LexDanaLexDanabeta
Inventor

Akihiro Hirota

Inventor
Tokyo, JP

Overview

17→
Patents
1999–2020
Patent span
Physics
Primary field (CPC G)

Patents· 17 as inventor

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

G11Cprimary
G11CStatic stores50%
B60LPropulsion of electrically-propelled vehicles8%
B62DMotor vehicles8%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy8%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution8%
Y02TClimate change mitigation technologies related to transportation8%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles4%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for4%
G01RMeasuring electric variables4%
PatentTitleYear
10,818,337Semiconductor memory device for preventing occurrence of row hammer issue202010,173,730Vehicle front structure20199,865,327'Semiconductor memory apparatus'20189,643,516'Vehicle drive battery attachment structure'20179,387,883'Vehicle front portion structure'20168,863,878'Vehicle battery mounting structure'20148,743,648'Internal power source voltage generating circuit of semiconductor memory and method for generating internal power source voltage'20148,547,082'Semiconductor device and pulse width detection method'20138,243,531'Reference potential generating circuit of semiconductor memory'20128,233,346'Start-up circuit of internal power supply of semiconductor memory'20128,225,149'Semiconductor testing apparatus and method'20128,179,738'Internal power supply control circuit of semiconductor memory'20127,965,065'Trimming circuit'20116,791,894'DRAM power-source controller that reduces current consumption during standby'20046,574,150'Dynamic random access memory with low power consumption'20036,438,061'Dynamic random access memory with low power consumption'20025,949,729'Memory device with current limiting feature'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999–2004Patents assigned to OKI ELECTRIC IND CO LTD (4)· patent assignee history
1999–2020Based in Tokyo, JP· patent location history
2011–2013Patents assigned to OKI SEMICONDUCTOR CO LTD (5)· patent assignee history
2012–2014Patents assigned to HIROTA AKIHIRO (7)· patent assignee history
2012–2014Patents assigned to LAPIS SEMICONDUCTOR CO LTD (2)· patent assignee history
2014–2019Patents assigned to TOYOTA MOTOR CO LTD (4)· patent assignee history
2014–2019Based in Toyota, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HIROTA AKIHIROself72012–2014
OKI SEMICONDUCTOR CO LTD52011–2013
OKI ELECTRIC IND CO LTD41999–2004
TOYOTA MOTOR CO LTD42014–2019
LAPIS SEMICONDUCTOR CO LTD22012–2014
Locations
LocationPatentsSpan
Tokyo, JP131999–2020
Toyota, JP42014–2019