Inventor
Ludwig Wirth
Inventor
Wiesbaden, DE
Overview
Patents· 3 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C04Bprimary
C04BLime, magnesia25%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
B01DSeparation8%
B28BShaping clay or other ceramic compositions8%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form8%
F27BFurnaces, kilns, ovens or retorts in general8%
F27DDetails or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace8%
F27MIndexing scheme relating to aspects of the charges or furnaces, kilns, ovens or retorts8%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
4,950,362'Heat-insulating shaped fibrous articles and a process for producing them'19904,737,326'Refractory shapes of ceramic fiber-containing material'19884,710,480'Method of ceramic molding which produces a porosity gradient and the manufacture of compound moldings using this method'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–1990Patents assigned to DIDIER WERKE AG (3)· patent assignee history
1987–1990Based in Wiesbaden, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DIDIER WERKE AG | 3 | 1987–1990 |
Locations
| Location | Patents | Span |
|---|---|---|
| Wiesbaden, DE | 3 | 1987–1990 |