Inventor

ZHANG GUOQIANG DAVID

US9 patents

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

MEMC ELECTRONIC MATERIALS

4 patents

US6454635B1Sep 24, 2002

Method and apparatus for a wafer carrier having an insert

MEMC ELECTRONIC MATERIALS58 citations95

US6709981B2Mar 23, 2004

Method and apparatus for processing a semiconductor wafer using novel final polishing method

MEMC ELECTRONIC MATERIALS52 citations89

US7323421B2Jan 29, 2008

Silicon wafer etching process and composition

MEMC ELECTRONIC MATERIALS26 citations88

US6179950B1Jan 30, 2001

Polishing pad and process for forming same

MEMC ELECTRONIC MATERIALS18 citations79

ERK HENRY F

2 patents

US8309464B2Nov 13, 2012

Methods for etching the edge of a silicon wafer

ERK HENRY F1 citations47

US8192822B2Jun 5, 2012

Edge etched silicon wafers

ERK HENRY F1 citations47

GLOBALWAFERS CO LTD

1 patent

US11355346B2Jun 7, 2022

Methods for processing semiconductor wafers having a polycrystalline finish

GLOBALWAFERS CO LTD0 citations57

SUNEDISON SEMICONDUCTOR LTD

1 patent

US10699908B2Jun 30, 2020

Methods for processing semiconductor wafers having a polycrystalline finish

SUNEDISON SEMICONDUCTOR LTD0 citations46

ZHANG GUOQIANG DAVID

1 patent

US8310031B2Nov 13, 2012

Semiconductor and solar wafers

ZHANG GUOQIANG DAVID0 citations44