Inventor

Leif R. Simonsen

Inventor
Kirkland, WA, US

Overview

4→
Patents
1989–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 4 as inventor

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

B29Cprimary
B29CShaping or joining of plastics7%
B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts7%
B33YAdditive manufacturing, i.e. manufacturing of three-dimensional [3d] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3d printing, stereolithography or selective laser sintering7%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds7%
C08LCompositions of macromolecular compounds7%
D02GCrimping or curling fibres, filaments, threads, or yarns7%
D10BIndexing scheme associated with sublasses of section d, relating to textiles7%
H01LSemiconductor devices7%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy7%
H10HInorganic light-emitting semiconductor devices having potential barriers7%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989Patents assigned to UNIV MICHIGAN ANN ARBOR (1)· patent assignee history
1989Based in Ann Arbor, MI, US· patent location history
1994Patents assigned to DU PONT (1)· patent assignee history
1994Based in Salisbury, MD, US· patent location history
2021Patents assigned to FACEBOOK TECH LLC (2)· patent assignee history
2021Based in Kirkland, WA, US· patent location history
2021Based in Seattle, WA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FACEBOOK TECH LLC22021
DU PONT11994
UNIV MICHIGAN ANN ARBOR11989
Locations
LocationPatentsSpan
Kirkland, Washington, US12021
Seattle, Washington, US12021
Salisbury, Maryland, US11994
Ann Arbor, MI, US11989