Inventor

Ichiro Takayama

Inventor
Kanagawa, JP

Overview

18→
Patents
1991–2019
Patent span
Electricity
Primary field (CPC H)

Patents· 18 as inventor

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

G09Gprimary
G09GArrangements or circuits for control of indicating devices using static means to present variable information24%
H10DInorganic electric semiconductor devices24%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation14%
H02JElectric power networks7%
H10KOrganic electric solid-state devices7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein3%
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 systems3%
H04NPictorial communication, e.g. television3%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications3%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2007Patents assigned to SEMICONDUCTOR ENERGY LAB (14)· patent assignee history
1991–1993Based in Atsugi, JP· patent location history
1994–2000Based in Kanagawa, JP· patent location history
1996–2019Patents assigned to TDK CORP (14)· patent assignee history
2003–2019Based in Tokyo, JP· patent location history
2005–2007Based in Ibaraki, JP· patent location history
2012Patents assigned to TAKAYAMA ICHIRO (1)· patent assignee history
2012Patents assigned to TAMAKI KAZUTAKA (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SEMICONDUCTOR ENERGY LAB141991–2007
TDK CORP141996–2019
TAKAYAMA ICHIROself12012
TAMAKI KAZUTAKA12012
Locations
LocationPatentsSpan
Kanagawa, JP111994–2000
Tokyo, JP32003–2019
Ibaraki, JP22005–2007
Atsugi, JP21991–1993