Inventor
David L. Schroeder
Inventor
Franklin, IN, US
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Bprimary
A61BDiagnosis22%
A61MDevices for introducing media into, or onto, the body22%
C21CProcessing of pig-iron, e.g. refining, manufacture of wrought-iron or steel13%
Y02PClimate change mitigation technologies in the production or processing of goods9%
B01DSeparation4%
F27BFurnaces, kilns, ovens or retorts in general4%
F27DDetails or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace4%
G09BEducational or demonstration appliances4%
H02BBoards, substations or switching arrangements for the supply or distribution of electric power4%
H02JElectric power networks4%
PatentTitleYear
10,439,401Managing the outflow of a solar inverter20199,762,038'Independent shutter system for rack-in breakers'20178,770,981'Actuation mechanism for braille displays'2014RE042049'Surgical and pharmaceutical site access guide'20116,693,947'Method to protect the anode bottoms in batch DC electric arc furnace steel production'20046,447,477'Surgical and pharmaceutical site access guide and methods'20026,228,049'Surgical and pharmaceutical site access guide and methods'20016,203,524'Surgical and pharmaceutical site access guide and methods'20015,800,389'Biopsy device'1998D0370275'Motorcycle side marker light'19964,483,709'Steel production method'19843,998,626'Method for air pollution control combined with safe recovery and control of gases from a bottom-blown steel converter vessel'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1984Patents assigned to PENNSYLVANIA ENGINEERING CORP (2)· patent assignee history
1976–1984Based in Pittsburgh, PA, US· patent location history
1998–2002Patents assigned to EMX INC (3)· patent assignee history
1998–2011Based in Franklin, IN, US· patent location history
2004Patents assigned to D L SCHROEDER & ASSOCIATES (1)· patent assignee history
2014Patents assigned to BOGDA GRAHAM (1)· patent assignee history
2014Based in Aurora, IL, US· patent location history
2017Based in Marion, IA, US· patent location history
2019Patents assigned to DOOSAN GRIDTECH INC (1)· patent assignee history
2019Based in Port Townsend, WA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| EMX INC | 3 | 1998–2002 |
| PENNSYLVANIA ENGINEERING CORP | 2 | 1976–1984 |
| BOGDA GRAHAM | 1 | 2014 |
| D L SCHROEDER & ASSOCIATES | 1 | 2004 |
| DOOSAN GRIDTECH INC | 1 | 2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Franklin, IN, US | 5 | 1998–2011 |
| Pittsburgh, Pennsylvania, US | 2 | 1976–1984 |
| Port Townsend, Washington, US | 1 | 2019 |
| Marion, IA, US | 1 | 2017 |
| Aurora, Illinois, US | 1 | 2014 |