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Inventor

Michael J. Petrich

Inventor
Lake Elmo, MN, US

Overview

3→
Patents
1992–2013
Patent span
Physics
Primary field (CPC G)

Patents· 3 as inventor

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

G03Gprimary
G03GElectrography33%
B41MPrinting, duplicating, marking, or copying processes17%
B44CProducing decorative effects17%
G02BOptical elements, systems or apparatus17%
Y10TTechnical subjects covered by former us classification17%
PatentTitleYear
8,506,095'Protective overlay bearing a graphic and retroreflective articles comprising the overlay'20135,262,259'Toner developed electrostatic imaging process for outdoor signs'19935,114,520'Image transfer apparatus and method'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–1993Patents assigned to MINNESOTA MINING & MFG (2)· patent assignee history
1992–2013Based in Lake Elmo, MN, US· patent location history
1993Based in Lakeland, MN, US· patent location history
2013Patents assigned to 3M INNOVATIVE PROPERTIES CO (1)· patent assignee history
2013Patents assigned to BACON JR CHESTER A (1)· patent assignee history
2013Patents assigned to CHEESEBROW THOMAS G (1)· patent assignee history
2013Patents assigned to CORN STEWART H (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MINNESOTA MINING & MFG21992–1993
3M INNOVATIVE PROPERTIES CO12013
BACON JR CHESTER A12013
CHEESEBROW THOMAS G12013
CORN STEWART H12013
Locations
LocationPatentsSpan
Lake Elmo, Minnesota, US21992–2013
Lakeland, Minnesota, US11993