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
GB2717/21A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Publication of GB158509ApublicationCriticalpatent/GB158509A/en
H01J17/00—Gas-filled discharge tubes with solid cathode
H01J17/02—Details
H01J17/22—Means for obtaining or maintaining the desired pressure within the tube
H01J17/24—Means for absorbing or adsorbing gas, e.g. by gettering
Landscapes
Hydrogen, Water And Hydrids
(AREA)
Chemical Vapour Deposition
(AREA)
Lubricants
(AREA)
Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices
(AREA)
Solid-Sorbent Or Filter-Aiding Compositions
(AREA)
Abstract
158,509. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Jan. 22, 1920, [Convention date]. Vacuum tubes.-Traces of gases, other than hydrogen, are removed from rare gas in a discharge tube by introducing phosphorus into the tube, for instance, by subliming red phosphorus. Specification 153,331 is referred to.
GB2717/21A1920-01-221921-01-20Improvements in or relating to electric discharge tubes
ExpiredGB158509A
(en)
Improved methods of cleaning up residual gases in evacuated containers and/or activating electron-emitting electrodes therein also applicable for the purification of rare gases