Inventor
Christopher D. Cogan
Inventor
Clarkston, MI, US
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B22Dprimary
B22DCasting of metals50%
B22CFoundry moulding30%
C22BProduction and refining of metals10%
Y02PClimate change mitigation technologies in the production or processing of goods10%
PatentTitleYear
10,898,948Method of manufacturing metal castings20219,981,310Degassing and microstructure refinement of shape casting aluminum alloys20189,808,858'Method to improve riser feedability for semi-permanent mold casting of cylinder heads'20179,403,209'Methods for sand core gas evacuation and related systems and apparatus'20168,418,745'Pour ladle for molten metal'20138,327,915'Pour ladle for molten metal'2012Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2012–2013Patents assigned to GM GLOBAL TECH OPERATIONS INC (2)· patent assignee history
2012Patents assigned to COGAN CHRISTOPHER D (1)· patent assignee history
2012Patents assigned to FITCH STEPHEN M (1)· patent assignee history
2012Patents assigned to WANG QIGUI (1)· patent assignee history
2012–2016Based in Defiance, OH, US· patent location history
2016–2021Patents assigned to GM GLOBAL TECH OPERATIONS LLC (4)· patent assignee history
2017–2021Based in Clarkston, MI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GM GLOBAL TECH OPERATIONS LLC | 4 | 2016–2021 |
| GM GLOBAL TECH OPERATIONS INC | 2 | 2012–2013 |
| COGAN CHRISTOPHER Dself | 1 | 2012 |
| FITCH STEPHEN M | 1 | 2012 |
| WANG QIGUI | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Clarkston, MI, US | 3 | 2017–2021 |
| Defiance, OH, US | 3 | 2012–2016 |