EP3826975A2 - A novel method of producing synthetic lightweight ceramic sand and uses thereof - Google Patents
A novel method of producing synthetic lightweight ceramic sand and uses thereofInfo
- Publication number
- EP3826975A2 EP3826975A2 EP19870049.4A EP19870049A EP3826975A2 EP 3826975 A2 EP3826975 A2 EP 3826975A2 EP 19870049 A EP19870049 A EP 19870049A EP 3826975 A2 EP3826975 A2 EP 3826975A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sand
- lightweight
- fly ash
- lightweight ceramic
- moist
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/023—Fired or melted materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/04—Heat treatment
- C04B20/06—Expanding clay, perlite, vermiculite or like granular materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
- C04B33/1322—Red mud
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62645—Thermal treatment of powders or mixtures thereof other than sintering
- C04B35/62655—Drying, e.g. freeze-drying, spray-drying, microwave or supercritical drying
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/62695—Granulation or pelletising
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Definitions
- the present invention relates to a method of fabricating lightweight ceramic sand.
- the present invention particularly relates to a novel method of manufacturing sintered synthetic lightweight ceramic sand particulates directly from moist bauxite residue cake and fly ash as a secondary raw material.
- the said synthetic lightweight ceramic sand can be used as a building material.
- the said synthetic sand can also be used as a lightweight sand in hydraulic fracking for shale gas recovery.
- the novel feature of the invention is to manufacture low cost lightweight sand at high throughput to compete against the fast depleting natural sand and frat sand.
- the present invention relates to fabrication of fine particulates at high throughput and at very low manufacturing cost to compete against the fast depleting natural sand including crushed stones and lightweight fine aggregates produced from expanded clay, expanded glass and volcanic activities.
- the aforementioned method comprises a drying step wherein said drying is fluidized bed drying between 150-300°C.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Dispersion Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Civil Engineering (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201862714677P | 2018-08-04 | 2018-08-04 | |
PCT/IB2019/001249 WO2020109861A2 (en) | 2018-08-04 | 2019-08-04 | A novel method of producing synthetic lightweight ceramic sand and uses thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3826975A2 true EP3826975A2 (en) | 2021-06-02 |
Family
ID=70110273
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19870049.4A Pending EP3826975A2 (en) | 2018-08-04 | 2019-08-04 | A novel method of producing synthetic lightweight ceramic sand and uses thereof |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3826975A2 (en) |
CN (1) | CN112805260B (en) |
AU (1) | AU2019389856B2 (en) |
BR (1) | BR112021001936A2 (en) |
CA (1) | CA3108034A1 (en) |
RU (1) | RU2765095C1 (en) |
WO (1) | WO2020109861A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115159957B (en) * | 2021-04-01 | 2023-09-01 | 国家能源投资集团有限责任公司 | Composition for producing coal-based solid waste porous ceramic, preparation method and application thereof |
CN115819020A (en) * | 2022-11-25 | 2023-03-21 | 宁波新胜中压电器有限公司 | Light high-strength concrete for prefabricating power grid and preparation process thereof |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1671229A1 (en) * | 1951-01-28 | 1971-09-02 | Vaw Ver Aluminium Werke Ag | Process for the production of porous ceramic materials from the bauxite residues occurring in the aluminum industry |
SU1348310A1 (en) * | 1986-01-28 | 1987-10-30 | Уральский политехнический институт им.С.М.Кирова | Raw mixture for producing keramzit |
SU1726422A1 (en) * | 1989-11-09 | 1992-04-15 | Павлодарский Индустриальный Институт | Method of producing light filler |
CN101085914B (en) | 2007-07-17 | 2011-05-11 | 桂林工学院 | Method for preparing acid-resistant pressing crack supporting agent from red mud |
CN101575503B (en) | 2009-06-11 | 2011-08-31 | 邹平金刚新材料有限公司 | High-strength fracturing propping agent for petroleum and preparation method thereof |
CN102336579B (en) * | 2010-07-26 | 2013-12-25 | 贵州省建筑材料科学研究设计院 | Method for producing high-performance haydite from red mud |
US8772207B2 (en) * | 2012-06-26 | 2014-07-08 | Brownwood Clay Holdings, Llc | Spherical pellets containing common clay particulate material useful as a proppant in hydraulic fracturing of oil and gas wells |
PL406381A1 (en) * | 2013-12-05 | 2015-06-08 | Baltic Ceramics Spółka Akcyjna | Method for producing light ceramic proppants and the light ceramic proppants |
RU139139U1 (en) * | 2013-05-20 | 2014-04-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ) | PSEUMATIC LAYER DRYER |
CN103304253B (en) | 2013-06-27 | 2015-04-22 | 山东建筑大学 | Porous ceramic prepared from red mud and coal ash and preparation method thereof |
CN103396784A (en) | 2013-08-15 | 2013-11-20 | 贵州林海陶粒制造有限公司 | Low-density and high-strength petroleum fracturing proppant prepared from red mud and preparation method thereof |
RU2542177C1 (en) * | 2013-10-24 | 2015-02-20 | Федеральное государственное бюджетное учреждение "Национальный исследовательский центр "Курчатовский институт" | Method of red mud processing |
CN105294142B (en) | 2015-10-23 | 2017-10-03 | 河南城建学院 | A kind of red mud base sintering light-weight aggregate and preparation method thereof |
CN106497542A (en) * | 2016-08-19 | 2017-03-15 | 北京众博达石油科技有限公司 | Well fracturing proppant that a kind of flyash is fired into and preparation method thereof |
CN106587931B (en) * | 2016-12-16 | 2018-08-24 | 广东清大同科环保技术有限公司 | A kind of light high-strength haydite and preparation method thereof |
CN107963902A (en) * | 2017-12-04 | 2018-04-27 | 昆明理工大学 | A kind of preparation method of high-hydroscopicity haydite |
-
2019
- 2019-08-04 BR BR112021001936A patent/BR112021001936A2/en unknown
- 2019-08-04 WO PCT/IB2019/001249 patent/WO2020109861A2/en active Application Filing
- 2019-08-04 EP EP19870049.4A patent/EP3826975A2/en active Pending
- 2019-08-04 AU AU2019389856A patent/AU2019389856B2/en not_active Expired - Fee Related
- 2019-08-04 RU RU2021105369A patent/RU2765095C1/en active
- 2019-08-04 CA CA3108034A patent/CA3108034A1/en active Pending
- 2019-08-04 CN CN201980051714.6A patent/CN112805260B/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2020109861A2 (en) | 2020-06-04 |
AU2019389856A1 (en) | 2021-03-25 |
CA3108034A1 (en) | 2020-06-04 |
RU2765095C1 (en) | 2022-01-25 |
AU2019389856B2 (en) | 2023-07-13 |
WO2020109861A3 (en) | 2020-08-13 |
CN112805260A (en) | 2021-05-14 |
BR112021001936A2 (en) | 2022-02-01 |
CN112805260B (en) | 2023-01-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101948286B (en) | Aerated concrete building block produced by using ceramic waste and manufacturing method thereof | |
CN106396634B (en) | The preparation method of light, and high-strength fly-ash haydite | |
CN101186485A (en) | Sewage sludge shale ceramic particle and preparation method thereof | |
CN102826827A (en) | Sintering pitchers brick with ceramics polishing slag serving as main material and production method of sintering pitchers brick | |
CN110862252B (en) | River and lake sludge-based non-fired ultra-light ceramsite as well as preparation method and application thereof | |
CN103332877B (en) | Method for preparing inorganic cementing material by using dredged silt | |
WO2018049264A1 (en) | Cement formulations and methods | |
CN102390964A (en) | Steam-pressed environment-friendly brick produced by using coal gangue residues and manufacturing method thereof | |
AU2019389856B2 (en) | A novel method of producing synthetic lightweight ceramic sand and uses thereof | |
CN100357226C (en) | Method for preparing sandwich type ceramic aggregates free from burning by using waste of ceramics | |
CN101817667A (en) | Light non-fired hollow building blocks produced from ceramic waste residue and manufacturing method thereof | |
CN103319150B (en) | High-doping ratio red mud sintered brick and preparation method thereof | |
CN110041051A (en) | A kind of river bottom mud and construction slurry haydite and preparation method thereof | |
CN107721456A (en) | A kind of anti-corrosion iron ore tailings haydite and preparation method | |
CN108911726A (en) | A kind of gangue-permeable Ceramic Tiles of desulfurized gypsum-calcium carbonate system and preparation method thereof | |
US20210363057A1 (en) | Novel method of producing improved lightweight ceramic sand and uses thereof | |
EP3805177A1 (en) | A method of producing lightweight ceramic sand from lignite fly ash, composition and use thereof | |
CN111574197B (en) | Method for preparing light ceramic sand particles from coal kiln ash and application thereof | |
KR20000072111A (en) | Composition for lightweight aggregate and method for manufacturing the same | |
CN110105053A (en) | A kind of preparation method of flyash sintering blue bricks | |
TWI596076B (en) | Artificial lightweight aggregate used for construction and building material and manufacturing method thereof | |
CN107879726A (en) | A kind of preparation method of coal ash sintering brick | |
KR20020044899A (en) | Composition for lightweight aggregate and method for manufacturing the same | |
KR100392933B1 (en) | Composition for lightweight aggregate | |
AU2021212051A1 (en) | A novel method of producing improved lightweight ceramic sand and uses thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20210226 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAV | Request for validation of the european patent (deleted) | ||
RAX | Requested extension states of the european patent have changed |
Extension state: BA Payment date: 20210226 |