75%, glass fibre 4.26%, acetylacetone,2,4-pentanedione
1.28%th, polyamide 1.48%, epoxy resin 3.18%, vinyltrimethoxy silane 0.33%, hydroxy silicon oil
0.08%th, polyester fiber 10.67%, balance of polyster fibre；
(ii) crush：The raw material of above-mentioned sealing plate is crushed respectively using pulverizer；
(iii) mixing and ball milling：Raw material is put into mixing and ball milling instrument by the mass percent carries out mixing and ball milling, former after mixing and ball milling
The particle diameter of material is between 850-900 mesh；
(iv) spin：Raw material after mixing and ball milling is heated into spinning, control temperature is between 310-320 DEG C；
(v) by the raw material shredding after spinning, combing, into net；Add acupuncture is carried out in the above-mentioned material input needing machine into after net
Gu, circle around, cut-out, be obtained needle fabric；
(vi) at least two-layer needle fabric is obtained composite by the method for compound-taking-up material-cooling, is combined temperature
It is 130~160 DEG C to spend, and its thickness of composite is 15mm~24mm, and grammes per square metre is 320~560 g/m2；
(vii) by composite by the prepared sealing plate of pre-oxidation-carbonization-graphitizing method, wherein controlling the Pre oxidation to be
, carburizing temperature is controlled for 1500-1600 DEG C, it is 2800-2900 DEG C to control graphitization temperature by 250-300 DEG C；
(viii) outer surface coats AFM coating, and the component of the AFM coating is by mass percentage：Carbon：0.12-
0.15%, chromium：1.2-2.4%, titanium：2.2-3.5%, cobalt：1.5-2.2%, niobium：0.2-0.3%, zinc：1.2-1.5%, samarium：1.5-
1.8%, neodymium：1.2-1.4%, promethium：0.12-0.25%, europium：0.02-0.04%, gadolinium：0.2-0.5%, aluminium：3.3-3.8%, it is balance of
Iron.
Embodiment 2
The production technology of the combination switch sealing plate of the present embodiment, comprises the following steps：
(i) dispensing:The mass percent of each composition is in the combination switch sealing plate：Crosslinked polyethylene 1.26%, benzene second
Alkene 2.57%, magnesium stearate 1.33%, fulvic acid iron 1.17%, magnesia 0.87%, glass fibre 4.57%, acetylacetone,2,4-pentanedione
1.47%th, polyamide 1.67%, epoxy resin 3.23%, vinyltrimethoxy silane 0.39%, hydroxy silicon oil
0.13%th, polyester fiber 14.32%, balance of polyster fibre；
(ii) crush：The raw material of above-mentioned sealing plate is crushed respectively using pulverizer；
(iii) mixing and ball milling：Raw material is put into mixing and ball milling instrument by the mass percent carries out mixing and ball milling, former after mixing and ball milling
The particle diameter of material is between 850-900 mesh；
(iv) spin：Raw material after mixing and ball milling is heated into spinning, control temperature is between 310-320 DEG C；
(v) by the raw material shredding after spinning, combing, into net；Add acupuncture is carried out in the above-mentioned material input needing machine into after net
Gu, circle around, cut-out, be obtained needle fabric；
(vi) at least two-layer needle fabric is obtained composite by the method for compound-taking-up material-cooling, is combined temperature
It is 130~160 DEG C to spend, and its thickness of composite is 15mm~24mm, and grammes per square metre is 320~560 g/m2；
(vii) by composite by the prepared sealing plate of pre-oxidation-carbonization-graphitizing method, wherein controlling the Pre oxidation to be
, carburizing temperature is controlled for 1500-1600 DEG C, it is 2800-2900 DEG C to control graphitization temperature by 250-300 DEG C；
(viii) outer surface coats AFM coating, and the component of the AFM coating is by mass percentage：Carbon：0.12-
0.15%, chromium：1.2-2.4%, titanium：2.2-3.5%, cobalt：1.5-2.2%, niobium：0.2-0.3%, zinc：1.2-1.5%, samarium：1.5-
1.8%, neodymium：1.2-1.4%, promethium：0.12-0.25%, europium：0.02-0.04%, gadolinium：0.2-0.5%, aluminium：3.3-3.8%, it is balance of
Iron.
The present invention is not limited to above-described embodiment.The technical scheme that all use equivalents are formed, all falling within the present invention will
The protection domain asked.
Claims (3)
1. a kind of production technology of combination switch sealing plate, it is characterised in that：Comprise the following steps：
(i) dispensing:The mass percent of each composition is in the combination switch sealing plate：Crosslinked polyethylene 1.23-1.26%,
Styrene 1.34-2.57%, magnesium stearate 1.25-1.33%, fulvic acid iron 1.13-1.17%, magnesia 0.75-
0.87%th, glass fibre 4.26-4.57%, acetylacetone,2,4-pentanedione 1.28-1.47%, polyamide 1.48-1.67%, epoxy resin
3.18-3.23%, vinyltrimethoxy silane 0.33-0.39%, hydroxy silicon oil 0.08-0.13%, polyester fiber 10.67-
14.32%, balance of polyster fibre；
(ii) crush：The raw material of above-mentioned sealing plate is crushed respectively using pulverizer；
(iii) mixing and ball milling：Raw material is put into mixing and ball milling instrument by the mass percent carries out mixing and ball milling, former after mixing and ball milling
The particle diameter of material is between 850-900 mesh；
(iv) spin：Raw material after mixing and ball milling is heated into spinning, control temperature is between 310-320 DEG C；
(v) by the raw material shredding after spinning, combing, into net；Add acupuncture is carried out in the above-mentioned material input needing machine into after net
Gu, circle around, cut-out, be obtained needle fabric；
(vi) at least two-layer needle fabric is obtained composite by the method for compound-taking-up material-cooling, is combined temperature
It is 130~160 DEG C to spend, and its thickness of composite is 15mm~24mm, and grammes per square metre is 320~560 g/m2；
(vii) by composite by the prepared sealing plate of pre-oxidation-carbonization-graphitizing method, wherein controlling the Pre oxidation to be
, carburizing temperature is controlled for 1500-1600 DEG C, it is 2800-2900 DEG C to control graphitization temperature by 250-300 DEG C；
(viii) outer surface coats AFM coating, and the component of the AFM coating is by mass percentage：Carbon：0.12-
0.15%, chromium：1.2-2.4%, titanium：2.2-3.5%, cobalt：1.5-2.2%, niobium：0.2-0.3%, zinc：1.2-1.5%, samarium：1.5-
1.8%, neodymium：1.2-1.4%, promethium：0.12-0.25%, europium：0.02-0.04%, gadolinium：0.2-0.5%, aluminium：3.3-3.8%, it is balance of
Iron.
2. the production technology of combination switch sealing plate according to claim 1, it is characterised in that：The combination switch is used
The mass percent of each composition is in sealing plate：Crosslinked polyethylene 1.23%, styrene 1.34%, magnesium stearate 1.25%, Huang
Humic acid iron 1.13%, magnesia 0.75%, glass fibre 4.26%, acetylacetone,2,4-pentanedione 1.28%, polyamide 1.48%, ring
Oxygen tree fat 3.18%, vinyltrimethoxy silane 0.33%, hydroxy silicon oil 0.08%, polyester fiber 10.67%, it is balance of to wash
Synthetic fibre fiber.
3. the production technology of combination switch sealing plate according to claim 1, it is characterised in that：The combination switch is used
The mass percent of each composition is in sealing plate：Crosslinked polyethylene 1.26%, styrene 2.57%, magnesium stearate 1.33%, Huang
Humic acid iron 1.17%, magnesia 0.87%, glass fibre 4.57%, acetylacetone,2,4-pentanedione 1.47%, polyamide 1.67%, ring
Oxygen tree fat 3.23%, vinyltrimethoxy silane 0.39%, hydroxy silicon oil 0.13%, polyester fiber 14.32%, it is balance of to wash
Synthetic fibre fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611163109.2A CN106739032A (en) | 2016-12-15 | 2016-12-15 | A kind of production technology of combination switch sealing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611163109.2A CN106739032A (en) | 2016-12-15 | 2016-12-15 | A kind of production technology of combination switch sealing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106739032A true CN106739032A (en) | 2017-05-31 |
Family
ID=58892629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611163109.2A Pending CN106739032A (en) | 2016-12-15 | 2016-12-15 | A kind of production technology of combination switch sealing plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106739032A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108045035A (en) * | 2017-12-17 | 2018-05-18 | 苏州赛斯德工程设备有限公司 | A kind of production technology of high intensity file |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805433A (en) * | 2015-04-27 | 2015-07-29 | 苏州统明机械有限公司 | High strength coating for metal surface and preparation method of high strength coating |
| CN105161374A (en) * | 2015-09-07 | 2015-12-16 | 扬中市佳旺华电器有限公司 | Combination switch for looped-network switch cabinet |
-
2016
- 2016-12-15 CN CN201611163109.2A patent/CN106739032A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805433A (en) * | 2015-04-27 | 2015-07-29 | 苏州统明机械有限公司 | High strength coating for metal surface and preparation method of high strength coating |
| CN105161374A (en) * | 2015-09-07 | 2015-12-16 | 扬中市佳旺华电器有限公司 | Combination switch for looped-network switch cabinet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108045035A (en) * | 2017-12-17 | 2018-05-18 | 苏州赛斯德工程设备有限公司 | A kind of production technology of high intensity file |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102251702B (en) | Activated powder concrete pole with high strength and high conductivity and making method thereof | |
| CN105161374A (en) | Combination switch for looped-network switch cabinet | |
| CN105568774B (en) | A kind of high-performance oil-immersed insulating paper and preparation method and application | |
| CN106739032A (en) | A kind of production technology of combination switch sealing plate | |
| CN101457015A (en) | Dicyclopentadiene modified unsaturated polyester resin glass fiber reinforcement molding composition | |
| CN106637670A (en) | Production technology of corrosion-resistant sealing plate | |
| CN106637982A (en) | Production process of high-strength sealing plate | |
| CN105885152A (en) | Community low-voltage grid integrated distribution box and application thereof | |
| CN105600770A (en) | Preparation method and application of carbon fiber reinforced polymer-based composite material | |
| CN102021466A (en) | Method for producing nano alloy cast iron grinding balls by using nano material | |
| CN105385813B (en) | Process and device that a kind of arc-plasma quenches to offline rail | |
| CN101071306A (en) | Intelligent electric control system for electricarc furnace | |
| CN105175986A (en) | Distributor box shell material and application thereof | |
| CN106637986A (en) | Production process of composite sealing plate | |
| CN116377756B (en) | Method for improving interfacial bonding performance of mica and reinforced fiber | |
| CN205069531U (en) | A blend switch for looped netowrk cubical switchboard | |
| CN107858610A (en) | A kind of carbon fiber reinforced magnesium-base composite material and preparation method thereof | |
| CN210297576U (en) | Control panel mounting structure for high-voltage soft starter | |
| CN202150642U (en) | Middle-voltage frequency conversion power frequency transition cabinet | |
| CN207759927U (en) | A kind of rake crane cable protecting device of roller | |
| CN206332436U (en) | Lead door interlock protection circuit for X Ray detecting systems | |
| CN107556609A (en) | A kind of rudder of aircraft composite and preparation method thereof | |
| CN104476031B (en) | A kind of three-phase dc electric welder no-load power-economizing method | |
| CN107492402A (en) | A kind of anti-drag cable core | |
| CN206644376U (en) | Prevent the light-duty machinery stroke of a press from connecting the electrical installation of car |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
|
| RJ01 | Rejection of invention patent application after publication |