BR112012027515A2 - métodos de formação de compactos policristalinos - Google Patents

métodos de formação de compactos policristalinos

Info

Publication number
BR112012027515A2
BR112012027515A2 BR112012027515A BR112012027515A BR112012027515A2 BR 112012027515 A2 BR112012027515 A2 BR 112012027515A2 BR 112012027515 A BR112012027515 A BR 112012027515A BR 112012027515 A BR112012027515 A BR 112012027515A BR 112012027515 A2 BR112012027515 A2 BR 112012027515A2
Authority
BR
Brazil
Prior art keywords
polycrystalline
methods
reactive
catalyst
formation methods
Prior art date
Application number
BR112012027515A
Other languages
English (en)
Inventor
Anthony A Digiovanni
Original Assignee
Baker Hughes Inc
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 Baker Hughes Inc filed Critical Baker Hughes Inc
Publication of BR112012027515A2 publication Critical patent/BR112012027515A2/pt

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/46Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56Button-type inserts
    • E21B10/567Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • E21B10/5676Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a cutting face with different segments, e.g. mosaic-type inserts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/14Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic ceramic, i.e. vitrified bondings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0009Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/06Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D99/00Subject matter not provided for in other groups of this subclass
    • B24D99/005Segments of abrasive wheels
    • 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
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/528Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
    • 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
    • C04B41/009After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B41/53After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete
    • C04B41/5338Etching
    • C04B41/5361Etching with molten material
    • 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
    • C04B41/91After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics involving the removal of part of the materials of the treated articles, e.g. etching
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C26/00Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00Drill bits
    • E21B10/46Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56Button-type inserts
    • E21B10/567Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • 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
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422Carbon
    • C04B2235/427Diamond

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Metallurgy (AREA)
  • Catalysts (AREA)
  • Earth Drilling (AREA)

Abstract

métodos de formação de compactos policristalinos. a presente invenção refere-se a métodos de formação de um compacto policristalino para uso em uma ferramenta de perfuração subterrânea que incluem sinterizar várias partículas duras com material catalisador para formar um material policristalino que inclui várias partículas interligadas de material duro integralmente formadas com o material catalisador e introduzir pelo menos uma porção do material policristalino em um material reativo para remover pelo menos uma porção do material catalisador contido no interior do material policristalino. o material reativo pode incluir pelo menos um de um vidro fundido, um composto iônico, um licor de lixiviação, e um plasma químico. o material reativo pode ser introduzido no material policristalino a uma temperatura maior ou igual a do ponto de fusão do mesmo.
BR112012027515A 2010-04-27 2011-04-27 métodos de formação de compactos policristalinos BR112012027515A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32843410P 2010-04-27 2010-04-27
PCT/US2011/034125 WO2011139760A2 (en) 2010-04-27 2011-04-27 Methods of forming polycrystalline compacts

Publications (1)

Publication Number Publication Date
BR112012027515A2 true BR112012027515A2 (pt) 2016-07-26

Family

ID=44814583

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112012027515A BR112012027515A2 (pt) 2010-04-27 2011-04-27 métodos de formação de compactos policristalinos

Country Status (9)

Country Link
US (2) US9034062B2 (pt)
EP (3) EP2564011B1 (pt)
CN (1) CN102918226B (pt)
BR (1) BR112012027515A2 (pt)
CA (1) CA2797618C (pt)
MX (1) MX2012012469A (pt)
RU (1) RU2012150403A (pt)
WO (1) WO2011139760A2 (pt)
ZA (1) ZA201208107B (pt)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10016876B2 (en) 2007-11-05 2018-07-10 Baker Hughes, A Ge Company, Llc Methods of forming polycrystalline compacts and earth-boring tools including polycrystalline compacts
CN102918226B (zh) * 2010-04-27 2016-05-11 贝克休斯公司 形成聚晶复合体的方法
EP2603661A4 (en) * 2010-08-13 2016-09-28 Baker Hughes Inc CUTTING ELEMENTS CONTAINING NANOPARTICLES IN AT LEAST ONE OF THEIR PARTIES, DRILLING COMPRISING SUCH CUTTING ELEMENTS AND ASSOCIATED METHODS
US9423436B2 (en) 2012-02-21 2016-08-23 Varel International Ind., L.P. Method and apparatus to assess the thermal damage caused to a PCD cutter using capacitance spectroscopy
US9377428B2 (en) 2012-02-21 2016-06-28 Varel International Ind., L.P. Non-destructive leaching depth measurement using capacitance spectroscopy
US9128031B2 (en) 2012-02-21 2015-09-08 Varel International Ind., L.P. Method to improve the leaching process
US9423370B2 (en) 2012-02-21 2016-08-23 Varel International Ind., L.P Use of capacitance to analyze polycrystalline diamond
US9249059B2 (en) * 2012-04-05 2016-02-02 Varel International Ind., L.P. High temperature high heating rate treatment of PDC cutters
AR096578A1 (es) * 2013-06-11 2016-01-20 Ulterra Drilling Tech Lp Elementos de pcd y proceso para elaborarlos
US10046441B2 (en) * 2013-12-30 2018-08-14 Smith International, Inc. PCD wafer without substrate for high pressure / high temperature sintering
GB201409701D0 (en) * 2014-05-31 2014-07-16 Element Six Abrasives Sa A method of making a thermally stable polycrystalline super hard construction
US9931714B2 (en) 2015-09-11 2018-04-03 Baker Hughes, A Ge Company, Llc Methods and systems for removing interstitial material from superabrasive materials of cutting elements using energy beams
CN108884707B (zh) * 2016-03-16 2021-08-24 戴蒙得创新股份有限公司 包含具有不同特性的环形区域的多晶金刚石体

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE670307A (pt) * 1964-12-14 1900-01-01
US3673154A (en) 1970-06-26 1972-06-27 Atlantic Richfield Co Process for the recovery of cobalt catalyst
US3745623A (en) 1971-12-27 1973-07-17 Gen Electric Diamond tools for machining
US4361472A (en) 1980-09-15 1982-11-30 Vac-Tec Systems, Inc. Sputtering method and apparatus utilizing improved ion source
DE3204510C2 (de) 1982-02-10 1986-10-02 Dynamit Nobel Ag, 5210 Troisdorf Verfahren zur Gewinnung von Kobalt und/oder Mangan als Oxalate
DE3234372A1 (de) 1982-09-16 1984-03-22 Sartorius GmbH, 3400 Göttingen Elektrische waage
US5127923A (en) 1985-01-10 1992-07-07 U.S. Synthetic Corporation Composite abrasive compact having high thermal stability
GB2216929B (en) 1988-04-05 1992-11-04 Reed Tool Co Improvements in or relating to cutting elements for rotary drill bits
GB9319971D0 (en) 1993-09-28 1993-11-17 Cookson Group Plc Cobalt glass compositions for coatings
CN1102220A (zh) * 1993-10-28 1995-05-03 北京科技大学 一种在硬质合金工具刃口涂复金刚石膜的方法
US5731045A (en) * 1996-01-26 1998-03-24 Southwest Research Institute Application of diamond-like carbon coatings to cobalt-cemented tungsten carbide components
US5665252A (en) * 1995-07-12 1997-09-09 Lucent Technologies Inc. Method of shaping a polycrystalline diamond body
US5863493A (en) * 1996-12-16 1999-01-26 Ford Motor Company Lead-free solder compositions
US5954147A (en) 1997-07-09 1999-09-21 Baker Hughes Incorporated Earth boring bits with nanocrystalline diamond enhanced elements
US6340730B1 (en) 1999-12-06 2002-01-22 Univation Technologies, Llc Multiple catalyst system
DE60140617D1 (de) 2000-09-20 2010-01-07 Camco Int Uk Ltd Polykristalliner diamant mit einer an katalysatormaterial abgereicherten oberfläche
US6592985B2 (en) 2000-09-20 2003-07-15 Camco International (Uk) Limited Polycrystalline diamond partially depleted of catalyzing material
US8110489B2 (en) 2001-07-25 2012-02-07 Applied Materials, Inc. Process for forming cobalt-containing materials
US20030078451A1 (en) * 2001-10-24 2003-04-24 Mechema Chemicals International Corp. Catalytic solution system for manufacturing terephthalic acid and a method for same
US6772849B2 (en) 2001-10-25 2004-08-10 Smith International, Inc. Protective overlay coating for PDC drill bits
CN100357488C (zh) * 2002-07-18 2007-12-26 中国科学院长沙大地构造研究所 一种金刚石镀膜刀具的制造方法
US20060157276A1 (en) 2003-08-08 2006-07-20 Jim Carothers Pipe burster with spherical bursting member
US7754333B2 (en) * 2004-09-21 2010-07-13 Smith International, Inc. Thermally stable diamond polycrystalline diamond constructions
US7493973B2 (en) * 2005-05-26 2009-02-24 Smith International, Inc. Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance
US7597159B2 (en) 2005-09-09 2009-10-06 Baker Hughes Incorporated Drill bits and drilling tools including abrasive wear-resistant materials
US7726421B2 (en) * 2005-10-12 2010-06-01 Smith International, Inc. Diamond-bonded bodies and compacts with improved thermal stability and mechanical strength
US20070169419A1 (en) 2006-01-26 2007-07-26 Ulterra Drilling Technologies, Inc. Sonochemical leaching of polycrystalline diamond
US7703559B2 (en) 2006-05-30 2010-04-27 Smith International, Inc. Rolling cutter
US8215420B2 (en) * 2006-08-11 2012-07-10 Schlumberger Technology Corporation Thermally stable pointed diamond with increased impact resistance
US8080074B2 (en) * 2006-11-20 2011-12-20 Us Synthetic Corporation Polycrystalline diamond compacts, and related methods and applications
US7980334B2 (en) 2007-10-04 2011-07-19 Smith International, Inc. Diamond-bonded constructions with improved thermal and mechanical properties
KR100949250B1 (ko) * 2007-10-10 2010-03-25 제일모직주식회사 금속 cmp 슬러리 조성물 및 이를 이용한 연마 방법
US8083012B2 (en) * 2008-10-03 2011-12-27 Smith International, Inc. Diamond bonded construction with thermally stable region
US8663349B2 (en) 2008-10-30 2014-03-04 Us Synthetic Corporation Polycrystalline diamond compacts, and related methods and applications
US20110036643A1 (en) 2009-08-07 2011-02-17 Belnap J Daniel Thermally stable polycrystalline diamond constructions
CN102918226B (zh) * 2010-04-27 2016-05-11 贝克休斯公司 形成聚晶复合体的方法

Also Published As

Publication number Publication date
WO2011139760A2 (en) 2011-11-10
EP3399136A1 (en) 2018-11-07
US9500039B2 (en) 2016-11-22
EP2564011B1 (en) 2019-01-23
EP3399135A1 (en) 2018-11-07
EP2564011A2 (en) 2013-03-06
EP2564011A4 (en) 2016-09-21
CA2797618C (en) 2016-04-12
WO2011139760A3 (en) 2011-12-22
CA2797618A1 (en) 2011-11-10
US20110258936A1 (en) 2011-10-27
US20150226011A1 (en) 2015-08-13
CN102918226B (zh) 2016-05-11
RU2012150403A (ru) 2014-06-10
ZA201208107B (en) 2014-03-26
CN102918226A (zh) 2013-02-06
EP3399136B1 (en) 2020-09-02
US9034062B2 (en) 2015-05-19
MX2012012469A (es) 2012-11-21

Similar Documents

Publication Publication Date Title
BR112012027515A2 (pt) métodos de formação de compactos policristalinos
AU2017248555B2 (en) Closed nucleic acid structures
MY145160A (en) A composition and method for making a proppant
EA201290543A1 (ru) Расклинивающий агент, содержащий стеклокерамический материал
GB201000554D0 (en) Stabilized lithium metal powder for lithium-ion applications, composition and production process
BR112015028855A2 (pt) Processo para a fabricação de pó que contem metal
ES2670983T3 (es) Métodos y composiciones relacionados con CRISPR con ARNg rectores
EA201491512A1 (ru) Способ эксплуатации скважины
HK1129045A1 (en) Chemically modified oligonucleotide primers for nucleic acid amplification
MX2012007608A (es) Particulas de ceramica con colocacion y/o tamaño de poro y/o microesfera controlados y metodo para hacerlas.
TW200801262A (en) Method for purifying silicon
WO2012061187A3 (en) Volcanic ash-based drilling mud to overcome drilling challenges
WO2014100141A3 (en) Downhole downhole tools having non-toxic degradable elements
MX2016004696A (es) Composicion acidificante de acido fluorhidrico compatible con grados metalurgicos sensibles.
ZA200706266B (en) Method for the production of wine and wine obtained from such method
BR112018075593A2 (pt) método para fabricar briquetes contendo composto de cálcio-magnésio e composto à base de ferro e briquetes desse modo obtidos
MX2014013441A (es) Metodos para proteger una zona productora de hidrocarburos de una formacion subterranea utilizando un modificador de permeabilidad relativa.
MX336600B (es) Composiciones y metodos para impedir el deposito de asfaltenos.
MX2009004983A (es) Pirazoles sustituidos, composiciones que los contienen, procedimiento de fabricacion y utilizacion.
BR112018013927A2 (pt) método para descontaminar sulfeto de hidrogênio e impedir formação de hidratos em um meio, composição multifuncional, e, uso de uma composição multifunctional
WO2006110358A3 (en) Methods and compositions for introducing biopolymers into cells
BR112015026337A2 (pt) método de estocagem de co2
BR112012003574A8 (pt) Método para inibir formação de incrustação dentro de um sistema de produção de hidrocarboneto, usos de um organossilano em combinação com um mineral de argila e opcionalmente um carbonato de metal, e de um mineral de argila e opcionalmente um carbonato de metal e/ou um organossilano, composição de tratamento de poço de hidrocarboneto, e, kit para inibir a formação de incrustação dentro de um sistema de produção de hidrocarboneto
MX2016004347A (es) Composicion de haloalcano para inhibir o disolver depositos de asfaltenos o parafinas.
WO2015001016A3 (de) Verfahren zur förderung von erdöl aus einer unterirdischen erdöllagerstätte unter verwendung einer zusammensetzung, die ein borat sowie glyzerin enthält, zusammensetzung und verwendungen

Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]
B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]
B350 Update of information on the portal [chapter 15.35 patent gazette]