P

Inventor

KUSAKA HIROYUKI

JP31 patents
⚠️ This page may combine multiple inventors who share the name “KUSAKA HIROYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FUJIKURA LTD

15 patents
US9448425B2Sep 20, 2016

Optical waveguide element and optical modulator

FUJIKURA LTD24 citations94
US9529151B2Dec 27, 2016

Polarization conversion element

FUJIKURA LTD21 citations92
US9857534B2Jan 2, 2018

Optical waveguide device having a light absorber for split out modes

FUJIKURA LTD9 citations84
US9557482B2Jan 31, 2017

High-order polarization conversion device, optical waveguide device, and DP-QPSK modulator

FUJIKURA LTD15 citations84
US9817294B2Nov 14, 2017

Optical modulation device

FUJIKURA LTD12 citations83
US9335472B2May 10, 2016

Planar optical waveguide device and DP-QPSK modulator

FUJIKURA LTD4 citations73
US12578516B2Mar 17, 2026

Light diffraction element unit and optical computation device

FUJIKURA LTD0 citations62
US12481305B2Nov 25, 2025

Optical computing system

FUJIKURA LTD0 citations62
US12429706B2Sep 30, 2025

Optical arithmetic device

FUJIKURA LTD0 citations62
US12256160B2Mar 18, 2025

Imaging device, imaging method, and method for producing the imaging device

FUJIKURA LTD0 citations62
US11316315B2Apr 26, 2022

Filter element, laser device, fiber laser device, filter method, and method for manufacturing laser device

FUJIKURA LTD0 citations62
US12500387B2Dec 16, 2025

Optical amplification apparatus

FUJIKURA LTD0 citations52
US12242079B2Mar 4, 2025

Light diffraction element and optical computing system

FUJIKURA LTD0 citations52
US9008476B2Apr 14, 2015

Polarization conversion device

FUJIKURA LTD1 citations52
US9857533B2Jan 2, 2018

Optical waveguide element, light-receiving device, optical communication device, optical modulator, optical resonator, and method for manufacturing optical waveguide element

FUJIKURA LTD0 citations41

TOSHIBA KK

7 patents

KUSAKA HIROYUKI

4 patents

SANYO ELECTRIC CO

3 patents

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

1 patent

IWATANI & CO

1 patent