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Inventor

Richard F. Griffith

Inventor
Minneapolis, MN, US

Overview

4→
Patents
2003–2013
Patent span
Physics
Primary field (CPC G)

Patents· 4 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus44%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein33%
H10HInorganic light-emitting semiconductor devices having potential barriers11%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1011%
PatentTitleYear
8,579,492'Optical film having microreplicated structures and methods'20137,695,180'Illumination assembly and system'20106,626,545'Light directing construction having corrosion resistant feature'20036,590,711'Light directing construction having corrosion resistant feature'2003

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2003–2013Patents assigned to 3M INNOVATIVE PROPERTIES CO (4)· patent assignee history
2003Based in Edina, MN, US· patent location history
2010–2013Based in Minneapolis, MN, US· patent location history
2013Patents assigned to CAMPBELL ALAN B (1)· patent assignee history
2013Patents assigned to EPSTEIN KENNETH A (1)· patent assignee history
2013Patents assigned to GRIFFITH RICHARD F (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
3M INNOVATIVE PROPERTIES CO42003–2013
CAMPBELL ALAN B12013
EPSTEIN KENNETH A12013
GRIFFITH RICHARD Fself12013
Locations
LocationPatentsSpan
Minneapolis, Minnesota, US22010–2013
Edina, Minnesota, US22003