Inventor
Dwayne E. Ortman
Inventor
Houston, TX, US
Overview
Patents· 1 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties50%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests50%
PatentTitleYear
4,062,225'Rotational viscometer and plastometer'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977Patents assigned to NL INDUSTRIES INC (1)· patent assignee history
1977Based in Houston, TX, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NL INDUSTRIES INC | 1 | 1977 |
Locations
| Location | Patents | Span |
|---|---|---|
| Houston, Texas, US | 1 | 1977 |