Rainer Spehr

Follow

Person

Ober-Ramstadt, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Electron optical lens system with a slot-shaped aperture cross section
- Patent number 6,414,319
- Issue date Jul 2, 2002
- Rainer Spehr
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Apparatus for generating an electron beam
- Patent number 5,808,309
- Issue date Sep 15, 1998
- ACT Advanced Circuit Testing Gesellschaft fur Testsystementwicklung mbH
- Rainer Spehr
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Corpuscular beam device
- Patent number 5,061,856
- Issue date Oct 29, 1991
- ICT Integrated Circuit Testing Gesellschaft fur Halbleiterpruftechnik mbH
- Jurgen Frosien
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Flat picture-reproducing device
- Patent number 4,794,306
- Issue date Dec 27, 1988
- Standard Elektrik Lorenz AG
- Kurt-Manfred Tischer
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Scanning particle microscope
- Patent number 4,713,543
- Issue date Dec 15, 1987
- Siemens Aktiengesellschaft
- Hans-Peter Feuerbaum
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Scanning particle microscope with diminished boersch effect
- Patent number 4,675,524
- Issue date Jun 23, 1987
- Siemens Aktiengesellschaft
- Juergen Frosien
- H01 - BASIC ELECTRIC ELEMENTS