Inventor
YAMAGISHI AKIRA
JP26 patents
⚠️ This page may combine multiple inventors who share the name “YAMAGISHI AKIRA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
17 patentsUS10978237B2Apr 13, 2021
Core for stationary induction apparatus
HITACHI LTD2 citations71
US10755442B2Aug 25, 2020
Oil leakage detector and oil leakage detection method and image processing unit
HITACHI LTD2 citations71
US10234355B2Mar 19, 2019
Leakage oil detection system
HITACHI LTD2 citations71
US9898830B2Feb 20, 2018
Oil leakage detector and oil leakage detection method
HITACHI LTD4 citations71
US10665382B2May 26, 2020
Stationary induction apparatus
HITACHI LTD2 citations68
US10658106B2May 19, 2020
Stationary induction electrical apparatus
HITACHI LTD2 citations67
US11994448B2May 28, 2024
Leakage oil detection device and leakage oil detection method
HITACHI LTD0 citations52
US11494888B2Nov 8, 2022
Work terminal, oil leakage detection apparatus, and oil leakage detection method
HITACHI LTD0 citations51
US10509021B2Dec 17, 2019
Diagnosing device for on-load tap changing apparatus, diagnosing method for on-load tap changing apparatus, and diagnosing device for transformer
HITACHI LTD0 citations51
US9947453B2Apr 17, 2018
Stationary induction electric apparatus
HITACHI LTD1 citations51
US9691536B2Jun 27, 2017
Static apparatus
HITACHI LTD0 citations51
US10665381B2May 26, 2020
Stationary induction apparatus core
HITACHI LTD0 citations50
US10113933B2Oct 30, 2018
Leakage oil detector system and method
HITACHI LTD1 citations50
US9711274B2Jul 18, 2017
Stationary induction apparatus
HITACHI LTD0 citations50
US10403427B2Sep 3, 2019
Transformer
HITACHI LTD0 citations45
US9953744B2Apr 24, 2018
Electrical insulating paper and stationary induction electrical apparatus using the same
HITACHI LTD0 citations40
US10629355B2Apr 21, 2020
Stationary induction apparatus
HITACHI LTD0 citations38
SEIKO EPSON CORP
4 patentsUS11807007B2Nov 7, 2023
Capping device and liquid ejecting apparatus
SEIKO EPSON CORP2 citations71
US12545027B2Feb 10, 2026
Liquid ejection apparatus
SEIKO EPSON CORP0 citations62
US12128679B2Oct 29, 2024
Capping device and liquid ejecting apparatus
SEIKO EPSON CORP0 citations61
US10421281B2Sep 24, 2019
Liquid ejecting apparatus
SEIKO EPSON CORP0 citations52