Inventor
NAGENGAST ANDREW J
US44 patents
⚠️ This page may combine multiple inventors who share the name “NAGENGAST ANDREW J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
APPLIED MATERIALS INC
34 patentsUS8021215B2Sep 20, 2011
Carrier head with retaining ring and carrier ring
APPLIED MATERIALS INC19 citations93
US7950985B2May 31, 2011
Flexible membrane for carrier head
APPLIED MATERIALS INC27 citations93
US7727055B2Jun 1, 2010
Flexible membrane for carrier head
APPLIED MATERIALS INC28 citations93
US7699688B2Apr 20, 2010
Carrier ring for carrier head
APPLIED MATERIALS INC26 citations93
US7654888B2Feb 2, 2010
Carrier head with retaining ring and carrier ring
APPLIED MATERIALS INC33 citations93
US7575504B2Aug 18, 2009
Retaining ring, flexible membrane for applying load to a retaining ring, and retaining ring assembly
APPLIED MATERIALS INC41 citations93
US9368371B2Jun 14, 2016
Retaining ring having inner surfaces with facets
APPLIED MATERIALS INC21 citations92
US11056350B2Jul 6, 2021
Retaining ring having inner surfaces with facets
APPLIED MATERIALS INC6 citations84
US8808062B2Aug 19, 2014
Multi-chamber carrier head with a textured membrane
APPLIED MATERIALS INC8 citations84
US7901273B2Mar 8, 2011
Carrier ring for carrier head
APPLIED MATERIALS INC11 citations84
US10500695B2Dec 10, 2019
Retaining ring having inner surfaces with features
APPLIED MATERIALS INC9 citations83
US7255637B2Aug 14, 2007
Carrier head vibration damping
APPLIED MATERIALS INC7 citations74
US12033865B2Jul 9, 2024
Retaining ring having inner surfaces with facets
APPLIED MATERIALS INC1 citations73
US11682561B2Jun 20, 2023
Retaining ring having inner surfaces with facets
APPLIED MATERIALS INC2 citations73
US10702971B2Jul 7, 2020
Textured membrane for a multi-chamber carrier head
APPLIED MATERIALS INC2 citations73
US12048981B2Jul 30, 2024
Retaining ring having inner surfaces with features
APPLIED MATERIALS INC1 citations72
US11453099B2Sep 27, 2022
Retaining ring having inner surfaces with features
APPLIED MATERIALS INC3 citations72
US10322492B2Jun 18, 2019
Retaining ring for CMP
APPLIED MATERIALS INC3 citations72
US8535121B2Sep 17, 2013
Retaining ring and articles for carrier head
APPLIED MATERIALS INC3 citations63
US8376813B2Feb 19, 2013
Retaining ring and articles for carrier head
APPLIED MATERIALS INC1 citations63
US12434348B2Oct 7, 2025
Retaining ring having inner surfaces with features
APPLIED MATERIALS INC0 citations62
US12330262B2Jun 17, 2025
Dual membrane carrier head for chemical mechanical polishing
APPLIED MATERIALS INC0 citations62
US11945073B2Apr 2, 2024
Dual membrane carrier head for chemical mechanical polishing
APPLIED MATERIALS INC0 citations62
US11724357B2Aug 15, 2023
Pivotable substrate retaining ring
APPLIED MATERIALS INC0 citations62
US11673226B2Jun 13, 2023
Retaining ring for CMP
APPLIED MATERIALS INC0 citations62
US11511390B2Nov 29, 2022
Pivotable substrate retaining ring
APPLIED MATERIALS INC1 citations62
US9452505B2Sep 27, 2016
Textured membrane for a multi-chamber carrier head
APPLIED MATERIALS INC2 citations62
US12030156B2Jul 9, 2024
Polishing carrier head with piezoelectric pressure control
APPLIED MATERIALS INC0 citations60
US11890715B2Feb 6, 2024
Polishing carrier head with piezoelectric pressure control
APPLIED MATERIALS INC0 citations60
US12515296B2Jan 6, 2026
Polishing carrier head with floating edge control
APPLIED MATERIALS INC0 citations52
US11931857B2Mar 19, 2024
Deformable substrate chuck
APPLIED MATERIALS INC0 citations52
US11344991B2May 31, 2022
Retainer for chemical mechanical polishing carrier head
APPLIED MATERIALS INC0 citations52
US12551981B2Feb 17, 2026
Machine learning for classifying retaining rings
APPLIED MATERIALS INC0 citations51
US11780049B2Oct 10, 2023
Polishing carrier head with multiple angular pressurizable zones
APPLIED MATERIALS INC0 citations51
ZUNIGA STEVEN M
5 patentsUS8469776B2Jun 25, 2013
Flexible membrane for carrier head
ZUNIGA STEVEN M20 citations92
US8151852B2Apr 10, 2012
Bonding apparatus and method
ZUNIGA STEVEN M5 citations60
US8334191B2Dec 18, 2012
Two-chamber system and method for serial bonding and exfoliation of multiple workpieces
ZUNIGA STEVEN M2 citations57
US8545660B1Oct 1, 2013
Bonding apparatus and method
ZUNIGA STEVEN M0 citations50
US8207047B2Jun 26, 2012
Apparatus and method for simultaneous treatment of multiple workpieces
ZUNIGA STEVEN M0 citations37