LexDanaLexDanabeta
Inventor

David Vadnais

Inventor
St. Charles, MO, US

Overview

3→
Patents
1976–2004
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 3 as inventor

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

C30Bprimary
C30BSingle-crystal growth25%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests25%
B24BMachines, devices, or processes for grinding or polishing13%
G01BMeasuring length, thickness or similar linear dimensions13%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1013%
Y10TTechnical subjects covered by former us classification13%
PatentTitleYear
6,712,673'Polishing apparatus, polishing head and method'20046,030,887'Flattening process for epitaxial semiconductor wafers'20003,944,393'Apparatus for horizontal production of single crystal structure'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to MONSANTO CO (1)· patent assignee history
1976–2004Based in St. Charles, MO, US· patent location history
2000–2004Patents assigned to MEMC ELECTRONIC MATERIALS (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MEMC ELECTRONIC MATERIALS22000–2004
MONSANTO CO11976
Locations
LocationPatentsSpan
St. Charles, MO, US31976–2004