GB2453497A - Binder removal from particulate bodies - Google Patents

Binder removal from particulate bodies Download PDF

Info

Publication number
GB2453497A
GB2453497A GB0901864A GB0901864A GB2453497A GB 2453497 A GB2453497 A GB 2453497A GB 0901864 A GB0901864 A GB 0901864A GB 0901864 A GB0901864 A GB 0901864A GB 2453497 A GB2453497 A GB 2453497A
Authority
GB
United Kingdom
Prior art keywords
water soluble
soluble polymeric
polymeric binder
particulate material
binder removal
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.)
Granted
Application number
GB0901864A
Other versions
GB2453497B (en
GB0901864D0 (en
Inventor
Martin Biler
Ivana Zednickova
Tomas Karnik
Zdenek Sita
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.)
AVX Ltd
Original Assignee
AVX 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 AVX Ltd filed Critical AVX Ltd
Publication of GB0901864D0 publication Critical patent/GB0901864D0/en
Publication of GB2453497A publication Critical patent/GB2453497A/en
Application granted granted Critical
Publication of GB2453497B publication Critical patent/GB2453497B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/495—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • 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
    • C04B35/63—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 using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • 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
    • C04B35/63—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 using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63416—Polyvinylalcohols [PVA]; Polyvinylacetates
    • 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
    • C04B35/63—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 using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B35/63444—Nitrogen-containing polymers, e.g. polyacrylamides, polyacrylonitriles, polyvinylpyrrolidone [PVP], polyethylenimine [PEI]
    • 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
    • C04B35/63—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 using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/634—Polymers
    • C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • C04B35/63—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 using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/638—Removal thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3251—Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts 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
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/72—Products characterised by the absence or the low content of specific components, e.g. alkali metal free alumina ceramics
    • C04B2235/721—Carbon content

Abstract

The present invention relates to a method of manufacturing a porous article, in particular the anode of a valve action material based solid state capacitor, comprising the steps of combining a water soluble polymeric binder and particulate material before pressing the particulate material and the subsequent step of removing the binder form the pressed pellet. Thus, the present invention also relates to a method of removing a water soluble polymeric binder from pressed particulate material and to a composition comprising a water soluble polymeric binder for forming the anode of a valve action material based solid state capacitor.
GB0901864A 2006-07-06 2007-06-29 Binder removal from particulate bodies Expired - Fee Related GB2453497B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0613491.0A GB0613491D0 (en) 2006-07-06 2006-07-06 Binder removal particulate bodies
PCT/GB2007/002440 WO2008003938A1 (en) 2006-07-06 2007-06-29 Binder removal from particulate bodies

Publications (3)

Publication Number Publication Date
GB0901864D0 GB0901864D0 (en) 2009-03-11
GB2453497A true GB2453497A (en) 2009-04-08
GB2453497B GB2453497B (en) 2011-11-16

Family

ID=36926611

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0613491.0A Ceased GB0613491D0 (en) 2006-07-06 2006-07-06 Binder removal particulate bodies
GB0901864A Expired - Fee Related GB2453497B (en) 2006-07-06 2007-06-29 Binder removal from particulate bodies

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0613491.0A Ceased GB0613491D0 (en) 2006-07-06 2006-07-06 Binder removal particulate bodies

Country Status (7)

Country Link
US (1) US20100025876A1 (en)
JP (1) JP2009542563A (en)
KR (1) KR20090032070A (en)
CN (1) CN101460426A (en)
DE (1) DE112007001477T5 (en)
GB (2) GB0613491D0 (en)
WO (1) WO2008003938A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008063853B4 (en) * 2008-12-19 2012-08-30 H.C. Starck Gmbh capacitor anode
US8824122B2 (en) 2010-11-01 2014-09-02 Avx Corporation Solid electrolytic capacitor for use in high voltage and high temperature applications
DE102013101443A1 (en) 2012-03-01 2013-09-05 Avx Corporation Ultrahigh voltage solid electrolytic capacitor
JP5933397B2 (en) 2012-08-30 2016-06-08 エイヴィーエックス コーポレイション Solid electrolytic capacitor manufacturing method and solid electrolytic capacitor
CN102842432B (en) * 2012-08-31 2016-07-06 深圳顺络电子股份有限公司 The manufacture method of the anode bodies of electrochemical capacitor
US9324503B2 (en) 2013-03-15 2016-04-26 Avx Corporation Solid electrolytic capacitor
US9824826B2 (en) 2013-05-13 2017-11-21 Avx Corporation Solid electrolytic capacitor containing conductive polymer particles
GB2514486B (en) 2013-05-13 2018-08-29 Avx Corp Solid electrolytic capacitor containing a pre-coat layer
GB2516529B (en) 2013-05-13 2018-08-29 Avx Corp Solid electrolytic capacitor containing a multi-layered adhesion coating
US10431389B2 (en) 2016-11-14 2019-10-01 Avx Corporation Solid electrolytic capacitor for high voltage environments
DE102017207210A1 (en) 2017-04-28 2018-10-31 Skz-Kfe Ggmbh Process for the additive production of a component as well as additive manufactured component
US11081288B1 (en) 2018-08-10 2021-08-03 Avx Corporation Solid electrolytic capacitor having a reduced anomalous charging characteristic
US11380492B1 (en) 2018-12-11 2022-07-05 KYOCERA AVX Components Corporation Solid electrolytic capacitor
US11756742B1 (en) 2019-12-10 2023-09-12 KYOCERA AVX Components Corporation Tantalum capacitor with improved leakage current stability at high temperatures
US11763998B1 (en) 2020-06-03 2023-09-19 KYOCERA AVX Components Corporation Solid electrolytic capacitor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6008281A (en) * 1998-01-13 1999-12-28 Planet Polymer Technologies, Inc. Powder and binder systems for use in metal and ceramic powder injection molding
WO2001019555A1 (en) * 1999-09-16 2001-03-22 Kemet Electronics Corporation Process for producing powder metallurgy compacts free from binder contamination and compacts produced thereby
WO2002037513A2 (en) * 2000-11-06 2002-05-10 Cabot Corporation Modified oxygen reduced valve metal oxides

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302073A (en) * 1963-10-21 1967-01-31 Gen Electric Electrical capacitors and electrode material therefor
US5006493A (en) * 1986-03-31 1991-04-09 The Dow Chemical Company Novel ceramic binder comprising poly(ethyloxazoline)
US4664883A (en) * 1986-06-17 1987-05-12 Emhart Industries, Inc. Method of making electrolytic capacitor anodes
JPS6335457A (en) * 1986-07-29 1988-02-16 イビデン株式会社 Tio2 sintered body and manufacture
JP3092860B2 (en) 1991-04-18 2000-09-25 三井金属鉱業株式会社 Injection molding method for zirconia ceramics
JP2914820B2 (en) 1992-05-28 1999-07-05 富士通株式会社 Raw materials for injection molding
US5470525A (en) 1994-07-01 1995-11-28 H. C. Starck, Inc. Removal of binder from Ta products
US6023408A (en) * 1996-04-09 2000-02-08 The Board Of Trustees Of The University Of Arkansas Floating plate capacitor with extremely wide band low impedance
GB9700566D0 (en) 1997-01-13 1997-03-05 Avx Ltd Binder removal
SG86995A1 (en) 1997-12-15 2002-03-19 Ceramet Composition And Proces Mouldable composition and process
GB9824442D0 (en) * 1998-11-06 1999-01-06 Avx Ltd Manufacture of solid state capacitors
NL1011310C2 (en) 1999-02-16 2000-08-18 Corus Technology B V Binder system for a PIM process.
DE10030387A1 (en) * 2000-06-21 2002-01-03 Starck H C Gmbh Co Kg capacitor powder
US20030076695A1 (en) * 2001-08-21 2003-04-24 Grant David Alexander Area efficient method of detecting when a switch-mode power supply is within regulation
US20030084360A1 (en) * 2001-08-21 2003-05-01 Grant David Alexander Method of synchronizing and phase staggering two or more sampled data systems
US6757152B2 (en) * 2001-09-05 2004-06-29 Avx Corporation Cascade capacitor
US6870727B2 (en) * 2002-10-07 2005-03-22 Avx Corporation Electrolytic capacitor with improved volumetric efficiency
JP4430440B2 (en) * 2004-03-23 2010-03-10 ニチコン株式会社 Manufacturing method of anode body for solid electrolytic capacitor
US8717777B2 (en) * 2005-11-17 2014-05-06 Avx Corporation Electrolytic capacitor with a thin film fuse
US8257463B2 (en) * 2006-01-23 2012-09-04 Avx Corporation Capacitor anode formed from flake powder
US7468882B2 (en) * 2006-04-28 2008-12-23 Avx Corporation Solid electrolytic capacitor assembly
US7532457B2 (en) * 2007-01-15 2009-05-12 Avx Corporation Fused electrolytic capacitor assembly
US7483259B2 (en) * 2007-03-21 2009-01-27 Avx Corporation Solid electrolytic capacitor containing a barrier layer
US7515396B2 (en) * 2007-03-21 2009-04-07 Avx Corporation Solid electrolytic capacitor containing a conductive polymer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6008281A (en) * 1998-01-13 1999-12-28 Planet Polymer Technologies, Inc. Powder and binder systems for use in metal and ceramic powder injection molding
WO2001019555A1 (en) * 1999-09-16 2001-03-22 Kemet Electronics Corporation Process for producing powder metallurgy compacts free from binder contamination and compacts produced thereby
WO2002037513A2 (en) * 2000-11-06 2002-05-10 Cabot Corporation Modified oxygen reduced valve metal oxides

Also Published As

Publication number Publication date
CN101460426A (en) 2009-06-17
DE112007001477T5 (en) 2009-06-04
GB2453497B (en) 2011-11-16
US20100025876A1 (en) 2010-02-04
JP2009542563A (en) 2009-12-03
WO2008003938A1 (en) 2008-01-10
GB0613491D0 (en) 2006-08-16
KR20090032070A (en) 2009-03-31
GB0901864D0 (en) 2009-03-11

Similar Documents

Publication Publication Date Title
GB2453497A (en) Binder removal from particulate bodies
WO2009059165A3 (en) Endoprosthesis coating
WO2006097503A3 (en) Process for the preparation of porous sintered metal materials
WO2010044577A3 (en) Method for manufacturing a porous three-dimensional support using powder from animal tissue, and porous three-dimensional support manufactured by same
WO2008098922A3 (en) Biodegradable porous stent
MX2009013053A (en) Prilled waxes comprising small particles and smooth-sided compression candles made therefrom.
WO2008039839A8 (en) Lattice dressing
WO2007016545A3 (en) Porous materials having multi-size geometries
WO2007117943A3 (en) Systems and methods of making molded composite blocks
ATE506331T1 (en) BLOCKS OF WOOD AGGLOMERATE
WO2012143365A3 (en) Process for manufacturing an object by solidifying a powder using a laser
EP1721875A3 (en) Use of a salt of a poly-acid to delay setting in cement slurry
EP1857520A4 (en) Composition for heat-storage object formation, heat-storage object, and process for producing heat-storage object
SG169281A1 (en) A method of joining components
PT1719742E (en) Hydraulic binder
WO2008057382A3 (en) Nanopore reactive adsorbents for the high-efficiency removal of waste species
AU2008357012A8 (en) Composition for precious metal sintering, process for producing precious metal sinter and precious metal sinter
WO2007122489A3 (en) Method of making a cbn compact
HK1121987A1 (en) Highly porous coated fine particles, composition, and method of production
EP2228405A4 (en) Process for production of ethylene-vinyl alcohol copolymer composition, and process for production of ethylene-vinyl alcohol copolymer pellet
GB201019586D0 (en) Composite materials with improved properties
EP1808243A4 (en) Process for producing porous sinter, porous-sinter molding material, and porous sinter
HRP20191992T1 (en) Method for producing a bonded article comprising a press-moulded, carbonated granular material
CL2009000950A1 (en) Procedure for the elaboration of a material derived from wood that includes the steps of putting pieces of wood in contact with alkaline binder and thiacloprid, and pressing a load of pieces of wood containing treated pieces of wood, under pressure and at a temperature of 126 -240 ° C; and method of protecting a wood-derived material.
MXPA04006071A (en) Process for production of detergent tablets.

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20140629