Inventor

David A. Dunlap

Inventor

Portage, MI, US

Overview

1983–2020

Patent span

Human necessities

Primary field (CPC A)

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

A61Bprimary

A61BDiagnosis38%

A47CChairs15%

A61GTransport, personal conveyances, or accommodation specially adapted for patients or disabled persons15%

A61CDentistry8%

A61FFilters implantable into blood vessels8%

F23LSupplying air or non-combustible liquids or gases to combustion apparatus in general8%

Y10TTechnical subjects covered by former us classification8%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1983Based in Warrenville, IL, US· patent location history

1996–1998Patents assigned to RICHARD ALLAN MEDICAL IND INC (2)· patent assignee history

1996–2020Based in Portage, MI, US· patent location history

2000Patents assigned to IMAGYN MEDICAL TECHNOLOGIES (1)· patent assignee history

2006Patents assigned to GARRISON DENTAL SOLUTIONS (1)· patent assignee history

2011Patents assigned to COLLEGE PARK IND INC (1)· patent assignee history

2016–2020Patents assigned to STRYKER CORP (2)· patent assignee history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
RICHARD ALLAN MEDICAL IND INC	2	1996–1998
STRYKER CORP	2	2016–2020
COLLEGE PARK IND INC	1	2011
GARRISON DENTAL SOLUTIONS	1	2006
IMAGYN MEDICAL TECHNOLOGIES	1	2000

Locations

Location	Patents	Span
Portage, MI, US	9	1996–2020
Warrenville, Illinois, US	1	1983