LexDanaLexDanabeta
Inventor

Munemitsu Hamada

Inventor
Tokyo, JP

Overview

9→
Patents
1989–2002
Patent span
Electricity
Primary field (CPC H)

Patents· 9 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H01Jprimary
H01JElectric discharge tubes or discharge lamps33%
C04BLime, magnesia13%
H01CResistors13%
H01GCapacitors13%
H10NElectric solid-state devices not otherwise provided for13%
Y10TTechnical subjects covered by former us classification13%
PatentTitleYear
6,432,325'Electrode'20026,383,416'Electron-emitting material and preparing process'20026,172,453'Discharge lamp electrode'20015,982,088'Ceramic cathode fluorescent discharge lamp'19995,793,276'Organic PTC thermistor'19985,091,820'Ceramic piezoelectric element with electrodes formed by reduction'19925,084,426'Semiconductive ceramic composition'19924,987,515'Ceramic capacitor with electrodes formed by reduction'19914,808,883'Discharge lamp device having semiconductor ceramic cathode'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2002Patents assigned to TDK CORP (9)· patent assignee history
1989–2002Based in Tokyo, JP· patent location history
1992Based in Akita, JP· patent location history
1999–2001Based in Ichikawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TDK CORP91989–2002
Locations
LocationPatentsSpan
Tokyo, JP61989–2002
Ichikawa, JP21999–2001
Akita, JP11992