Electron source, method for manufacturing same, and device provided with electron source
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
May 14, 2024
Grant Date -
Jan 25, 2024
app pub date -
Dec 20, 2021
filing date -
Dec 20, 2021
priority date (Note) -
In Force
status (Latency Note)
Importance
Calculated Rating
|
US Family Size
|
Non-US Coverage
|
Abstract
A method for manufacturing an electron source includes steps of sandwiching a welding object in which a tip of an electron emission material and a tungsten filament overlap in direct contact between a pair of welding electrodes, and welding the tip and the tungsten filament by causing a current to flow while pressing forces are applied to the welding object by the pair of welding electrodes. A thickness of the welding object is within a range of 50 to 500 μm.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date | Type | Sub-Type |
|---|
International Classification(s)
- 2021 Application Filing Year
- H01J Class
- 2475 Applications Filed
- 1245 Patents Issued To-Date
- 50.31 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H01J Class
- 0 % this patent is cited more than
- 1 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Nov 14, 2027 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 14, 2031 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 14, 2035 |