Inventor
Rainer Spehr
Inventor
Ober-Ramstadt, DE
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Jprimary
H01JElectric discharge tubes or discharge lamps100%
PatentTitleYear
6,414,319'Electron optical lens system with a slot-shaped aperture cross section'20025,808,309'Apparatus for generating an electron beam'19985,061,856'Corpuscular beam device'19914,794,306'Flat picture-reproducing device'19884,713,543'Scanning particle microscope'19874,675,524'Scanning particle microscope with diminished boersch effect'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987Patents assigned to SIEMENS AG (2)· patent assignee history
1987–2002Based in Ober-Ramstadt, DE· patent location history
1988Patents assigned to STANDARD ELEKTRIK LORENZ AG (1)· patent assignee history
1991Patents assigned to INTEGRATED CIRCUIT TESTING (1)· patent assignee history
1998Patents assigned to ACT ADVANCED CIRCUIT TESTING (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SIEMENS AG | 2 | 1987 |
| ACT ADVANCED CIRCUIT TESTING | 1 | 1998 |
| INTEGRATED CIRCUIT TESTING | 1 | 1991 |
| STANDARD ELEKTRIK LORENZ AG | 1 | 1988 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ober-Ramstadt, DE | 6 | 1987–2002 |