JPS5291358A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Direct heating cathode structure
Assignee: Hitachi Ltd
•
Filing: 1976-01-28
•
Granted: —
•
Expires: 1996-01-28
Abstract
Abstract PURPOSE: To prevent deformation in a substrate, avoid changes in the operation point and oxide peeling off in electron guns by coating, on the surface of the substrate, metal powder mainly composed of Ni, W, Mo and coated with Ni, Co or alloy thereof. COPYRIGHT: (C)1977,JPO&Japio
Inventors
- 👤 Akira Misumi
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-09 00:35
CPC Classifications
—
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.