1
Yoji Hasegawa, Shinji Ogawa, Daichi Imabayashi, Makoto Furukawa, Nobuyuki Yoshino, Junji Sato, Yoshirou Hirai, Naoto Ogasawara, Kuniyasu Kobayashi: Impregnated cathode having varying surface porosity. Sony Corporation, Citizen Watch, Cimeo Precision, Ronald P Kananen, Rader Fishamn and Grauer, June 26, 2001: US06252341 (4 worldwide citation)

An impregnated cathode and a method of manufacturing the same are provided for suppressing emission of unwanted electrons and particles generated from an excess electron emitting substance so as to achieve a steady electron emission characteristic. The impregnated cathode is placed directly beneath ...


2
Jyoji Karasawa, Masataka Santoku, Daichi Imabayashi: Cathode assembly and an electron gun having the same. Sony Corporation, Jay H Maioli, June 13, 1995: US05424606 (3 worldwide citation)

In a cathode assembly of a cathode ray tube, a cathode having an emitter is inserted in a through-hole formed in an insulator. The emitter is provided so as to face a cylindrical electrode of a first grid at a predetermined distance. A hole communicating with the through-hole is formed at a longitud ...


3
Yoji Hasegawa, Shinji Ogawa, Daichi Imabayashi, Makoto Furukawa, Nobuyuki Yoshino, Junji Sato, Yoshirou Hirai, Naoto Ogasawara, Kuniyasu Kobayashi: Impregnated cathode and method of manufacturing same, electron gun and electron tube. Sony Corporation, Citizen Watch, Cimeo Precision, Ronald P Kananen Esq, Rader Fishman & Grauer PLLC, July 30, 2002: US06425793 (2 worldwide citation)

An impregnated cathode and a method of manufacturing the same are provided for suppressing emission of unwanted electrons and particles generated from an excess electron emitting substance so as to achieve a steady electron emission characteristic. The impregnated cathode is placed directly beneath ...


4
Masataka Santoku, Jyoji Karasawa, Daichi Imabayashi: Electron gun of CRT and manufacturing method therefor. Sony Corporation, Hill Steadman & Simpson, May 7, 1996: US05514930

An electron gun cathode structure includes a support member made of an insulating material, a first grid fixed to the support member, and a cathode disposed on the side of the support member opposite to the first grid. A thermal expansion .DELTA.L.sub.s /L.sub.s of the insulating material constituti ...


5
Masataka Santoku, Jyoji Karasawa, Daichi Imabayashi: Electron gun of CRT and manufacturing method therefor. Sony Corporation, Hill Steadman & Simpson, December 16, 1997: US05697823

An electron gun cathode structure includes a support member made of an insulating material, a first grid fixed to the support member, and a cathode disposed on the side of the support member opposite to the first grid. A thermal expansion .DELTA.L.sub.S /L.sub.S of the insulating material constituti ...


6
Jyoji Karasawa, Masataka Santoku, Daichi Imabayashi: Cathode assembly for crt electron gun - has protective screen around cathode emitter between emitter and hole in insulator support of cylindrical grid electrode. Sony, November 26, 1993: FR2691577-A1

The cathode assembly includes a cathode (2) with an emitter (1) inserted in and spaced from an insulator (3). The emitter is positioned to face a cylindrical grid electrode (G1) at a predetermined distance. There is a hole (5) on the insulator side and a protective screen (6) tube in the cathode ass ...


7
Daichi Imabayashi: Impregnated cathode structure and method of manufacturing the structure. Sonnenschein Nath & Rosenthal, February 20, 2003: US20030034724-A1

An impregnated type cathode unit and a manufacturing method therefor wherein a porous metal base and a cup member can be firmly joined together without using any interposition and the occurrence of weld defects can be eliminated to improve the reliability and yield of welding between the porous meta ...



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