Inventor
David N. Erwin
Inventor
San Antonio, TX, US
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C12Mprimary
C12MApparatus for enzymology or microbiology22%
A61MDevices for introducing media into, or onto, the body11%
C03CChemical composition of glasses, glazes or vitreous enamels11%
G01NInvestigating or analysing materials by determining their chemical or physical properties11%
G01RMeasuring electric variables11%
H05BElectric heating11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
Y10TTechnical subjects covered by former us classification11%
Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–1992Patents assigned to US AIR FORCE (3)· patent assignee history
1990–1997Based in San Antonio, TX, US· patent location history
1994–1997Patents assigned to US ARMY (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| US AIR FORCE | 3 | 1990–1992 |
| US ARMY | 2 | 1994–1997 |
Locations
| Location | Patents | Span |
|---|---|---|
| San Antonio, Texas, US | 5 | 1990–1997 |