DE68917947D1 - Keramisches Implantat und Verfahren zu dessen Herstellung. - Google Patents

Keramisches Implantat und Verfahren zu dessen Herstellung.

Info

Publication number
DE68917947D1
DE68917947D1 DE68917947T DE68917947T DE68917947D1 DE 68917947 D1 DE68917947 D1 DE 68917947D1 DE 68917947 T DE68917947 T DE 68917947T DE 68917947 T DE68917947 T DE 68917947T DE 68917947 D1 DE68917947 D1 DE 68917947D1
Authority
DE
Germany
Prior art keywords
manufacture
ceramic implant
implant
ceramic
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.)
Expired - Fee Related
Application number
DE68917947T
Other languages
English (en)
Other versions
DE68917947T2 (de
Inventor
Naoto Kijima
Yasuo Oguri
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
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
Priority claimed from JP63027027A external-priority patent/JPH01203265A/ja
Priority claimed from JP63027029A external-priority patent/JPH01203284A/ja
Priority claimed from JP63027031A external-priority patent/JPH01203285A/ja
Application filed by Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Application granted granted Critical
Publication of DE68917947D1 publication Critical patent/DE68917947D1/de
Publication of DE68917947T2 publication Critical patent/DE68917947T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/28—Bones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/02—Inorganic materials
    • A61L27/10—Ceramics or glasses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/28—Materials for coating prostheses
    • A61L27/30—Inorganic materials
    • A61L27/32—Phosphorus-containing materials, e.g. apatite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B18/00—Layered products essentially comprising ceramics, e.g. refractory products
    • 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
    • C04B35/48—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 zirconium or hafnium oxides, zirconates, zircon or hafnates
    • C04B35/486—Fine ceramics
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
    • C04B41/5092—Phosphate cements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
    • A61C8/0013—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy with a surface layer, coating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00389—The prosthesis being coated or covered with a particular material
    • A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
    • A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00836—Uses not provided for elsewhere in C04B2111/00 for medical or dental applications
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/34—Oxidic
    • C04B2237/345—Refractory metal oxides
    • C04B2237/348—Zirconia, hafnia, zirconates or hafnates
DE68917947T 1988-02-08 1989-02-07 Keramisches Implantat und Verfahren zu dessen Herstellung. Expired - Fee Related DE68917947T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP63027027A JPH01203265A (ja) 1988-02-08 1988-02-08 ジルコニア焼結体及びその製造方法
JP63027029A JPH01203284A (ja) 1988-02-08 1988-02-08 セラミックス製インプラント及びその製造方法
JP63027031A JPH01203285A (ja) 1988-02-08 1988-02-08 セラミックス製インプラント及びその製造方法

Publications (2)

Publication Number Publication Date
DE68917947D1 true DE68917947D1 (de) 1994-10-13
DE68917947T2 DE68917947T2 (de) 1995-03-16

Family

ID=27285630

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68917947T Expired - Fee Related DE68917947T2 (de) 1988-02-08 1989-02-07 Keramisches Implantat und Verfahren zu dessen Herstellung.

Country Status (3)

Country Link
US (1) US4983182A (de)
EP (1) EP0328041B1 (de)
DE (1) DE68917947T2 (de)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5185177A (en) * 1988-02-08 1993-02-09 Mitsubishi Kasei Corporation Producing a ceramic implant by coating a powder mixture of zirconia and either tricalcium phosphate or hydroxyapatite on a molded unsintered body of partially stabilized zirconia and then sintering the article
US5192325A (en) * 1988-02-08 1993-03-09 Mitsubishi Kasei Corporation Ceramic implant
US4990163A (en) * 1989-02-06 1991-02-05 Trustees Of The University Of Pennsylvania Method of depositing calcium phosphate cermamics for bone tissue calcification enhancement
JP2830262B2 (ja) * 1990-01-08 1998-12-02 住友化学工業株式会社 ハイドロキシアパタイト皮膜の形成方法
JPH0653631B2 (ja) * 1990-02-09 1994-07-20 工業技術院長 リン酸カルシウム化合物のコーテイング複合材料及びその製造法
CH688894A5 (de) * 1993-05-07 1998-05-15 Metoxit Ag Verwendung Yttrium stabilisierten Zirkonoxids zur Herstellung von Halbzeugen fuer Prothesen durch Dichtsinterung
US5679294A (en) * 1994-03-02 1997-10-21 Kabushiki Kaisya Advance α-tricalcium phosphate ceramic and production method thereof
DE19504955A1 (de) * 1995-02-15 1996-08-22 Merck Patent Gmbh Verfahren zur Herstellung von Spongiosa-Knochenkeramikformkörpern
JPH0956805A (ja) * 1995-08-24 1997-03-04 Millennium Biologics Inc リン酸カルシウム材の薄膜製造のための改良焼結方法
US5783248A (en) * 1995-08-28 1998-07-21 National Science Council Of R.O.C. Process for producing a bioceramic composite material containing natural bone material on an alumina substrate
US6846493B2 (en) * 1995-09-01 2005-01-25 Millenium Biologix Inc. Synthetic biomaterial compound of calcium phosphate phases particularly adapted for supporting bone cell activity
NZ315995A (en) 1995-09-01 1999-09-29 Millenium Biologix Inc Artificial sintered composition comprising stabilised calcium phosphate phases capable of supporting bone cell activity
FR2759283B1 (fr) * 1997-02-10 1999-07-02 Jacques Vidalens Procede de realisation d'un implant de prothese dentaire et implant ainsi obtenu
US6977095B1 (en) * 1997-10-01 2005-12-20 Wright Medical Technology Inc. Process for producing rigid reticulated articles
US6296667B1 (en) 1997-10-01 2001-10-02 Phillips-Origen Ceramic Technology, Llc Bone substitutes
US6136029A (en) * 1997-10-01 2000-10-24 Phillips-Origen Ceramic Technology, Llc Bone substitute materials
US6413660B1 (en) 1998-06-12 2002-07-02 Jeneric/Pentron, Inc. High-strength dental restorations
US20050127544A1 (en) * 1998-06-12 2005-06-16 Dmitri Brodkin High-strength dental restorations
US6533969B1 (en) * 1998-06-12 2003-03-18 Jeneric/Pentron, Inc. Method of making high-strength dental restorations
US6280193B1 (en) * 1998-09-30 2001-08-28 Jeanine Gourlaouen-Preissler Zirconium oxide dental implant with internal thread
JP3461818B2 (ja) * 1999-11-02 2003-10-27 松下電工株式会社 硬組織修復材及びその製造方法
US6379385B1 (en) 2000-01-06 2002-04-30 Tutogen Medical Gmbh Implant of bone matter
DE10015614B4 (de) * 2000-03-29 2009-02-19 Ceramtec Ag Gesinterter Formkörper mit poröser Schicht auf der Oberfläche sowie Verfahren zu seiner Herstellung und seine Verwendungen
US20020169066A1 (en) * 2001-04-16 2002-11-14 Cerabio, L.L.C. Dense porous structures for use as bone substitutes
SE525787C2 (sv) * 2003-09-24 2005-04-26 Nobel Biocare Ab Förfarande och anordning vid dental installation
US8814567B2 (en) 2005-05-26 2014-08-26 Zimmer Dental, Inc. Dental implant prosthetic device with improved osseointegration and esthetic features
JP5438967B2 (ja) 2005-08-30 2014-03-12 ジマー デンタル， インコーポレイテッド 改良されたオッセオインテグレーションの特徴を有する歯科用インプラント
US8562346B2 (en) 2005-08-30 2013-10-22 Zimmer Dental, Inc. Dental implant for a jaw with reduced bone volume and improved osseointegration features
DE102006024489A1 (de) * 2006-05-26 2007-11-29 Forschungszentrum Karlsruhe Gmbh Grünkörper, Verfahren zur Herstellung einer Keramik und deren Verwendung
US9149345B2 (en) * 2007-08-30 2015-10-06 Zimmer Dental, Inc. Multiple root implant
US20090115084A1 (en) * 2007-11-05 2009-05-07 James R. Glidewell Dental Ceramics, Inc. Slip-casting method of fabricating zirconia blanks for milling into dental appliances
JP5207480B2 (ja) * 2008-05-30 2013-06-12 株式会社ナントー精密 インプラント体及びその製造方法並びに歯科用インプラント
US8899982B2 (en) 2008-07-02 2014-12-02 Zimmer Dental, Inc. Implant with structure for securing a porous portion
US8562348B2 (en) 2008-07-02 2013-10-22 Zimmer Dental, Inc. Modular implant with secured porous portion
US8231387B2 (en) 2008-07-02 2012-07-31 Zimmer, Inc. Porous implant with non-porous threads
US9095396B2 (en) 2008-07-02 2015-08-04 Zimmer Dental, Inc. Porous implant with non-porous threads
US20100114314A1 (en) 2008-11-06 2010-05-06 Matthew Lomicka Expandable bone implant
EP2263991A1 (de) * 2009-06-19 2010-12-22 Nobel Biocare Services AG Zahnmedizinische Anwendungsbeschichtung
US9707058B2 (en) * 2009-07-10 2017-07-18 Zimmer Dental, Inc. Patient-specific implants with improved osseointegration
US8602782B2 (en) 2009-11-24 2013-12-10 Zimmer Dental, Inc. Porous implant device with improved core
DE102010020454B4 (de) 2010-03-30 2013-03-28 Mathys Ag Bettlach Verfahren und Vorrichtung zur Herstellung von Endoprothesen-Komponenten
US9434651B2 (en) 2012-05-26 2016-09-06 James R. Glidewell Dental Ceramics, Inc. Method of fabricating high light transmission zirconia blanks for milling into natural appearance dental appliances
WO2015168332A2 (en) 2014-04-30 2015-11-05 Osseodyne Surgical Solutions, Llc Osseointegrative surgical implant
US20160022570A1 (en) 2014-07-25 2016-01-28 Robert W. Adams Medical implant
US20160022819A1 (en) * 2014-07-25 2016-01-28 Robert W. Adams Medical implant
RU2585954C1 (ru) * 2014-12-15 2016-06-10 Федеральное государственное бюджетное учреждение науки Институт металлургии и материаловедения им. А.А. Байкова Российской академии наук (ИМЕТ РАН) Композиционный материал на основе фторгидроксиапатита и частично стабилизированного диоксида циркония для замещения костных дефектов
US11731312B2 (en) 2020-01-29 2023-08-22 James R. Glidewell Dental Ceramics, Inc. Casting apparatus, cast zirconia ceramic bodies and methods for making the same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5946911B2 (ja) * 1976-12-16 1984-11-15 住友化学工業株式会社 インプラント
JPS58163354A (ja) * 1982-03-19 1983-09-28 日本特殊陶業株式会社 人工関節
JPS59162173A (ja) * 1983-03-07 1984-09-13 東ソー株式会社 ジルコニア焼結体
JPS6036369A (ja) * 1983-08-09 1985-02-25 日本碍子株式会社 磁器製造法
US4626392A (en) * 1984-03-28 1986-12-02 Ngk Spark Plug Co., Ltd. Process for producing ceramic body for surgical implantation
EP0218853B1 (de) * 1985-09-06 1994-11-09 Toray Industries, Inc. Verfahren zur Herstellung eines gesinterten Zirkonoxidmaterials
SE453747B (sv) * 1986-07-10 1988-02-29 Svenska Silikatforskning Forfaringssett for ytmodifiering av oxidiska och icke-oxidiska keramiska ramaterial
DE3716589A1 (de) * 1987-05-18 1988-12-01 Max Planck Gesellschaft Verfahren zur herstellung von schneidwerkstoffen aus tetragonalem zirkoniumdioxid insbesondere fuer die bearbeitung von staehlen

Also Published As

Publication number Publication date
EP0328041A2 (de) 1989-08-16
DE68917947T2 (de) 1995-03-16
EP0328041B1 (de) 1994-09-07
US4983182A (en) 1991-01-08
EP0328041A3 (en) 1990-07-25

Similar Documents

Publication Publication Date Title
DE68917947T2 (de) Keramisches Implantat und Verfahren zu dessen Herstellung.
DE3879320T2 (de) Copolyester und verfahren zu dessen herstellung.
DE68918183T2 (de) Filterelement und Verfahren zu dessen Herstellung.
DE59007338D1 (de) Optisches Bauelement und Verfahren zu dessen Herstellung.
DE3780560D1 (de) Fuehler und verfahren zu dessen herstellung.
DE68918943T2 (de) Gewebeentzusammensetzung und verfahren.
DE68905448D1 (de) Siliziumpulver und verfahren zu seiner herstellung.
DE3882859D1 (de) Keramikverbundkoerper und verfahren zu seiner herstellung.
DE3887073T2 (de) Schmuckstück und Verfahren zu dessen Herstellung.
DE3775294D1 (de) Implantatwerkstoff und verfahren zu seiner herstellung.
DE3578375D1 (de) Knochenzement und verfahren zu seiner herstellung.
DE58904485D1 (de) Metallspongiosa und verfahren zu ihrer herstellung.
DE69017348T2 (de) Thyristor und Verfahren zu dessen Herstellung.
DE3884069T2 (de) Polysilazan und Verfahren zu dessen Herstellung.
DE3852150D1 (de) Polysilazan und Verfahren zu dessen Herstellung.
DE3888527D1 (de) Biologisch abbaubare und resorbierbare chirurgische materialien und verfahren zu deren herstellung.
DE68924533T2 (de) Knochenwachstumsmatrix und verfahren zu ihrer herstellung.
DE68922538D1 (de) Fäserchen enthaltender Streifen und Verfahren zu dessen Herstellung.
DE3879536D1 (de) Supraleitender keramischer film und verfahren zu dessen herstellung.
DE3776983D1 (de) Aschenbecherpulver und verfahren zu dessen herstellung.
ATE118220T1 (de) Kristallines menschliches proinsulin und verfahren zu dessen herstellung.
DE68914598T2 (de) Keramischer Verbundwerkstoff und Verfahren zu seiner Herstellung.
DE68906986T2 (de) Verfahren zur herstellung von chf20chfcf3 und chf20chclcf3 und dabei verwendete zwischenverbindungen.
DE3779946T2 (de) Antibiotikum a42125 und verfahren zu dessen herstellung.
DE69017404T2 (de) Diamantbeschichteter Sinterkörper und Verfahren zu seiner Herstellung.

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee