CN105420465B - A kind of high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation - Google Patents
A kind of high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation Download PDFInfo
- Publication number
- CN105420465B CN105420465B CN201510796657.8A CN201510796657A CN105420465B CN 105420465 B CN105420465 B CN 105420465B CN 201510796657 A CN201510796657 A CN 201510796657A CN 105420465 B CN105420465 B CN 105420465B
- Authority
- CN
- China
- Prior art keywords
- magnesia
- magnesium
- low
- dope
- mass parts
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Soft Magnetic Materials (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The present invention relates to the magnesia of high magnetic induction grain-oriented silicon steel, specially a kind of high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation, including the extraordinary magnesia that mass parts are 10 15, mass parts are 0.5 1.5 titanium dioxide, mass parts are 0.001 0.005 low-melting compound, low-melting compound is antimonial, mass parts are 0.001 0.005 water-repelling agent, water-repelling agent is silicon powder, mass parts are 80 90 deionized water, mentioned component mixes 60 90 minutes under 1000 1500r/min stirrings, low aquation oxidation magnesium-dope is made in reaction temperature under the conditions of 05 °C.The present invention suppresses magnesia aquation using water-repelling agent, reduces due to Mg (OH)2The water brought between coil of strip, reach the magnesium silicate bottom to form uniformity, ensure the uniformity of coil of strip interlayer dew point, avoid the generation of peroxidating phenomenon.
Description
Technical field
The present invention relates to the magnesia of high magnetic induction grain-oriented silicon steel, the low aquation oxygen of specially a kind of high magnetic induction grain-oriented silicon steel
Change magnesium-dope.
Background technology
High magnetic induction grain-oriented silicon steel is prepared, by the hot rolled plate that Si contents are 2.5-4.0%, makes a practice of, after pickling, is cold rolled into
Product thickness, degreasing then carry out carbonization treatment, and surface forms Fe2SiO4And SiO2Oxide-film, the oxide-film is in decarburization, once
Recrystallization and magnesium silicate bottom play a significant role in being formed.
By magnesia coating preparation into slurry, coating is carried out high coated on steel plate after drying in rolls with rolling method
Temperature annealing, and after through pickling, tension force insulating coating is applied, into finished product after stretching annealing.The formation of magnesium silicate bottom, it is that magnesia applies
The Fe that the main component MgO of material is formed with decarburizing annealing surface2SiO4And SiO2Oxide-film main component between carry out it is anti-
Should.2MgO+SiO2-----Mg2SiO4。
Because in magnesia dope preparing process, hydration reaction occurs for MgO, cause water content increase in coiled material, so as to carry
Dew point between high high-temperature annealing process light plate surface.Magnesium silicate forming process is easily caused to form point-like dew gold and peroxide
Change phenomenon.Each manufacturer is produced to improve production efficiency using increase width of steel coil and big volume, in coil of strip temperature-rise period
Because temperature difference causes thermal expansion and the difference shunk, the dew point between steel plate is caused larger difference to be present.For MgO aquations
The solution of problem, Japanese Unexamined Patent Publication 2650817 propose to use inactive MgO, MgO to have the 40%CAA of 100-400 seconds
Value, average grain diameter stir 60 minutes under the conditions of being 2.5 microns, 20 DEG C, and aquation rate is less than 2.5%, and the program passes through low activity MgO
The generation of other oxidations is inhibited, obtains the magnesium silicate bottom of surface color uniformity.But MgO reactivities reduce
Afterwards, the thickness and the adhesion issues of coating that magnesium silicate bottom is formed are affected.Patent 201310026686.7 proposes one
The formulation for coating material of kind orientation silicon steel barrier coat, it is mixed with nano magnesia using light magnesium oxide, it is higher to obtain fine and close hardness
Magnesium silicate bottom, but do not stated for various surface defects caused by aquation rate problem and steel plate peroxidating.
The content of the invention
The present invention ensures the reactivity of magnesia to solve the technical problem of magnesia aquation in the prior art,
Provide a kind of high magnetic induction grain-oriented silicon steel and aoxidize magnesium-dope with low aquation.
The present invention adopts the following technical scheme that realization：A kind of high magnetic induction grain-oriented silicon steel is applied with low aquation magnesia
Material, including mass parts be 10-15 extraordinary magnesia, mass parts be 0.5-1.0 titanium dioxide, mass parts 0.001-
0.005 low-melting compound, low-melting compound are antimonial, and mass parts are 0.001-0.005 water-repelling agent, water-repelling agent
For silicon powder, mass parts are 80-90 deionized water, and mentioned component mixes 60-90 under 1000-1500r/min stirrings
Minute, low aquation oxidation magnesium-dope is made in reaction temperature under the conditions of 0-5 DEG C.
Titanium dioxide mass parts are 0.5-1.0 in formulation for coating material.The high annealing stage, at 900-1000 DEG C, titanium dioxide
Oxygen is discharged, improves the atmosphere between coil of strip, promotes the reaction of magnesium silicate bottom, is reduced after steel plate aluminium spreads to silicic acid magnesium film shadow
Ring.When titanium dioxide is less than 0.5 part in formulation for coating material, at 900-1000 DEG C, titanium dioxide discharges that oxygen is few, and magnesium silicate bottom is anti-
Should be insufficient, bottom tack is deteriorated.When titanium dioxide mass parts are higher than 1 in formulation for coating material, at 900-1000 DEG C, anatase titanium dioxide two
It is more that titanium oxide discharges oxygen, and local peroxidating aggravates, and magnesium silicate primary colour uniformity is deteriorated.
Low-melting compound is antimonial.Low-melting compound forms melting layer in cold stage in surface of steel plate, makes
Obtain magnesia and reacted at a lower temperature with surface of steel plate melting layer, promote the reaction of magnesium silicate bottom to carry out, pressed down
Oxygenerating or nitrification.When low-melting compound is less than 0.001 part, it will be unable to obtain enough fused mass promotion magnesium silicate bottoms
Layer reacts under low-temperature condition.When low-melting compound is higher than 0.005 part, low melting point excessively occurs, and easily causes local Cheng Rong
Change defect, the surface defects such as point-like dew gold occur.
Water-repelling agent is silicon powder.Water-repelling agent can form cladding group in mgo surface in masking liquid process for preparation, suppress
The hydrolysis of magnesia so that the moisture that magnesium oxide coating is brought between coil of strip is reduced.Suppress coil of strip peroxidating phenomenon.When hydrophobic
When agent addition is less than 0.001 part, it is less to form cladding group in mgo surface, it is impossible to the hydrolysis of magnesia is prevented,
Dew point is high between coil of strip, easily produces peroxidating phenomenon.When water-repelling agent addition is higher than 0.005 part, contain in magnesium oxide coating
Excessive silicon powder so that magnesium silicate bottom is loose, causes tack to decline.
A kind of above-mentioned high magnetic induction grain-oriented silicon steel with low aquation aoxidize magnesium-dope, special type oxidation magnesium component include magnesia,
The content of calcium oxide, sulfate and chloride, wherein calcium oxide is 0.2-0.4%, and the content of sulfate is 0.2-0.5%, chlorine
The content of compound is 0.1-0.2%, and the content of magnesia is not less than 97%, and remaining is impurity.
Content of magnesia is less than 97%, and impurity content is too high, influences the magnetic property and surface quality of high magnetic induction grain-oriented silicon steel.
Calcium oxide content is less than 0.2%, and magnetic strength reduces, and during higher than 0.4%, suppresses the formation of magnesium silicate bottom.
A kind of above-mentioned high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation, and the magnesia in extraordinary magnesia is by 50-
95% activated magnesia and the nonactive magnesia compositions of 5-50%, activated magnesia have the 40%CAA values and 1-5 of 50-80 seconds
Micron average grain diameter, nonactive magnesia have the 40%CAA values and 10-15 micron average grain diameters of 120--200 seconds.
Magnesia is made up of activated magnesia and the mixing of nonactive magnesia.When wherein nonactive magnesia is less than 5%, oxygen
Change magnesium granules degree is smaller, coil of strip thermal expansion and contraction process, slides and is deteriorated between steel plate, easily produces wrinkle defect.Simultaneously because
Activated magnesia is more, and hydrolysis degree increases, and aquation rate rises, and easily produces coil of strip part peroxidating phenomenon and point-like dew gold lacks
Fall into.When nonactive magnesia is higher than 50%, the coating for aoxidizing magnesium-dope declines, and coating adherence reduces, the reaction of magnesia
Property decline, magnesium silicate bottom forms relatively thin.
A kind of above-mentioned high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation, and titanium dioxide is anatase titanium dioxide,
Titanium dioxide purity is not less than 97%, meso-position radius D50:1-2 microns.
A kind of above-mentioned high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation, and activated magnesia has sheet and strip oxygen
Change magnesium granules, nonactive magnesia has circular and granular magnesium oxide particle.
The present invention suppresses magnesia aquation using water-repelling agent, reduces due to Mg (OH)2The water brought between coil of strip, reaches shape
Into the magnesium silicate bottom of uniformity, ensure the uniformity of coil of strip interlayer dew point, avoid the generation of peroxidating phenomenon.
Experiment：Each oxidation magnesium-dope contrast test
Will contain in terms of weight % 0.006~0.008%C, 2.8-3.5%Si, 0.006-0.007%Mn, 0.020~
0.025%S, 0.025~0.030%Al, 0.0075~0.0085%N, remaining is the high magnetic of Fe and other inevitable impurity
Feel directional silicon steel and carry out hot rolling, normalizing annealing, be cold rolled to 0.30mm final thickness, through decarburizing annealing, coating magnesia applies
Expect (composition is as shown in table 1), coated weight presses 6.5g/mm2(powder dry weight), coiled, progress high annealing is dried, painting, which is insulated, to be applied
Layer, finished product sentence level.
Table 1
Embodiment
Embodiment one：
A kind of high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation, including the extraordinary magnesia that quality is 10kg, quality
For 0.5kg titanium dioxide, quality is 0.001kg antimony sulfate, and quality be 0.001kg silicon powders, quality for 80kg go from
Sub- water, mentioned component mix 60 minutes under 1000r/min stirrings, and low aquation oxygen is made in reaction temperature under the conditions of 0 DEG C
Change magnesium-dope；The content of calcium oxide is 0.02kg (or 0.03kg or 0.04kg) in extraordinary magnesia, and the content of sulfate is
0.02kg (or 0.03kg or 0.05kg), the content of chloride are 0.01kg (or 0.015kg or 0.02kg), the content of magnesia
For 9.9kg (or 9.8kg or 9.7kg), the content of impurity is 0.05kg (or 0.125kg or 0.19kg), and magnesia is by 4.95kg
(or 4.9kg or 4.85kg) activated magnesia and the nonactive magnesia compositions of 4.95kg (or 4.9kg or 4.85kg), active oxidation
Magnesium has the 40%CAA values and 1-5 micron average grain diameters of 50 seconds, and nonactive magnesia is with the 40%CAA values of 120 seconds and 10-
15 microns of average grain diameters.
Embodiment two：
A kind of high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation, including the extraordinary magnesia that quality is 12kg, quality
For 0.8kg titanium dioxide, quality is 0.003kg antimony sulfate, and quality be 0.003kg silicon powders, quality for 85kg go from
Sub- water, mentioned component mix 75 minutes under 1300r/min stirrings, and low aquation oxygen is made in reaction temperature under the conditions of 3 DEG C
Change magnesium-dope；The content of calcium oxide is 0.024kg (or 0.036kg or 0.048kg) in extraordinary magnesia, and the content of sulfate is
0.024kg (or 0.036kg or 0.06kg), the content of chloride is 0.012kg (or 0.018kg or 0.024kg), magnesia
Content is 11.88kg (or 11.76kg or 11.64kg), and the content of impurity is 0.06kg (or 0.15kg or 0.228kg), oxidation
Magnesium is nonactive by 8.316kg (or 8.232kg or 8.148kg) activated magnesias and 3.564kg (or 3.528kg or 3.492kg)
Magnesia forms, and activated magnesia has the 40%CAA values and 1-5 micron average grain diameters of 65 seconds, and nonactive magnesia has 160
The 40%CAA values and 10-15 micron average grain diameters of second.
Embodiment three：
A kind of high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation, including the extraordinary magnesia that quality is 15kg, quality
For 1.0kg titanium dioxide, quality is 0.005kg antimony sulfate, and quality be 0.005kg silicon powders, quality for 90kg go from
Sub- water, mentioned component mix 90 minutes under 1500r/min stirrings, and low aquation oxygen is made in reaction temperature under the conditions of 5 DEG C
Change magnesium-dope；The content of calcium oxide is 0.03kg (or 0.045kg or 0.06kg) in extraordinary magnesia, and the content of sulfate is
0.03kg (or 0.045kg or 0.075kg), the content of chloride is 0.015kg (or 0.0225kg or 0.03kg), magnesia
Content is 14.85kg (or 14.7kg or 14.55kg), and the content of impurity is 0.075kg (or 0.1875kg or 0.285kg), oxygen
Change magnesium by 14.1075kg (or 13.965kg or 13.8225kg) activated magnesias and 0.7425kg (or 0.735kg or
0.7275kg) nonactive magnesia composition, activated magnesia has the 40%CAA values and 1-5 micron average grain diameters of 80 seconds, non-live
Property magnesia there is the 40%CAA values and 10-15 micron average grain diameters of 200 seconds.
Claims (4)
1. a kind of high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation, it is characterised in that including the special type that mass parts are 10-15
Magnesia, mass parts be 0.5-1.0 titanium dioxide, mass parts be 0.001-0.005 low-melting compound, low melting point chemical combination
Thing is antimonial, and mass parts are 0.001-0.005 water-repelling agent, and water-repelling agent is silicon powder, and mass parts are 80-90 deionization
Water, mentioned component mix 60-90 minutes under 1000-1500r/min stirrings, and reaction temperature is made under the conditions of 0-5 °C
Low aquation aoxidizes magnesium-dope, and extraordinary magnesia chemical composition is made up of magnesia, calcium oxide, sulfate and chloride, wherein oxygen
The content for changing calcium is 0.2-0.4%, and the content of sulfate is 0.2-0.5%, and the content of chloride is 0.1-0.2%, and remaining is oxidation
Magnesium.
2. a kind of high magnetic induction grain-oriented silicon steel according to claim 1 aoxidizes magnesium-dope with low aquation, it is characterised in that extraordinary
Magnesia in magnesia is made up of 50-95% activated magnesias and the nonactive magnesia of 5-50%, and activated magnesia has 50-80
The 40%CAA values and 1-5 micron average grain diameters of second, nonactive magnesia have the 40%CAA values and 10-15 microns of 120-200 seconds
Average grain diameter.
3. a kind of high magnetic induction grain-oriented silicon steel according to claim 1 or 2 aoxidizes magnesium-dope with low aquation, it is characterised in that two
Titanium oxide is anatase titanium dioxide, and titanium dioxide purity is not less than 97%, meso-position radius D50:1-2 microns.
4. a kind of high magnetic induction grain-oriented silicon steel according to claim 2 aoxidizes magnesium-dope with low aquation, it is characterised in that activity
Magnesia has sheet and strip magnesium oxide particle, and nonactive magnesia has circular and granular magnesium oxide particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510796657.8A CN105420465B (en) | 2015-11-18 | 2015-11-18 | A kind of high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510796657.8A CN105420465B (en) | 2015-11-18 | 2015-11-18 | A kind of high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105420465A CN105420465A (en) | 2016-03-23 |
| CN105420465B true CN105420465B (en) | 2017-12-08 |
Family
ID=55498999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510796657.8A Active CN105420465B (en) | 2015-11-18 | 2015-11-18 | A kind of high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105420465B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107746929A (en) * | 2017-11-23 | 2018-03-02 | 武汉钢铁有限公司 | High magnetic induction grain-oriented silicon steel annealing agent and preparation method and its application on aquation rate is reduced |
| CN108193032B (en) * | 2017-12-30 | 2019-11-15 | 新万鑫（福建）精密薄板有限公司 | A kind of magnesia annealing separating agent and coating processes improving orientation silicon steel surface quality |
| CN109628717B (en) * | 2018-12-10 | 2020-09-29 | 首钢智新迁安电磁材料有限公司 | Method for manufacturing low-temperature high-magnetic-induction oriented silicon steel with excellent bottom layer |
| CN111186850B (en) * | 2019-12-27 | 2022-12-16 | 南京宝淳新材料科技有限公司 | Magnesium oxide for oriented silicon steel annealing separant and preparation method thereof |
| CN111943262A (en) * | 2020-08-24 | 2020-11-17 | 山西银圣科技有限公司 | Preparation method of titanium dioxide special for oriented silicon steel |
| CN114645126B (en) * | 2022-03-09 | 2024-06-25 | 山西银圣科技有限公司 | Ordinary oriented silicon steel magnesium oxide isolating agent and preparation method and application thereof |
| CN114854960B (en) * | 2022-03-30 | 2023-09-05 | 武汉钢铁有限公司 | Annealing isolating agent for reducing surface defects of oriented silicon steel and use method thereof |
| CN114717401A (en) * | 2022-04-14 | 2022-07-08 | 无锡普天铁心股份有限公司 | Method for improving point-like gold exposure on surface of oriented silicon steel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6014105B2 (en) * | 1982-10-07 | 1985-04-11 | 新日本製鐵株式会社 | Method of applying annealing separator to grain-oriented electrical steel sheets |
| US5192373A (en) * | 1989-09-08 | 1993-03-09 | Armco, Inc. | Magnesium oxide coating for electrical steels and the method of coating |
| KR100762436B1 (en) * | 2006-10-18 | 2007-10-02 | 주식회사 포스코 | Annealing separating agent for grain oriented silicon steel sheet excellent in surface characteristic and production method of grain oriented silicon steel sheet using the same |
| CN103114181A (en) * | 2013-01-24 | 2013-05-22 | 广东盈泉钢制品有限公司 | Coating formula of oriented silicon steel barrier coat |
-
2015
- 2015-11-18 CN CN201510796657.8A patent/CN105420465B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105420465A (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105420465B (en) | A kind of high magnetic induction grain-oriented silicon steel aoxidizes magnesium-dope with low aquation | |
| US9194016B2 (en) | Annealing separator for grain-oriented electromagnetic steel sheet | |
| US10648083B2 (en) | Pre-coating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet comprising same, and manufacturing method therefor | |
| CN102851446A (en) | Multilayer-structured calcium-core wire, and manufacturing method and purpose thereof | |
| CN103114181A (en) | Coating formula of oriented silicon steel barrier coat | |
| KR0157539B1 (en) | Annealing separator having excellent reactivity for grain-oriented electrical steel sheet and method of use the same | |
| CN106319174B (en) | Improve the annealing separating agent of low temperature casting blank heating high magnetic induction grain-oriented silicon steel bottom layer quality | |
| CN112522613B (en) | High-magnetic-induction oriented silicon steel with excellent bottom layer quality and production method thereof | |
| CN107746929A (en) | High magnetic induction grain-oriented silicon steel annealing agent and preparation method and its application on aquation rate is reduced | |
| JP5418844B2 (en) | Method for producing grain-oriented electrical steel sheet | |
| CN1171823A (en) | Process for producing directional electrical sheet excellent in glass coating and magnetic properties | |
| CN109306198A (en) | For improving the masking liquid and preparation method thereof of high magnetic induction grain-oriented silicon steel magnesium silicate bottom layer quality | |
| WO2020138373A1 (en) | Annealing separation agent for grain-oriented electrical steel sheet and method for producing grain-oriented electrical steel sheet | |
| JP3650525B2 (en) | Annealing separator for grain-oriented electrical steel sheet and method for producing grain-oriented electrical steel sheet with excellent magnetic properties with glass coating | |
| JP4698448B2 (en) | MgO for grain-oriented electrical steel sheet and method for producing grain-oriented electrical steel sheet with excellent magnetic properties and glass coating properties using the same | |
| CN115679064A (en) | Method for manufacturing oriented electrical steel with excellent surface | |
| CN109371323A (en) | A kind of novel 51CrV4 special type steel alloy and its preparation process | |
| JP3091096B2 (en) | Annealing separator and slurry for grain-oriented electrical steel sheet to obtain excellent glass coating and magnetic properties | |
| JP4310996B2 (en) | Method for producing grain-oriented electrical steel sheet and annealing separator used in this method | |
| JPH0225433B2 (en) | ||
| JP6939767B2 (en) | Annealing separator for grain-oriented electrical steel sheets and manufacturing method of grain-oriented electrical steel sheets | |
| JP3091088B2 (en) | Annealing separation agent having extremely excellent reactivity and method of using the same | |
| JP2749783B2 (en) | Manufacturing method of grain-oriented electrical steel sheet with extremely excellent glass coating performance and magnetic properties | |
| CN116083701B (en) | High-magnetic-induction oriented silicon steel with excellent surface and preparation method thereof | |
| CN114045385B (en) | Method for improving adhesiveness of low-temperature high-magnetic-induction oriented silicon steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 032700 the riverside road north of hhun County, Jinzhong, Shanxi Patentee after: Shanxi silver Saint Technology Co., Ltd. Address before: 032700 the riverside road north of hhun County, Jinzhong, Shanxi Patentee before: Heshun Yinsheng Chemical Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |