Inventor
Franz Graf
Inventor
Karlsruhe, DE
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B03Cprimary
B03CMagnetic or electrostatic separation of solid materials from solid materials or fluids17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
C02FTreatment of water, waste water, sewage, or sludge8%
D04BKnitting8%
G01MTesting static or dynamic balance of machines or structures8%
G01RMeasuring electric variables8%
G10KSound-producing devices8%
H01FMagnets8%
H01HElectric switches8%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers8%
PatentTitleYear
7,346,448'Measuring arrangement and method to determine at intervals the usability potential of at least one operational fluid in an engine'20086,463,158'Apparatus for picking up sound waves'20025,695,646'Process for conditioning soft water to become drinking water'19975,220,800'NMR magnet system with superconducting coil in a helium bath'19935,075,520'Contact member for electrical switching devices'19915,033,275'Process for the manufacture of piled goods and warp knitting machine adapted therefor'19914,315,816'High intensity magnetic field drum separator'19824,272,365'Magnetic separator'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–1982Patents assigned to KLOECKNER HUMBOLDT DEUTZ AG (2)· patent assignee history
1981–1993Based in Karlsruhe, DE· patent location history
1991Based in Poesing, DE· patent location history
1991Based in Rodgau, DE· patent location history
1993Patents assigned to BRUKER ANALYTISCHE MESSTECHNIK (1)· patent assignee history
1993Patents assigned to KERNFORSCHUNGSZ KARLSRUHE (1)· patent assignee history
1997Based in Hadamar, DE· patent location history
2002–2008Patents assigned to AVL LIST GMBH (2)· patent assignee history
2002Patents assigned to JOANNEUM RES FORSCHUNGSGMBH (1)· patent assignee history
2002–2008Based in Graz, AT· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AVL LIST GMBH | 2 | 2002–2008 |
| KLOECKNER HUMBOLDT DEUTZ AG | 2 | 1981–1982 |
| BRUKER ANALYTISCHE MESSTECHNIK | 1 | 1993 |
| JOANNEUM RES FORSCHUNGSGMBH | 1 | 2002 |
| KERNFORSCHUNGSZ KARLSRUHE | 1 | 1993 |
Locations
| Location | Patents | Span |
|---|---|---|
| Karlsruhe, DE | 3 | 1981–1993 |
| Graz, AT | 2 | 2002–2008 |
| Hadamar, DE | 1 | 1997 |
| Poesing, DE | 1 | 1991 |
| Rodgau, DE | 1 | 1991 |