Petrus J. A. M. Derks

Person

Eindhoven, NL

People

Patents Grantslast 30 patents

Information Patent Grant
Oxide cathode with rare earth addition
- Patent number 5,347,194
- Issue date Sep 13, 1994
- U.S. Philips Corporation
- Petrus J. A. M. Derks
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode for an electric discharge tube
- Patent number 5,277,637
- Issue date Jan 11, 1994
- U.S. Philips Corporation
- Petrus J. A. M. Derks
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Alkaline earth metal oxide cathode containing rare earth metal oxide
- Patent number 5,146,131
- Issue date Sep 8, 1992
- U.S. Philips Corporation
- Petrus J. A. M. Derks
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Oxide cathode
- Patent number 5,075,589
- Issue date Dec 24, 1991
- U.S. Philips Corporation
- Petrus J. A. M. Derks
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Oxide cathode
- Patent number 5,059,856
- Issue date Oct 22, 1991
- U.S. Philips Corp.
- Petrus J. A. M. Derks
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode for an electric discharge tube
- Patent number 5,030,879
- Issue date Jul 9, 1991
- U.S. Philips Corporation
- Petrus J. A. M. Derks
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Camera tube with graded tellurium or arsenic target
- Patent number 4,348,610
- Issue date Sep 7, 1982
- U.S. Philips Corporation
- Jan Dieleman
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Camera tube selenium target including arsenic increasing in concent...
- Patent number 4,319,159
- Issue date Mar 9, 1982
- U.S. Philips Corporation
- Petrus J. A. M. Derks
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Camera tube with graduated concentration of tellurium in target
- Patent number 4,254,359
- Issue date Mar 3, 1981
- U.S. Philips Corporation
- Petrus J. A. M. Derks
- H01 - BASIC ELECTRIC ELEMENTS

Petrus J. A. M. Derks

Person

Patents Grantslast 30 patents

Oxide cathode with rare earth addition

Cathode for an electric discharge tube

Alkaline earth metal oxide cathode containing rare earth metal oxide

Oxide cathode

Oxide cathode

Cathode for an electric discharge tube

Camera tube with graded tellurium or arsenic target

Camera tube selenium target including arsenic increasing in concent...

Camera tube with graduated concentration of tellurium in target