CN110256113A - A kind of ceramic large area overglaze color anticracking color technique of white clouds soil - Google Patents

A kind of ceramic large area overglaze color anticracking color technique of white clouds soil Download PDF

Info

Publication number
CN110256113A
CN110256113A CN201910584569.XA CN201910584569A CN110256113A CN 110256113 A CN110256113 A CN 110256113A CN 201910584569 A CN201910584569 A CN 201910584569A CN 110256113 A CN110256113 A CN 110256113A
Authority
CN
China
Prior art keywords
color
ceramic
white clouds
glaze
clouds soil
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
Application number
CN201910584569.XA
Other languages
Chinese (zh)
Inventor
吴细桂
吴帆
洪德清
吴清权
胡碧波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Yicheng Ceramic Industry Co Ltd
Original Assignee
Guangdong Yicheng Ceramic Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangdong Yicheng Ceramic Industry Co Ltd filed Critical Guangdong Yicheng Ceramic Industry Co Ltd
Priority to CN201910584569.XA priority Critical patent/CN110256113A/en
Publication of CN110256113A publication Critical patent/CN110256113A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C8/00Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/52Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81Coating or impregnation
    • C04B41/89Coating or impregnation for obtaining at least two superposed coatings having different compositions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Finishing Walls (AREA)

Abstract

The present invention relates to ceramic overglaze color techniques, more particularly to a kind of ceramic large area overglaze color anticracking color technique of white clouds soil, include the following steps as follows: S1: carrying out biscuiting for white clouds soil ceramic body, and the green body after biscuiting is immersed ground coat enamel, it pulls out again air-dried, obtains ceramic glazed body;S2: in the glazed body uppermost spray glaze water that must draw overglaze color, the glaze aqueous fusion point is higher than ground coat enamel described in step S1;S3:, will be smooth at glaze spraying water above glazed body after spray is good;S4: enamel colour is drawn to above through above-mentioned steps treated glazed body;S5: add one layer of white clouds soil clear frit of spray above the glazed body after step S4 to be drawn to coloured silk again;S6: glazed body made from step S5 is entered into kiln Low fire ceramic.It allows complicated ceramic production technology to become simply the present invention provides a kind of, and is avoided that the white clouds soil large area overglaze color anticracking color technique because of the scrap of the product problem that repeatedly firing generates.

Description

A kind of ceramic large area overglaze color anticracking color technique of white clouds soil
Technical field
The present invention relates to ceramic overglaze color techniques, and in particular to a kind of ceramic large area overglaze color anticracking color work of white clouds soil Skill.
Background technique
In existing ceramic production technology, pursue bright-colored nature, overglaze color, overlapping coloured silk are increasingly loved by consumers, Because taking marble paper technique, flower face is inflexible, and does not have three-dimensional sense, takes gimmick that folded color is added to be easy to split color again, jump color, and can not big face Product operation (existing ceramic industry can not be in additive color glaze direct on white clouds clay glaze material) because ground coat enamel contraction when can by colorant drawing crack on glaze, Lead to not once-firing, and greatly reduces production efficiency and cost.
The technique now taken is glazing glaze firing, then on glazed body after isolating out the position for needing to paint before ceramics are fired by glaze The position painted will be needed to fill out colorant;However this technology process is complicated, and the integration of two kinds of glaze is bad, while again big The adhesive force for reducing colorant greatly, is unable to reach effect.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art described above, provides and a kind of allow complicated ceramic production technology Become simple, and is avoided that the white clouds soil large area overglaze color anticracking color technique because of the scrap of the product problem that repeatedly firing generates.
To achieve the above object, technical scheme is as follows:
A kind of ceramic large area overglaze color anticracking color technique of white clouds soil, includes the following steps as follows:
S1: carrying out biscuiting for white clouds soil ceramic body, the green body after biscuiting is immersed ground coat enamel, then pull out air-dried, obtains ceramic glaze Base;
S2: in the glazed body uppermost spray glaze water that must draw overglaze color, the glaze aqueous fusion point is higher than ground coat enamel described in step S1;
S3:, will be smooth at glaze spraying water above glazed body after spray is good;
S4: enamel colour is drawn to above through above-mentioned steps treated glazed body;
S5: add one layer of white clouds soil clear frit of spray above the glazed body after step S4 to be drawn to coloured silk again;
S6: glazed body made from step S5 is entered into kiln Low fire ceramic.
The glaze water that the present invention adds one layer of firing temperature of spray higher than ground coat enamel by that must draw the place of overglaze color above ground coat enamel, solution Having determined ceramic industry can not (can will be on glaze because shrinking when ground coat enamel firing the direct additive color glaze of large area on white clouds clay glaze material the problem of Colorant drawing crack);By adding one layer of white clouds soil clear frit of spray again on drawing the glazed body after coloured silk, make ceramic surface glossy, after firing Ceramic product it is beautiful, make up plus dumb light defect caused by the glaze water conservation film of spray is not achieved because of firing temperature.
Preferably, biscuiting temperature described in step S1 is 900-1000 DEG C, and the biscuiting time is 5-6h, and the ground coat enamel is White clouds soil clear frit (firing temperature is 1000 DEG C).
Preferably, air-dried temperature described in step S1 is normal room temperature, air-dry time 1.5-2.5h.
Further, glaze water described in step S2 is by medium temperature clear frit and white clouds soil clear frit with the ratio of 1:4.5-6.5 Example mixes.
Further, the medium temperature clear frit is mixed by glaze and water in the ratio of 1:2-3.5.
Further, the glaze of the medium temperature clear frit by following raw material by weight: lithium porcelain stone 30- 50 parts, receive 5-20 parts of feldspar, 5-15 parts of calcium carbonate, 1-10 parts of dolomite, 10-20 parts of kaolin, 15-30 parts quartzy, porcelain mud 1-3 Part, 0.1-1 parts of soda ash.
Preferably, the firing temperature of the medium temperature clear frit is 1150-1250 DEG C.
Preferably, glaze coolant-temperature gage described in step S2 is 20 DEG C -40 DEG C.
Preferably, even fashion described in step S3 can dip in water band mistake for writing brush.By at glazed body glaze spraying it is smooth be for The particle left when control glaze spraying, prevention flash generate
Preferably, firing temperature described in step S6 is 900 DEG C -1100 DEG C, firing time 6-8h.
The utility model has the advantages that
1, the present invention can not only apply to industrialized production, and tool reduces labor intensity, and complicated technique is allowed to become simple advantage, The scrap of the product and not attached color defect that repeatedly firing generates are avoided simultaneously, disposably solve process difficulties.
2, the present invention is the primary raw material of ceramic glazed body with white clouds soil, adds the glaze water conservation film fusing point of spray compared with ground coat enamel height, warp Test proves, adds in the ceramic large area overglaze color sintering procedure of white clouds soil of glaze spraying water conservation film that glaze is complete, will not split color.It is logical The ceramics of technique production are crossed, it is bright-colored naturally, ceramic beautiful and glossiness is good.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.
Embodiment 1:
A kind of ceramic large area overglaze color anticracking color technique of white clouds soil, includes the following steps as follows:
S1: carrying out 900 DEG C of biscuitings for white clouds soil ceramic body, the green body after biscuiting is immersed ground coat enamel, then pull out air-dried, is made pottery Enamel base;
S2: in the glazed body uppermost spray glaze water that must draw overglaze color, the glaze aqueous fusion point is higher than ground coat enamel described in step S1;
S3:, will be smooth at glaze spraying water above glazed body after spray is good;
S4: enamel colour is drawn to above through above-mentioned steps treated glazed body;
S5: add one layer of white clouds soil clear frit of spray above the glazed body after step S4 to be drawn to coloured silk again;
S6: glazed body made from step S5 is entered into kiln Low fire ceramic, firing temperature is 900 DEG C, firing time 6h.
The present invention is the primary raw material of ceramic glazed body with white clouds soil, adds the glaze water conservation film fusing point of spray compared with ground coat enamel height, through trying It verifies bright, adds in the ceramic large area overglaze color sintering procedure of white clouds soil of glaze spraying water conservation film that glaze is complete, color will not be split.Pass through The ceramics of technique production, it is bright-colored naturally, ceramic beautiful and glossiness is good.
Embodiment 2:
A kind of ceramic large area overglaze color anticracking color technique of white clouds soil, includes the following steps as follows:
S1: carrying out 900 DEG C of biscuitings for white clouds soil ceramic body, and the biscuiting time is 5h, the green body after biscuiting is immersed ground coat enamel, then fish out 1.5h is air-dried in normal room temperature out, obtains ceramic glazed body;
S2: in the glazed body uppermost spray glaze water that must draw overglaze color, the glaze aqueous fusion point is higher than ground coat enamel described in step S1;
Wherein: the glaze water is mixed by medium temperature clear frit and white clouds soil clear frit with the ratio of 1:4.5;In described Warm clear frit is formed by glaze and water in the ratio mixed grinding of 1:2;The glaze is by following raw material group according to parts by weight At: 30 parts of lithium porcelain stone, receive 5 parts of feldspar, 5 parts of calcium carbonate, 1 part of dolomite, 10 parts of kaolin, 15 parts of quartz, 1 part of porcelain mud, soda ash 0.1 part;The firing temperature of the medium temperature clear frit is 1150-1250 DEG C;
S3:, will be smooth at glaze spraying water above glazed body after spray is good;
S4: enamel colour is drawn to above through above-mentioned steps treated glazed body;
S5: add one layer of white clouds soil clear frit of spray above the glazed body after step S4 to be drawn to coloured silk again;
S6: glazed body made from step S5 is entered into kiln Low fire ceramic, firing temperature is 900 DEG C, firing time 6h.
Embodiment 3:
A kind of ceramic large area overglaze color anticracking color technique of white clouds soil, includes the following steps as follows:
S1: carrying out 950 DEG C of biscuitings for white clouds soil ceramic body, and the biscuiting time is 5.5h, and the green body after biscuiting is immersed white clouds soil It in clear frit, then pulls out and air-dries 2h in normal room temperature, obtain ceramic glazed body;
S2: in the glazed body uppermost spray glaze water that must draw overglaze color, the glaze aqueous fusion point is higher than ground coat enamel described in step S1;
Wherein: the glaze water is mixed by medium temperature clear frit and white clouds soil clear frit with the ratio of 1:5.5;In described Warm clear frit is formed by glaze and water in the ratio mixed grinding of 1:2.5;The glaze by following raw material according to parts by weight Composition:, receiving 10 parts of feldspar by 40 parts of lithium porcelain stone, and 10 parts of calcium carbonate, 5 parts of dolomite, 15 parts of kaolin, 20 parts of quartz, 2 parts of porcelain mud, 0.5 part of soda ash;The firing temperature of the medium temperature clear frit is 1150-1250 DEG C;
S3: after spray is good, water band mistake will be dipped in writing brush at glaze spraying water above glazed body, controls the particle left when glaze spraying, prevents flash It generates;
S4: enamel colour is drawn to above through above-mentioned steps S3 treated glazed body;
S5: add one layer of white clouds soil clear frit of spray above the glazed body after step S4 to be drawn to coloured silk again;
S6: glazed body made from step S5 is entered into kiln Low fire ceramic, firing temperature is 1000 DEG C, firing time 7h.
Embodiment 4:
A kind of ceramic large area overglaze color anticracking color technique of white clouds soil, includes the following steps as follows:
S1: carrying out 1000 DEG C of biscuitings for white clouds soil ceramic body, and the biscuiting time is 6h, and the green body after biscuiting is immersed white clouds soil thoroughly It in bright glaze, then pulls out and air-dries 2.5h in normal room temperature, obtain ceramic glazed body;
S2: in the glazed body uppermost spray glaze water that must draw overglaze color, the glaze aqueous fusion point is higher than ground coat enamel described in step S1;
Wherein: the glaze water is mixed by medium temperature clear frit and white clouds soil clear frit with the ratio of 1:6.5;In described Warm clear frit is formed by glaze and water in the ratio mixed grinding of 1:3.5;The glaze by following raw material according to parts by weight Composition:, receiving 20 parts of feldspar by 50 parts of lithium porcelain stone, and 15 parts of calcium carbonate, 10 parts of dolomite, 20 parts of kaolin, 30 parts of quartz, 3 parts of porcelain mud, 1 part of soda ash;The firing temperature of the medium temperature clear frit is 1150-1250 DEG C;
S3: after spray is good, water band mistake will be dipped in writing brush at glaze spraying water above glazed body, controls the particle left when glaze spraying, prevents flash It generates;
S4: enamel colour is drawn to above through above-mentioned steps S3 treated glazed body;
S5: add one layer of white clouds soil clear frit of spray above the glazed body after step S4 to be drawn to coloured silk again;
S6: glazed body made from step S5 is entered into kiln Low fire ceramic, firing temperature is 1100 DEG C, firing time 8h.
Finally, it should be noted that obviously, the above embodiment is merely an example for clearly illustrating the present invention, and simultaneously The non-restriction to embodiment.For those of ordinary skill in the art, it can also do on the basis of the above description Other various forms of variations or variation out.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn The obvious changes or variations that Shen goes out are still in the protection scope of this invention.

Claims (7)

1. a kind of ceramic large area overglaze color anticracking color technique of white clouds soil, which is characterized in that include the following steps as follows:
S1: carrying out biscuiting for white clouds soil ceramic body, the green body after biscuiting is immersed ground coat enamel, then pull out air-dried, obtains ceramic glaze Base;
S2: in the glazed body uppermost spray glaze water that must draw overglaze color, the glaze aqueous fusion point is higher than ground coat enamel described in step S1;
S3:, will be smooth at glaze spraying water above glazed body after spray is good;
S4: enamel colour is drawn to above through above-mentioned steps treated glazed body;
S5: add one layer of white clouds soil clear frit of spray above the glazed body after step S4 to be drawn to coloured silk again;
S6: glazed body made from step S5 is entered into kiln Low fire ceramic.
2. a kind of ceramic large area overglaze color anticracking color technique of white clouds soil as described in claim 1, which is characterized in that step S1 Described in biscuiting temperature be 900-1000 DEG C, the biscuiting time be 5-6h.
3. a kind of ceramic large area overglaze color anticracking color technique of white clouds soil as described in claim 1, which is characterized in that step S2 Described in glaze water mixed by medium temperature clear frit and white clouds soil clear frit with the ratio of 1:4.5-6.5.
4. a kind of ceramic large area overglaze color anticracking color technique of white clouds soil as claimed in claim 3, which is characterized in that described Medium temperature clear frit is mixed by glaze and water in the ratio of 1:2-3.5.
5. a kind of ceramic large area overglaze color anticracking color technique of white clouds soil as claimed in claim 4, which is characterized in that described The glaze of medium temperature clear frit by following raw material by weight: 30-50 parts of lithium porcelain stone, receive 5-20 parts of feldspar, calcium carbonate It is 5-15 parts, 1-10 parts of dolomite, 10-20 parts of kaolin, 15-30 parts quartzy, 1-3 parts of porcelain mud, 0.1-1 parts of soda ash.
6. a kind of ceramic large area overglaze color anticracking color technique of white clouds soil as claimed in claim 3, which is characterized in that described The firing temperature of medium temperature clear frit is 1150-1250 DEG C.
7. a kind of ceramic large area overglaze color anticracking color technique of white clouds soil as described in claim 1, which is characterized in that step S6 Described in firing temperature be 900 DEG C -1100 DEG C, firing time 6-8h.
CN201910584569.XA 2019-07-01 2019-07-01 A kind of ceramic large area overglaze color anticracking color technique of white clouds soil Pending CN110256113A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910584569.XA CN110256113A (en) 2019-07-01 2019-07-01 A kind of ceramic large area overglaze color anticracking color technique of white clouds soil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910584569.XA CN110256113A (en) 2019-07-01 2019-07-01 A kind of ceramic large area overglaze color anticracking color technique of white clouds soil

Publications (1)

Publication Number Publication Date
CN110256113A true CN110256113A (en) 2019-09-20

Family

ID=67923543

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910584569.XA Pending CN110256113A (en) 2019-07-01 2019-07-01 A kind of ceramic large area overglaze color anticracking color technique of white clouds soil

Country Status (1)

Country Link
CN (1) CN110256113A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1699291A (en) * 2005-04-20 2005-11-23 湖南泰鑫瓷业有限公司 Method for scraping shift printing pattern and spray painting on priming coat of ceramic products
CN1724271A (en) * 2004-07-23 2006-01-25 卢永錩 Polished ceramic tile with colour decorating glaze and its preparation method and equipment
CN102417373A (en) * 2011-09-06 2012-04-18 佛山市三水新明珠建陶工业有限公司 Manufacture method of non-aqueous printing ink wet underglaze colour self-sharpening polishing ceramic glazed tile
CN103626522A (en) * 2013-11-25 2014-03-12 张柳松 Preparation technology of colored glaze encaustic
CN104230392A (en) * 2014-09-16 2014-12-24 淄博格伦凯陶瓷有限公司 Microcrystal mirror polishing wall tile and manufacturing method thereof
CN106467414A (en) * 2016-09-27 2017-03-01 阜阳科技工程学校 Boundary's head ancient painted pottery underglaze colour processing technology
CN106630633A (en) * 2016-12-28 2017-05-10 广东宏陶陶瓷有限公司 Underglaze five-color polished and glazed tile and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1724271A (en) * 2004-07-23 2006-01-25 卢永錩 Polished ceramic tile with colour decorating glaze and its preparation method and equipment
CN1699291A (en) * 2005-04-20 2005-11-23 湖南泰鑫瓷业有限公司 Method for scraping shift printing pattern and spray painting on priming coat of ceramic products
CN102417373A (en) * 2011-09-06 2012-04-18 佛山市三水新明珠建陶工业有限公司 Manufacture method of non-aqueous printing ink wet underglaze colour self-sharpening polishing ceramic glazed tile
CN103626522A (en) * 2013-11-25 2014-03-12 张柳松 Preparation technology of colored glaze encaustic
CN104230392A (en) * 2014-09-16 2014-12-24 淄博格伦凯陶瓷有限公司 Microcrystal mirror polishing wall tile and manufacturing method thereof
CN106467414A (en) * 2016-09-27 2017-03-01 阜阳科技工程学校 Boundary's head ancient painted pottery underglaze colour processing technology
CN106630633A (en) * 2016-12-28 2017-05-10 广东宏陶陶瓷有限公司 Underglaze five-color polished and glazed tile and preparation method thereof

Similar Documents

Publication Publication Date Title
CN111574245B (en) 3D (three-dimensional) dazzling ceramic tile and preparation method thereof
CN105712701B (en) A kind of single layer glaze transmutation brick and preparation method thereof
US8377560B2 (en) Glaze composition
CN105777089B (en) A kind of transparent brick and preparation method thereof
CN106396638B (en) Low temperature lightweight lime gradual change glaze ceramics and its manufacture craft
CN109176845B (en) Ceramic colored drawing and overlAN _ SNping color process
CN103332968B (en) Full-polishing glaze production process and prepared product
CN104478494B (en) Under glaze, sprinkle the preparation method of color ceramic
CN103319158A (en) Method for preparing Nixing pottery through calcining
CN107759090B (en) Glaze material with effect of imitating black gold sand marble and application thereof
CN108164139A (en) Parian sheen brick overglaze, parian sheen brick and preparation method thereof
CN109279779A (en) A kind of preparation method of full space of a whole page dark color ceramic tile
CN108558446A (en) A kind of manufacturing method of the Ceramic Tiles with three-dimensional decorative effect
CN108017414A (en) Spot furnace transmutation glaze ceramics and preparation method thereof under the daily glaze of environmental protection
CN107056060B (en) The peacock blue glaze ceramics of gradual change and its preparation process
CN110713393B (en) Blended ceramic pigment glaze and production method thereof, stone-like glazed tile and production method thereof
CN202543089U (en) Glazed ceramic tile with stereoscopic and level impressions
CN110256113A (en) A kind of ceramic large area overglaze color anticracking color technique of white clouds soil
CN208685983U (en) A kind of flexible stone tapestry brick
CN103497006B (en) A kind of Polished crystal tile with ice crack shape and manufacture method thereof
CN102794950B (en) Once-fired color microcrystal brick and production process thereof
CN110040959A (en) A kind of blue and white porcelain and its manufacture craft with wood kiln effect modelled after an antique
CN102677843B (en) The face brick-imitation of energy-saving heat preserving, stone coating material and mould decorationsization construction method thereof
CN102926512B (en) Outer wall decoration technique
CN1765817A (en) Green glaze ink color ceramics production method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
CB02 Change of applicant information

Address after: 515548 Yinghua village, Xin Heng Town, Jie Dong District, Jieyang, Guangdong

Applicant after: Guangdong Yicheng Ceramic Industry Co.,Ltd.

Address before: 515548 Yinghua village, Xin Ting Town, Jie Dong District, Jieyang, Guangdong, China

Applicant before: Guangdong Yicheng Ceramic Industry Co.,Ltd.

RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20190920