Inventor
Roger L. Bredeweg
Inventor
Stevensville, MI, US
Overview
Patents· 12 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 properties47%
Y10TTechnical subjects covered by former us classification16%
F27DDetails or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace11%
H05BElectric heating11%
B01LChemical or physical laboratory apparatus for general use5%
F27BFurnaces, kilns, ovens or retorts in general5%
H01JElectric discharge tubes or discharge lamps5%
PatentTitleYear
4,622,009'Carbon, hydrogen, and nitrogen analyzer'19864,573,910'Carbon, hydrogen, and nitrogen analyzer'19864,525,328'Carbon, hydrogen, and nitrogen analyzer'19854,419,754'Furnace electrode'19834,371,971'Sample loading mechanism'19834,328,386'Crucible assembly'19824,290,296'Method and apparatus for gas dosing for linearization'19814,282,183'Combustion system'19814,238,450'Crucible loading-unloading system'19804,234,541'Combustion chamber cleaning apparatus'19804,050,995'Method for determining water vapor transmission rate or water content'19773,985,505'Combustion system'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1986Patents assigned to LECO CORP (11)· patent assignee history
1976–1986Based in Stevensville, MI, US· patent location history
1977Patents assigned to DOW CHEMICAL CO (1)· patent assignee history
1977Based in Midland, MI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| LECO CORP | 11 | 1976–1986 |
| DOW CHEMICAL CO | 1 | 1977 |
Locations
| Location | Patents | Span |
|---|---|---|
| Stevensville, MI, US | 11 | 1976–1986 |
| Midland, MI, US | 1 | 1977 |