GB689976A - A process for the treatment of ceramic insulating elements for fixing the electrodesof electron discharge tubes - Google Patents

A process for the treatment of ceramic insulating elements for fixing the electrodesof electron discharge tubes

Info

Publication number
GB689976A
GB689976A GB9130/50A GB913050A GB689976A GB 689976 A GB689976 A GB 689976A GB 9130/50 A GB9130/50 A GB 9130/50A GB 913050 A GB913050 A GB 913050A GB 689976 A GB689976 A GB 689976A
Authority
GB
United Kingdom
Prior art keywords
discharge tubes
ceramic insulating
elements
fixing
insulating elements
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
Application number
GB9130/50A
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.)
Egyesuelt Izzolampa es Villamossagi Rt
Original Assignee
Egyesuelt Izzolampa es Villamossagi Rt
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 Egyesuelt Izzolampa es Villamossagi Rt filed Critical Egyesuelt Izzolampa es Villamossagi Rt
Publication of GB689976A publication Critical patent/GB689976A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
    • H01J19/44—Insulation between electrodes or supports within the vacuum space
    • 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
    • C04B41/53—After-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
    • C04B41/5338—Etching
    • C04B41/5353—Wet etching, e.g. with etchants dissolved in organic solvents

Abstract

689,976. Electric discharge tubes. EGYESULT IZZOLAMPA ES VILLA-MOSSAGI R. T. April 13, 1950 [June 17, 1949], No. 9130/50. Class 39(i). Process for treating ceramic insulating elements fixing the electrodes of electric discharge tubes in position comprises subjecting the surfaces of the elements to the action of one or more substances which are capable of dissolving parts of the elements to produce a roughened surface thereon. A 10 per cent solution of hydrofluoric acid can be used for ceramic insulating elements containing silica. Elements containing aluminium oxide can be boiled in 30-40 per cent acid solutions. Elements containing calcium oxide can be boiled in a 20 per cent solution of hydrochloric acid.
GB9130/50A 1949-06-17 1950-04-13 A process for the treatment of ceramic insulating elements for fixing the electrodesof electron discharge tubes Expired GB689976A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU689976X 1949-06-17

Publications (1)

Publication Number Publication Date
GB689976A true GB689976A (en) 1953-04-08

Family

ID=10979998

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9130/50A Expired GB689976A (en) 1949-06-17 1950-04-13 A process for the treatment of ceramic insulating elements for fixing the electrodesof electron discharge tubes

Country Status (1)

Country Link
GB (1) GB689976A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0580368A2 (en) * 1992-07-21 1994-01-26 Seagate Technology International Studless thin film magnetic head and process for making the same
US5650897A (en) * 1992-07-21 1997-07-22 Seagate Technology, Inc. Thin film magnetic head including lightning arrester and process for making the same

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0580368A2 (en) * 1992-07-21 1994-01-26 Seagate Technology International Studless thin film magnetic head and process for making the same
EP0580368A3 (en) * 1992-07-21 1996-03-20 Seagate Technology Studless thin film magnetic head and process for making the same
US5650897A (en) * 1992-07-21 1997-07-22 Seagate Technology, Inc. Thin film magnetic head including lightning arrester and process for making the same
US5657192A (en) * 1992-07-21 1997-08-12 Seagate Technology, Inc. Thin film magnetic head including crater for recessed structure and process for making the same
US5659451A (en) * 1992-07-21 1997-08-19 Seagate Technology, Inc. Studless thin film magnetic head and process for making the same
US5820770A (en) * 1992-07-21 1998-10-13 Seagate Technology, Inc. Thin film magnetic head including vias formed in alumina layer and process for making the same
US5835315A (en) * 1992-07-21 1998-11-10 Seagate Technology, Inc. Wafer including scribe line grooves for separating thin film heads and process for making the same
EP0938079A2 (en) * 1992-07-21 1999-08-25 Seagate Technology International Studless thin film magnetic head and process for making the same
EP0938079A3 (en) * 1992-07-21 1999-09-15 Seagate Technology International Studless thin film magnetic head and process for making the same
US6059984A (en) * 1992-07-21 2000-05-09 Seagate Technology, Inc. Process for fabricating thin film magnetic head including crater for recessed structure
US6635184B1 (en) 1992-07-21 2003-10-21 Uri Cohen Method for pattern-etching alumina layers and products

Similar Documents

Publication Publication Date Title
GB671352A (en) Improvements in or relating to electrical discharge devices
CA478611A (en) Etching processes and solutions
GB689976A (en) A process for the treatment of ceramic insulating elements for fixing the electrodesof electron discharge tubes
GB1358809A (en) Method of treating a glass body
GB670582A (en) Improvements in or relating to electron discharge devices employing secondary-electron-emission and electrodes for use therein
JPS5279299A (en) High frequency insulating magnetis porcelain
CA459978A (en) Process for treating acid sludge
SU87964A1 (en) The composition of the ceramic mass for the manufacture of products used in radio engineering
CH296818A (en) Process for the production of contact springs used in electrical switchgear.
CA458113A (en) Acid treating of distillates
SU341765A1 (en)
GB677035A (en) Improvements in or relating to gas and/or vapour filled electric discharge tubes
GB515633A (en) Improvements in or relating to the production of ceramic dielectrics
SU380586A1 (en) METHOD FOR DETERMINING SODIUM SODIUM
GB603623A (en) Improved manufacture of glass having low power factor
SU138981A1 (en) Vakuumnoplotna steatite ceramics
JPS5227007A (en) Electrode to be used for producing aluminium electrolytically
CA460262A (en) Manufacture of sulphamic acid
CA461064A (en) Production of oxalic acid
GB719269A (en) Improvements relating to the manufacture of electric discharge lamps
GB622560A (en) Process for extracting gallium oxide from aluminous substances
CA457021A (en) Acid treatment of naphthacridine type vat dyestuffs
AU145421B2 (en) Improvements in or relating to circuit arrangements embodying cathode ray tubes
AU149661B2 (en) Improvements relating to electrical heat treatment furnaces
GB700979A (en) Improvements in three electrode semi-conductor devices