GB1273654A - A grid wire or grid for use in an electron tube - Google Patents

A grid wire or grid for use in an electron tube

Info

Publication number
GB1273654A
GB1273654A GB3274670A GB3274670A GB1273654A GB 1273654 A GB1273654 A GB 1273654A GB 3274670 A GB3274670 A GB 3274670A GB 3274670 A GB3274670 A GB 3274670A GB 1273654 A GB1273654 A GB 1273654A
Authority
GB
United Kingdom
Prior art keywords
wire
grid
electron tube
microinches
electroplating
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
GB3274670A
Inventor
Henry John Albert
Johann Gunther Ernst Cohn
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.)
Engelhard Minerals and Chemicals Corp
Original Assignee
Engelhard Minerals and Chemicals 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
Application filed by Engelhard Minerals and Chemicals Corp filed Critical Engelhard Minerals and Chemicals Corp
Publication of GB1273654A publication Critical patent/GB1273654A/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
    • H01J19/28—Non-electron-emitting electrodes; Screens
    • H01J19/30—Non-electron-emitting electrodes; Screens characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0012—Constructional arrangements
    • H01J2893/0019—Chemical composition and manufacture

Landscapes

  • Cold Cathode And The Manufacture (AREA)
  • Solid Thermionic Cathode (AREA)

Abstract

1,273,654. Electrode materials. ENGELHARD MINERALS & CHEMICALS CORP. 6 July, 1970 [7 July, 1969], No. 32746/70. Heading H1D. [Also in Division C7] A grid wire comprises a W, Mo and/or Ta or alloy thereof wire coated with 5 to 20 microinches Au then with Os. The wire is made by electroplating a flash coating of Au 5-20 microinches thick on to the wire, heating the wire to 800-1000‹ C. in H 2 , electroplating a layer of Os 10-150 microinches thick and heating in vacuum at 600-1200‹ C. The wire may be first formed into a grid and then coated.
GB3274670A 1969-07-07 1970-07-06 A grid wire or grid for use in an electron tube Expired GB1273654A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83969169A 1969-07-07 1969-07-07

Publications (1)

Publication Number Publication Date
GB1273654A true GB1273654A (en) 1972-05-10

Family

ID=25280408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3274670A Expired GB1273654A (en) 1969-07-07 1970-07-06 A grid wire or grid for use in an electron tube

Country Status (3)

Country Link
DE (1) DE2033394A1 (en)
FR (1) FR2054118A5 (en)
GB (1) GB1273654A (en)

Also Published As

Publication number Publication date
FR2054118A5 (en) 1971-04-16
DE2033394A1 (en) 1971-01-14

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees