Inventor

Seiji Yamahira

Inventor
Kyoto, JP

Overview

22→
Patents
2005–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 22 as inventor

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

H02Mprimary
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems26%
G11CStatic stores21%
H03KPulse technique12%
G06FElectric digital data processing9%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light6%
G05FSystems for regulating electric or magnetic variables6%
H01LSemiconductor devices6%
H04NPictorial communication, e.g. television6%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation6%
G01NInvestigating or analysing materials by determining their chemical or physical properties3%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2005–2008Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (5)· patent assignee history
2005–2006Based in Osaka, JP· patent location history
2005Based in Hirakata, JP· patent location history
2008–2018Patents assigned to PANASONIC CORP (14)· patent assignee history
2008–2021Based in Kyoto, JP· patent location history
2011–2013Patents assigned to YAMAHIRA SEIJI (3)· patent assignee history
2016–2021Patents assigned to PANASONIC IP MAN CO LTD (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
PANASONIC CORP142008–2018
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD52005–2008
PANASONIC IP MAN CO LTD42016–2021
YAMAHIRA SEIJIself32011–2013
Locations
LocationPatentsSpan
Kyoto, JP182008–2021
Osaka, JP32005–2006
Hirakata, JP12005