P

Inventor

YAMAZAWA YOHEI

JP72 patents
⚠️ This page may combine multiple inventors who share the name “YAMAZAWA YOHEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TOKYO ELECTRON LTD

32 patents
US9941097B2Apr 10, 2018

Plasma processing apparatus

TOKYO ELECTRON LTD110 citations99
US7951262B2May 31, 2011

Plasma processing apparatus and method

TOKYO ELECTRON LTD486 citations99
US7415940B2Aug 26, 2008

Plasma processor

TOKYO ELECTRON LTD75 citations98
US7988816B2Aug 2, 2011

Plasma processing apparatus and method

TOKYO ELECTRON LTD63 citations97
US7740737B2Jun 22, 2010

Plasma processing apparatus and method

TOKYO ELECTRON LTD25 citations92
US7582182B2Sep 1, 2009

Method and apparatus for measuring electron density of plasma and plasma processing apparatus

TOKYO ELECTRON LTD14 citations92
US7339656B2Mar 4, 2008

Method and apparatus for measuring electron density of plasma and plasma processing apparatus

TOKYO ELECTRON LTD20 citations92
US9997332B2Jun 12, 2018

Plasma processing apparatus and plasma processing method

TOKYO ELECTRON LTD11 citations84
US9953811B2Apr 24, 2018

Plasma processing method

TOKYO ELECTRON LTD16 citations84
US9490105B2Nov 8, 2016

Plasma processing apparatus and method

TOKYO ELECTRON LTD6 citations84
US7712436B2May 11, 2010

Plasma processing apparatus with filter circuit

TOKYO ELECTRON LTD15 citations84
US7432467B2Oct 7, 2008

Plasma processing apparatus

TOKYO ELECTRON LTD11 citations84
US7527016B2May 5, 2009

Plasma processing apparatus

TOKYO ELECTRON LTD16 citations82
US6448094B2Sep 10, 2002

Method of detecting etching depth

TOKYO ELECTRON LTD15 citations81
US11600474B2Mar 7, 2023

RF voltage and current (V-I) sensors and measurement methods

TOKYO ELECTRON LTD6 citations74
US7611603B2Nov 3, 2009

Plasma processing apparatus having impedance varying electrodes

TOKYO ELECTRON LTD7 citations74
US7462293B2Dec 9, 2008

Method and apparatus for measuring electron density of plasma and plasma processing apparatus

TOKYO ELECTRON LTD4 citations74
US11990318B2May 21, 2024

Filter circuit

TOKYO ELECTRON LTD2 citations73
US11410832B2Aug 9, 2022

RF measurement system and method

TOKYO ELECTRON LTD2 citations73
US10854431B2Dec 1, 2020

Plasma processing apparatus and method

TOKYO ELECTRON LTD2 citations73
US10804076B2Oct 13, 2020

Plasma processing apparatus and plasma processing method

TOKYO ELECTRON LTD3 citations73
US10546727B2Jan 28, 2020

Plasma processing apparatus and method

TOKYO ELECTRON LTD2 citations73
US10381197B2Aug 13, 2019

Transformer, plasma processing apparatus, and plasma processing method

TOKYO ELECTRON LTD2 citations73
US10020167B2Jul 10, 2018

Plasma processing apparatus

TOKYO ELECTRON LTD3 citations73
US9583312B2Feb 28, 2017

Film formation device, substrate processing device, and film formation method

TOKYO ELECTRON LTD5 citations73
US9167680B2Oct 20, 2015

Plasma processing apparatus, plasma generating apparatus, antenna structure and plasma generating method

TOKYO ELECTRON LTD5 citations73
US11817296B2Nov 14, 2023

RF voltage and current (V-I) sensors and measurement methods

TOKYO ELECTRON LTD2 citations72
US12451327B2Oct 21, 2025

Apparatus for plasma processing

TOKYO ELECTRON LTD1 citations64
US12586762B2Mar 24, 2026

Filter circuit

TOKYO ELECTRON LTD0 citations63
US10679867B2Jun 9, 2020

Plasma processing apparatus

TOKYO ELECTRON LTD1 citations63
US9899191B2Feb 20, 2018

Plasma processing apparatus

TOKYO ELECTRON LTD1 citations63
US9502215B2Nov 22, 2016

Plasma processing apparatus and plasma processing method

TOKYO ELECTRON LTD2 citations63

YAMAZAWA YOHEI

14 patents

KOSHIISHI AKIRA

2 patents

KOSHIMIZU CHISHIO

2 patents

Showing the top 50 of 72 patents by PatentIndex Score.