Inventor

OKUMURA AKIHITO

JP11 patents

⚠️ This page may combine multiple inventors who share the name “OKUMURA AKIHITO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SEIKO INSTR INC

4 patents

US11424702B2Aug 23, 2022

Motor driving apparatus, motor driving method, and timepiece

SEIKO INSTR INC0 citations51

US11316454B2Apr 26, 2022

Stepping motor control device, timepiece and method for controlling stepping motor

SEIKO INSTR INC0 citations51

US10539927B2Jan 21, 2020

Timepiece, electronic device, and control method of timepiece

SEIKO INSTR INC0 citations49

US11175631B2Nov 16, 2021

Analog electronic timepiece, stepping motor control device, and analog electronic timepiece control method

SEIKO INSTR INC0 citations48

TOPPAN PRINTING CO LTD

2 patents

US10866521B2Dec 15, 2020

Exposure apparatus and exposure method

TOPPAN PRINTING CO LTD2 citations63

US11221559B2Jan 11, 2022

Photomask

TOPPAN PRINTING CO LTD0 citations57

SEIKO WATCH KK

2 patents

US12429828B2Sep 30, 2025

Watch

SEIKO WATCH KK0 citations61

US11909347B2Feb 20, 2024

Stepping motor control device, movement, timepiece, and stepping motor control method

SEIKO WATCH KK0 citations61

SEIKO WATCH KK TRADING AS SEIKO WATCH CORPORATION

1 patent

US12346068B2Jul 1, 2025

Stepping motor control device, movement, timepiece, and stepping motor control method

SEIKO WATCH KK TRADING AS SEIKO WATCH CORPORATION0 citations45

RENESAS ELECTRONICS CORP

1 patent

US10849105B2Nov 24, 2020

Wireless communication device and program for controlling communication mode of the same

RENESAS ELECTRONICS CORP0 citations38

TOSHIBA KK

1 patent

US9807616B2Oct 31, 2017

Electronic apparatus and control method thereof

TOSHIBA KK0 citations38