Inventor
Eberhard Fischer
Inventor
Butthard, DE
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B22Dprimary
B22DCasting of metals25%
G01NInvestigating or analysing materials by determining their chemical or physical properties25%
C01BNon-metallic elements13%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds13%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds13%
G10KSound-producing devices13%
PatentTitleYear
7,594,439'Method and device for ultrasonic testing of a workpiece having an uneven surface'20095,992,235'Ultrasonic test head and method for its operation'19995,632,325'Process and apparatus for strand-casting near final size cast formats'19975,595,237'Horizontal continuous casting apparatus for metals'19975,144,005'Continuous process for removing unstable components from crude oxymethylene copolymer'19924,529,795'Process for recovering and purifying unreacted propylene during mass polymerization of liquid propylene'19854,010,240'Process for the regeneration of sulfuric acid'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1992Patents assigned to HOECHST AG (3)· patent assignee history
1977Based in Hofheim, DE· patent location history
1985–1992Based in Kelkheim, DE· patent location history
1997Patents assigned to MANNESMANN AG (2)· patent assignee history
1997Based in Butthard, DE· patent location history
1999Patents assigned to SIEMENS AG (1)· patent assignee history
1999Based in Rottenbach, DE· patent location history
2009Patents assigned to INTELLIGENDT SYSTEMS & SERVISE (1)· patent assignee history
2009Based in Röttenbach, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HOECHST AG | 3 | 1977–1992 |
| MANNESMANN AG | 2 | 1997 |
| INTELLIGENDT SYSTEMS & SERVISE | 1 | 2009 |
| SIEMENS AG | 1 | 1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Butthard, DE | 2 | 1997 |
| Kelkheim, DE | 2 | 1985–1992 |
| Röttenbach, DE | 1 | 2009 |
| Rottenbach, DE | 1 | 1999 |
| Hofheim, DE | 1 | 1977 |