Inventor

Donald R. O'Keefe

Inventor

Roseville, MN, US

Overview

4→

Patents

1976–2002

Patent span

Performing operations

Primary field (CPC B)

Patents· 4 as inventor

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

B32Bprimary

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form30%

Y10TTechnical subjects covered by former us classification30%

B29CShaping or joining of plastics10%

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. inserts10%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds10%

E06BFixed or movable closures for openings in buildings, vehicles, fences or like enclosures in general, e.g. doors, windows, blinds, gates10%

PatentTitleYear

6,482,488'Repaired scratched and/or abraded transparent substrates having protective removable sheets thereon and a method of making'2002 6,461,709'Graffiti and/or environmental protective article having removable sheets, substrates protected therewith, and a method of use'2002 6,180,245'Method of repairing scratched and/or abraded transparent substrates and the repaired substrates'2001 3,963,680'One-part, room-temperature latent, curable isocyanate compositions'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to MINNESOTA MINING & MFG (1)· patent assignee history

1976Based in St. Paul, MN, US· patent location history

2001–2002Patents assigned to 3M INNOVATIVE PROPERTIES CO (3)· patent assignee history

2001–2002Based in Roseville, MN, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
3M INNOVATIVE PROPERTIES CO	3	2001–2002
MINNESOTA MINING & MFG	1	1976

Locations

Location	Patents	Span
Roseville, Minnesota, US	3	2001–2002
St. Paul, Minnesota, US	1	1976