Inventor

Yoshiyuki Yamaguchi

Inventor
Yokohama, JP

Overview

14→
Patents
1991–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 14 as inventor

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

C08Gprimary
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds7%
C10GCracking hydrocarbon oils7%
G06FElectric digital data processing7%
H01LSemiconductor devices7%
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner7%
H03HImpedance networks, e.g. resonant circuits7%
H10NElectric solid-state devices not otherwise provided for7%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h107%
B23QDetails, components, or accessories for machine tools, e.g. arrangements for copying or controlling4%
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding4%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1992Patents assigned to ASAHI GLASS CO LTD (2)· patent assignee history
1991–1998Based in Yokohama, JP· patent location history
1996–2011Patents assigned to JAPAN PETROLEUM EXPLORATION CO (3)· patent assignee history
1996–2011Based in Tokyo, JP· patent location history
2005–2016Based in Kawasaki, JP· patent location history
2012–2016Patents assigned to YAMAGUCHI YOSHIYUKI (3)· patent assignee history
2013Patents assigned to AISIN AW CO (1)· patent assignee history
2016–2017Patents assigned to SEIKO EPSON CORP (2)· patent assignee history
2016–2017Based in Minowa, JP· patent location history
2020Based in Kyoto, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
JAPAN PETROLEUM EXPLORATION CO31996–2011
YAMAGUCHI YOSHIYUKIself32012–2016
ASAHI GLASS CO LTD21991–1992
SEIKO EPSON CORP22016–2017
AISIN AW CO12013
Locations
LocationPatentsSpan
Yokohama, JP31991–1998
Minowa, JP22016–2017
Kawasaki, JP22005–2016
Tokyo, JP21996–2011
Kyoto, JP12020