CA2018985A1 - Glass-metal seals - Google Patents
Glass-metal sealsInfo
- Publication number
- CA2018985A1 CA2018985A1 CA002018985A CA2018985A CA2018985A1 CA 2018985 A1 CA2018985 A1 CA 2018985A1 CA 002018985 A CA002018985 A CA 002018985A CA 2018985 A CA2018985 A CA 2018985A CA 2018985 A1 CA2018985 A1 CA 2018985A1
- Authority
- CA
- Canada
- Prior art keywords
- glass
- cell
- seal
- alumina
- titanium
- 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.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/24—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/191—Inorganic material
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL 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
- C03C3/00—Glass compositions
- C03C3/12—Silica-free oxide glass compositions
- C03C3/14—Silica-free oxide glass compositions containing boron
- C03C3/145—Silica-free oxide glass compositions containing boron containing aluminium or beryllium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/26—Lead-in insulators; Lead-through insulators
- H01B17/30—Sealing
- H01B17/303—Sealing of leads to lead-through insulators
- H01B17/305—Sealing of leads to lead-through insulators by embedding in glass or ceramic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Glass Compositions (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
IMPROVED GLASS-METAL SEALS
Abstract of the Disclosure Boroaluminasilicate glasses and blended compositions thereof with aluminum-silicate glasses as seals in feedthroughs.
Abstract of the Disclosure Boroaluminasilicate glasses and blended compositions thereof with aluminum-silicate glasses as seals in feedthroughs.
Description
~8~
l Background of the Invention 2 1. Field o~ the Invention 3 This invention relates to glass-metal seals and 4 metal-glass-metal seals, such as those in electrical feedthrough, commonlv incorporated into electrochemical 6 cells of non-aquaeous type, such as Li/So2~ SOCl2, MnO2 7 and organic electrolyte batteries and implantable pulse 8 generators, such as heart pacemakers and other such 9 medical devices. It is, however, broadly applicable to any sealed device re~uiring a feedthrough structure. For ll example, devices used in aerospace applications may 12 re~uire the improved feedthroughs of this invention.
13 Such seals must be hermetic, and/or moisture resistant 1~ (as to bodily fluids) and/or corrosion resistant. Such devices typically make use of a titanium or titanium 16 alloy contai.ner into which an electrical inlet lead, 17 including related feedthrough structure, is incorporated.
18 In its most simple configurations, the sealed inlet 19 arrangement may merely comprise an electrical pin or lead surrounded by the glass and sealed thereto, the glass 21 being positioned within an opening in the container and 22 sealed directly thereto as well (a header arrangement).
23 A titanium surround may be used around an opening when 24 the container is of another material. Other configurations may involve a titanium or titanium alloy 26 sleeve which holds the glass and electrical pin. The 27 sleeve is typically welded into the opening in the 28 device container.
29 Summary of the Inventio The teachings of the invention are best 31 realized in the use of Pemco 1409P type glass, herein 32 termed boroaluminasilicate-type glass, manufactured by 33 the Pemco Products Group of Mobay Chemical Corporation, a 34 division of Bayer USA, Inc., Baltimore, Md., as the sealing insulator in glass/metal seals, feedthroughs and ~89~
1 the like. It has been found that this glass readily 2 seals to titanium and lts alloys. To increase its 3 corrosion resistance, which is desirable in many 4 instances, the Pemco 1409P glass composition is preferably modified by blending it with various amounts 6 of a glass known in the art as TA-23, herein termed an 7 alumina-silicate glass. TA-23 glass is manufactured by 8 various sources to composition standards originally 9 established by Sandia.
Lastly, when seals using such glass 11 compositions are formed, the glass tends to attach to the 12 fixturing. This problem is addressed in the invention by 13 incorporating a barrier element of ceramic or a high 14 temperature glass into the seal structure.
Brief Description of the Drawings 16 Figs. 1 and 2 represent in schematic form 17 devices of any of the aforementioned type having a 18 titanium or titanium alloy container and a seal 19 arrangement of the inven-tion; and Fig. 3. represents in schematic form a graphite 21 fixture in which a seal of the invention including a 22 barrier element is typically fabricated.
23 Description of the Preferred Embodlments 24 While this invention may be embodied in many different forms, there are shown in the drawings and 26 described in detail herein specific preEerred embodiments 27 of the invention. The present disclosure is an 28 exemplification of the principles of the invention and is 29 not intended to limit the invention to the particular embodiments illustrated.
31 Referring to Fig. 1, a glass-metal seal of the 32 invention, in the form of a feedthrough, is shown. It 33 includes an electrical lead pin 10 sealed to a body of 34 insulating glass 12 held in a titanium or titanium alloy sleeve or ferrule 14 which is welded or otherwise sealed ~6 2013~
1 dixectly into a container 16 of a device of any of the 2 aforementioned types. Titanium alloys such as Ti - 6Al -3 4V, Ti - 5Al-2.5 Sn or Ti-6Al -2Cb - 1 TA - lMo may be 4 used for sleeve 14. Any titanium alloy which does not exhibit or can be made to limit alpha/beta grain growth 6 changes at the glass ~using temperatures of about 1000C
7 may be used in general. The term "titanium" is used 8 hereinafter to include titanium and its alloys.
9 Typically, pin 10 (or multiple pins 10 - not shown) will be selected from: tantalum, niobium, molybdenum, 11 tungsten, Kovar or an alloy thereof. If desired, the 12 sleeve may be omitted and, in cases where the container 13 is titanium or a t.itanium alloy, the glass may be sealed 14 directly to it as shown in Fig. 2 in a typical "header"
arrangement. A barrier element 18 may be included as 16 well. It is described further hereinbelow. Glass 17 insulator 12 is made into a preform body and then sealed 18 to pin 10 and to sleeve 1~, or to the container as 19 already noted, by fusing it in a tooling fixture. Glass 12 is of the Pemco 1409P type, having the following 21 nominal composition or equivalent 22 Wt %
23 sio2 B2O3 Al2O3 MgO CaO
24 44 29 14.4 10.2 2.2 26 This type of composition has been ~ound to readily seal 27 to titanium or titanium alloys.
28 To further improve the corrosion or moisture 29 resistance o~ the glass body 12, the Pemco `type composition may be blended with a type of 31 alumina-silicate glass as developed by Sandia National 32 Laboratories and known as TA-23 or equivalent, having the 33 nominal composition:
3~
i 2~ 9~
2 Wt %
3 SiO2 B2o3 Al~03 MgO CaO SrO L2O3 Coo 4 44.95 8.0 20.0 7.0 12.0 6.0 2.0 0.05 Such blended compositions are made into a preform and 6 fused for sealing as already described.
7 Various blends of the two foregoing glass 8 compositions may be used ranging in wt% from about 10% to 9 about 80~ TA-23, balance Pemco 1409P blend. A 50%/50%
blend is preferred, most preferred is a 70% - 80% TA-23, 11 balance Pemco 1409P blend. Sealing glass 12 may also be 12 initially prepared as a discrete overall composition in 13 which the oxide ratios as expressed above are 14 represented.
~anufacturing seals and feedthroughs with these 16 glass compositions is oftentimes difficult because of 17 reaction of the glass to the fixturing. It is typical to 18 make fixturing out of graphite working parts which, in 19 the presence of vapors from titanium and its alloys, causes the glass to attach to the fixturing. Such a 21 fixture is shown schematically in Fig. 3.
22 In its most preferred form, a glass-metal seal 23 of the invention wil]. include a ceramic or glass barrier 24 element 18 in the feedthrough structure, which is placed between the glass and the fixture 20, as shown in Fig. 3.
26 It is important that the barrier material selected ~e 27 compatible as to thermal and chemical stability with the 28 glass insulator 12. Mullite ceramic or MP30 high 29 temperature glass are preferred materials for barrier 18.
The latter is a proprietary glass composition of a 31 company identified as Electro-Glass Products of Mammoth, 32 PA.
33 The fixture, with parts arranged as shown in 34 Fig. 3 is placed in an oven and heated to fuse glass 12 to a melting temperature thereby forming a seal with all 2 0 11 8 ~
.
1 contacting parts upon cooling. Barrier element 18 being 2 resistant to such temperatures retains its shape and 3 settles into the glass 12.
4 The specific materials described herein for use with the various structural elements of a feedthrough 6 (lead pin or the like, glass and surrounding header, 7 sleeve or the like) when used in combination provide 8 compatible thermal expansion characteristics overall 9 having unique advantage.
This completes the description of the preferred 11 and alternate embodiments of the invention. Those 12 skilled in the art may recognize other equivalents to the 13 specific embodiment described herein, which equivalents 14 are intended to be encompassed by the claims attached hereto.
16 Having described the invention, the exclusive 17 rights and privileges thereto are to be defined by the 18 following claims in the light of the foregoing 19 description.
l Background of the Invention 2 1. Field o~ the Invention 3 This invention relates to glass-metal seals and 4 metal-glass-metal seals, such as those in electrical feedthrough, commonlv incorporated into electrochemical 6 cells of non-aquaeous type, such as Li/So2~ SOCl2, MnO2 7 and organic electrolyte batteries and implantable pulse 8 generators, such as heart pacemakers and other such 9 medical devices. It is, however, broadly applicable to any sealed device re~uiring a feedthrough structure. For ll example, devices used in aerospace applications may 12 re~uire the improved feedthroughs of this invention.
13 Such seals must be hermetic, and/or moisture resistant 1~ (as to bodily fluids) and/or corrosion resistant. Such devices typically make use of a titanium or titanium 16 alloy contai.ner into which an electrical inlet lead, 17 including related feedthrough structure, is incorporated.
18 In its most simple configurations, the sealed inlet 19 arrangement may merely comprise an electrical pin or lead surrounded by the glass and sealed thereto, the glass 21 being positioned within an opening in the container and 22 sealed directly thereto as well (a header arrangement).
23 A titanium surround may be used around an opening when 24 the container is of another material. Other configurations may involve a titanium or titanium alloy 26 sleeve which holds the glass and electrical pin. The 27 sleeve is typically welded into the opening in the 28 device container.
29 Summary of the Inventio The teachings of the invention are best 31 realized in the use of Pemco 1409P type glass, herein 32 termed boroaluminasilicate-type glass, manufactured by 33 the Pemco Products Group of Mobay Chemical Corporation, a 34 division of Bayer USA, Inc., Baltimore, Md., as the sealing insulator in glass/metal seals, feedthroughs and ~89~
1 the like. It has been found that this glass readily 2 seals to titanium and lts alloys. To increase its 3 corrosion resistance, which is desirable in many 4 instances, the Pemco 1409P glass composition is preferably modified by blending it with various amounts 6 of a glass known in the art as TA-23, herein termed an 7 alumina-silicate glass. TA-23 glass is manufactured by 8 various sources to composition standards originally 9 established by Sandia.
Lastly, when seals using such glass 11 compositions are formed, the glass tends to attach to the 12 fixturing. This problem is addressed in the invention by 13 incorporating a barrier element of ceramic or a high 14 temperature glass into the seal structure.
Brief Description of the Drawings 16 Figs. 1 and 2 represent in schematic form 17 devices of any of the aforementioned type having a 18 titanium or titanium alloy container and a seal 19 arrangement of the inven-tion; and Fig. 3. represents in schematic form a graphite 21 fixture in which a seal of the invention including a 22 barrier element is typically fabricated.
23 Description of the Preferred Embodlments 24 While this invention may be embodied in many different forms, there are shown in the drawings and 26 described in detail herein specific preEerred embodiments 27 of the invention. The present disclosure is an 28 exemplification of the principles of the invention and is 29 not intended to limit the invention to the particular embodiments illustrated.
31 Referring to Fig. 1, a glass-metal seal of the 32 invention, in the form of a feedthrough, is shown. It 33 includes an electrical lead pin 10 sealed to a body of 34 insulating glass 12 held in a titanium or titanium alloy sleeve or ferrule 14 which is welded or otherwise sealed ~6 2013~
1 dixectly into a container 16 of a device of any of the 2 aforementioned types. Titanium alloys such as Ti - 6Al -3 4V, Ti - 5Al-2.5 Sn or Ti-6Al -2Cb - 1 TA - lMo may be 4 used for sleeve 14. Any titanium alloy which does not exhibit or can be made to limit alpha/beta grain growth 6 changes at the glass ~using temperatures of about 1000C
7 may be used in general. The term "titanium" is used 8 hereinafter to include titanium and its alloys.
9 Typically, pin 10 (or multiple pins 10 - not shown) will be selected from: tantalum, niobium, molybdenum, 11 tungsten, Kovar or an alloy thereof. If desired, the 12 sleeve may be omitted and, in cases where the container 13 is titanium or a t.itanium alloy, the glass may be sealed 14 directly to it as shown in Fig. 2 in a typical "header"
arrangement. A barrier element 18 may be included as 16 well. It is described further hereinbelow. Glass 17 insulator 12 is made into a preform body and then sealed 18 to pin 10 and to sleeve 1~, or to the container as 19 already noted, by fusing it in a tooling fixture. Glass 12 is of the Pemco 1409P type, having the following 21 nominal composition or equivalent 22 Wt %
23 sio2 B2O3 Al2O3 MgO CaO
24 44 29 14.4 10.2 2.2 26 This type of composition has been ~ound to readily seal 27 to titanium or titanium alloys.
28 To further improve the corrosion or moisture 29 resistance o~ the glass body 12, the Pemco `type composition may be blended with a type of 31 alumina-silicate glass as developed by Sandia National 32 Laboratories and known as TA-23 or equivalent, having the 33 nominal composition:
3~
i 2~ 9~
2 Wt %
3 SiO2 B2o3 Al~03 MgO CaO SrO L2O3 Coo 4 44.95 8.0 20.0 7.0 12.0 6.0 2.0 0.05 Such blended compositions are made into a preform and 6 fused for sealing as already described.
7 Various blends of the two foregoing glass 8 compositions may be used ranging in wt% from about 10% to 9 about 80~ TA-23, balance Pemco 1409P blend. A 50%/50%
blend is preferred, most preferred is a 70% - 80% TA-23, 11 balance Pemco 1409P blend. Sealing glass 12 may also be 12 initially prepared as a discrete overall composition in 13 which the oxide ratios as expressed above are 14 represented.
~anufacturing seals and feedthroughs with these 16 glass compositions is oftentimes difficult because of 17 reaction of the glass to the fixturing. It is typical to 18 make fixturing out of graphite working parts which, in 19 the presence of vapors from titanium and its alloys, causes the glass to attach to the fixturing. Such a 21 fixture is shown schematically in Fig. 3.
22 In its most preferred form, a glass-metal seal 23 of the invention wil]. include a ceramic or glass barrier 24 element 18 in the feedthrough structure, which is placed between the glass and the fixture 20, as shown in Fig. 3.
26 It is important that the barrier material selected ~e 27 compatible as to thermal and chemical stability with the 28 glass insulator 12. Mullite ceramic or MP30 high 29 temperature glass are preferred materials for barrier 18.
The latter is a proprietary glass composition of a 31 company identified as Electro-Glass Products of Mammoth, 32 PA.
33 The fixture, with parts arranged as shown in 34 Fig. 3 is placed in an oven and heated to fuse glass 12 to a melting temperature thereby forming a seal with all 2 0 11 8 ~
.
1 contacting parts upon cooling. Barrier element 18 being 2 resistant to such temperatures retains its shape and 3 settles into the glass 12.
4 The specific materials described herein for use with the various structural elements of a feedthrough 6 (lead pin or the like, glass and surrounding header, 7 sleeve or the like) when used in combination provide 8 compatible thermal expansion characteristics overall 9 having unique advantage.
This completes the description of the preferred 11 and alternate embodiments of the invention. Those 12 skilled in the art may recognize other equivalents to the 13 specific embodiment described herein, which equivalents 14 are intended to be encompassed by the claims attached hereto.
16 Having described the invention, the exclusive 17 rights and privileges thereto are to be defined by the 18 following claims in the light of the foregoing 19 description.
Claims (31)
1. A glass-metal seal wherein the metal is titanium or one of its alloys and the glass is of a boroaluminasilicate composition as set forth herein.
2. The seal of Claim 1 wherein the glass includes as blended amount of the alumina-silicate glass as described herein.
3. The seal of Claim 2 wherein the alumina-silicate glass comprises about 10% to about 80%
by weight of the glass composition; the balance consisting essentially of the baroaluminiasilicate glass.
by weight of the glass composition; the balance consisting essentially of the baroaluminiasilicate glass.
4. The seal of Claim 3 wherein the alumina-silicate glass comprises about 50% of the glass composition.
5 . T h e s e a l o f C l a i m 3 w h e r e i n t h e alumina-silicate glass comprises about 70% to about 80%
of the glass composition.
of the glass composition.
6. The seal of Claim 1 including a glass or ceramic barrier member adjacent a portion of the glass which would normally haved contacted the fixture during fabrication and having a substantially matching thermal expansion coefficient.
7. The seal of Claim 6 wherein the ceramic is mullite.
8. The seal of Claim 1 including a glass barrier member adjacent a portion of the glass seal which would normally contact the fixture during fabrication and having a substantially matching thermal expansion coefficient with respect to the glass seal.
9. The seal of Claim 8 wherein the barrier glass is MP3 0 high temperature glass.
10. In a electrochemical cell of the type including a feedthrough opening in the cell container, the cell including:
a metallic portion at least around the opening consisting essentially of titanium or one of its alloys;
an electrical lead extending through the opening, and a glass insulator sealingly surrounding the lead and sealingly contacting the metallic portion of the container to provide a hermetic, moisture-resistant seal in the opening, the glass being of a boroaluminasilicate type as set forth herein.
a metallic portion at least around the opening consisting essentially of titanium or one of its alloys;
an electrical lead extending through the opening, and a glass insulator sealingly surrounding the lead and sealingly contacting the metallic portion of the container to provide a hermetic, moisture-resistant seal in the opening, the glass being of a boroaluminasilicate type as set forth herein.
11. The cell of Claim 10 wherein the metallic portion comprises a sleeve carried in the opening.
12. The cell of Claim 11 wherein the container is essentially of the titanium composition.
13. The cell of Claim 10 wherein the glass includes a blended amount of the alumina-silicate glass as described herein.
14. The cell of Claim 13 wherein the alumina-silicate glass comprises about 10% to about 80%
by weight of the glass composition; the balance consisting essentially of the Boroaluminasilicate glass.
by weight of the glass composition; the balance consisting essentially of the Boroaluminasilicate glass.
15. The cell of Claim 14 wherein the alumina-silicate glass comprises about 50% of the glass composition.
16. The cell of Claim 14 wherein the alumina-silica glass comprises about 70% to about 80% of the glass composition.
17. The cell of Claim 10 including a ceramic barrier member adjacent a portion of the glass seal which would normally contact the fixture during fabrication and having a substantially matching thermal expansion coefficient with respect to the glass seal.
18. The cell of Claim 17 wherein the ceramic is mullite.
19. The cell of Claim 10 wherein the material of the lead is selected from the group consisting of tantalum, niobium, molybdenum, tungsten, kovar, and alloys thereof.
20. The cell of Claim 17 including a glass barrier member adjacent a portion of the glass seal which would normally contact the fixture during fabrication and having a substantially matching thermal expansion coefficient with respect to the glass seal.
21. The cell of Claim 17 wherein the glass is MP30 high temperature glass.
22. The cell of Claim 10 wherein the cell chemistry is based on SOCl2
23. The cell of claim lo wherein the cell chemistry includes a lithium element.
24. The cell of Claim 10 wherein the cell chemistry is based on lithium and an organic electrolyte.
25. The cell of Claim 10 wherein the container is titanium or a titanium alloy and the glass is sealed directly thereto.
26. In an implantable device having at least one lead extending through a titanium or titanium alloy metallic surround, an improved feedthrough structure including a body of a boroaluminasilicate glass.
27. The combination of claim 26 wherein the glass includes a blended amount of an alumina-silicate glass.
28. The combination of claim 26 wherein the lead is of a material selected from the group consisting of tantalum, niobium, molybdenum, tungsten, Kovar, and alloys thereof.
29. A device comprising a container and an external lead extending thereunto thorough a feedthrough structure, the structure comprising a body of boroaluminasilicate glass sealed to a titanium surround positioned about an opening in the container, a lead extending through the glass.
30. The combination of claim 29 wherein the glass includes an amount of an alumina-silicate glass.
31. The combination of claim 29 wherein the lead is of a material selected from the group consisting of tantalum, niobium, molybdenum, tungsten, kovar, and alloys thereof.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US36643089A | 1989-06-15 | 1989-06-15 | |
| US07/366,430 | 1989-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2018985A1 true CA2018985A1 (en) | 1990-12-15 |
Family
ID=23442964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002018985A Abandoned CA2018985A1 (en) | 1989-06-15 | 1990-06-14 | Glass-metal seals |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0404435B1 (en) |
| JP (1) | JPH0397634A (en) |
| AU (1) | AU638020B2 (en) |
| CA (1) | CA2018985A1 (en) |
| DE (1) | DE69028579T2 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU635043B2 (en) * | 1989-07-12 | 1993-03-11 | Medtronic, Inc. | Lithium thionyl chloride resistant feedthrough |
| WO1997028395A1 (en) * | 1996-01-30 | 1997-08-07 | Westonbridge International Limited | Sealed coupling method |
| GB2354633A (en) * | 1998-12-11 | 2001-03-28 | Schlumberger Holdings | A method of sealing electrical cells which are used in a wellbore |
| AR029289A1 (en) * | 2000-07-05 | 2003-06-18 | Ishihara Sangyo Kaisha | DERIVED FROM BENZOILPIRIDINE OR ITS SALT, FUNGICIDE THAT CONTAINS IT AS AN ACTIVE INGREDIENT, ITS PRODUCTION AND INTERMEDIARY PROCESS TO PRODUCE IT |
| US6564106B2 (en) * | 2000-12-13 | 2003-05-13 | Medtronic, Inc. | Thin film electrodes for sensing cardiac depolarization signals |
| US8129622B2 (en) | 2006-11-30 | 2012-03-06 | Medtronic, Inc. | Insulator for feedthrough |
| US8288654B2 (en) | 2006-11-30 | 2012-10-16 | Medtronic, Inc. | Feedthrough assembly including a ferrule, an insulating structure and a glass |
| CN101186442B (en) | 2007-12-04 | 2010-12-08 | 北京科技大学 | A kind of high resistance glass for metal sealing |
| US8331077B2 (en) | 2009-01-12 | 2012-12-11 | Medtronic, Inc. | Capacitor for filtered feedthrough with annular member |
| US8373965B2 (en) | 2009-02-10 | 2013-02-12 | Medtronic, Inc. | Filtered feedthrough assembly and associated method |
| US9009935B2 (en) | 2009-05-06 | 2015-04-21 | Medtronic, Inc. | Methods to prevent high voltage arcing under capacitors used in filtered feedthroughs |
| JP2011149644A (en) * | 2010-01-22 | 2011-08-04 | Furuno Electric Co Ltd | Container, navigation data recording unit and navigation data recording apparatus |
| US8593816B2 (en) | 2011-09-21 | 2013-11-26 | Medtronic, Inc. | Compact connector assembly for implantable medical device |
| US9208929B2 (en) * | 2013-09-20 | 2015-12-08 | Schott Corporation | GTMS connector for oil and gas market |
| JP7017295B2 (en) * | 2015-05-20 | 2022-02-08 | 株式会社ノリタケカンパニーリミテド | Joining material and its use |
| DE102021120789A1 (en) | 2021-08-10 | 2023-02-16 | Schott Ag | Electrical feedthrough |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3802875A (en) * | 1972-10-24 | 1974-04-09 | Cabot Corp | Oxidation resistant alloys |
| IL60102A0 (en) * | 1979-07-03 | 1980-07-31 | Duracell Int | Electrochemical cell |
| CA1279694C (en) * | 1986-09-22 | 1991-01-29 | Richard L. Teaford | Terminal pin seal for a hermetic terminal assembly |
-
1990
- 1990-06-13 AU AU57063/90A patent/AU638020B2/en not_active Ceased
- 1990-06-14 CA CA002018985A patent/CA2018985A1/en not_active Abandoned
- 1990-06-14 DE DE69028579T patent/DE69028579T2/en not_active Expired - Fee Related
- 1990-06-14 EP EP90306480A patent/EP0404435B1/en not_active Expired - Lifetime
- 1990-06-15 JP JP2157376A patent/JPH0397634A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0397634A (en) | 1991-04-23 |
| DE69028579T2 (en) | 1997-03-27 |
| EP0404435B1 (en) | 1996-09-18 |
| DE69028579D1 (en) | 1996-10-24 |
| EP0404435A1 (en) | 1990-12-27 |
| AU5706390A (en) | 1990-12-20 |
| AU638020B2 (en) | 1993-06-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |