Title:
TUNGSTEN-INCLUDING MATERIAL, AND DIRECT CURRENT DISCARGE LAMP ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2023/199921
Kind Code:
A1
Abstract:
A tungsten-including material that demonstrates an oxygen generation quantity of greater than 1 ppm and less than or equal to 20 ppm at 2100°C to 2300°C, as detected by oxygen analysis according to an oxygen separator method, and includes 5 ppm to 30 ppm of potassium.
Inventors:
NISHINO HIDENOBU (JP)
Application Number:
PCT/JP2023/014759
Publication Date:
October 19, 2023
Filing Date:
April 11, 2023
Export Citation:
Assignee:
ALMT CORP (JP)
International Classes:
C22C27/04; C22C1/04; C22F1/00; C22F1/18; H01J61/06
Foreign References:
| JP2005183355A | 2005-07-07 | |||
| JP2007115615A | 2007-05-10 | |||
| JP2001226735A | 2001-08-21 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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