Inventor
Bernhard Rothkegel
Inventor
Nuremberg, DE
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Hprimary
H01HElectric switches38%
B22FWorking metallic powder21%
B30BPresses in general8%
C22CAlloys8%
Y10TTechnical subjects covered by former us classification8%
B24CAbrasive or related blasting with particulate material4%
H01BCables4%
H01JElectric discharge tubes or discharge lamps4%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h104%
PatentTitleYear
5,246,480'Sintered contact material based on silver for use in power engineering switch-gear, in particular for contact pieces in low-voltage switches'19934,980,125'Sinter contact material for low voltage switching apparatus of the energy technology, in particular for motor contactors'19904,855,104'Method for the production of sintered electrical contact material for low voltage power switching'19894,764,227'Sintered electrical contact material for low voltage power switching'19884,681,702'Sintered, electrical contact material for low voltage power switching'19874,671,889'Molded getter bodies and method of producing the same'19874,609,525'Cadmium-free silver and metal oxide composite useful for electrical contacts and a method for its manufacture'19864,543,223'Method for the dry molding of formed parts'19854,362,494'Automatic press'19824,185,968'Method for generating a solderable surface on a contact piece of silver and finely distributed graphite particles'19804,153,755'Impregnated sintered material for electrical contacts and method for its production'19794,008,520'Contact member and method of manufacture'19773,954,459'Method for making sintered silver-metal oxide electric contact material'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1993Patents assigned to SIEMENS AG (12)· patent assignee history
1976–1977Based in Nurnberg, DE· patent location history
1979–1993Based in Nuremberg, DE· patent location history
1987Patents assigned to ESTERL ROBERT (1)· patent assignee history
1987Patents assigned to ROTHKEGEL BERNHARD (1)· patent assignee history
1987Patents assigned to SCHREINER HORST (1)· patent assignee history
1987Patents assigned to WEISER JOSEF (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SIEMENS AG | 12 | 1976–1993 |
| ESTERL ROBERT | 1 | 1987 |
| ROTHKEGEL BERNHARDself | 1 | 1987 |
| SCHREINER HORST | 1 | 1987 |
| WEISER JOSEF | 1 | 1987 |
Locations
| Location | Patents | Span |
|---|---|---|
| Nuremberg, DE | 11 | 1979–1993 |
| Nurnberg, DE | 2 | 1976–1977 |