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Inventor

Kirk D. McCallum

Inventor
Wentzville, MO, US

Overview

4→
Patents
2002–2019
Patent span
Chemistry
Primary field (CPC C)

Patents· 4 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C30Bprimary
C30BSingle-crystal growth40%
H01LSemiconductor devices20%
H10DInorganic electric semiconductor devices20%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
Y10TTechnical subjects covered by former us classification10%
PatentTitleYear
10,513,796Methods for producing low oxygen silicon ingots20199,951,440Methods for producing low oxygen silicon ingots20186,482,263'Heat shield assembly for crystal pulling apparatus'20026,447,601'Crystal puller and method for growing monocrystalline silicon ingots'2002

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2002Patents assigned to MEMC ELECTRONIC MATERIALS (2)· patent assignee history
2002Based in Warrenton, MO, US· patent location history
2018Patents assigned to SUNEDISON SEMICONDUCTOR LTD (1)· patent assignee history
2018–2019Based in Wentzville, MO, US· patent location history
2019Patents assigned to GLOBALWAFERS CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MEMC ELECTRONIC MATERIALS22002
GLOBALWAFERS CO LTD12019
SUNEDISON SEMICONDUCTOR LTD12018
Locations
LocationPatentsSpan
Wentzville, MO, US22018–2019
Warrenton, MO, US22002