Gerrit J. Koel

Person

Eindhoven, NL

People

Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing an optical fiber preform
- Patent number 4,793,843
- Issue date Dec 27, 1988
- U.S. Philips Corporation
- Rene A. M. Pluijms
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Method of manufacturing optical fibres
- Patent number 4,493,721
- Issue date Jan 15, 1985
- U.S. Philips Corporation
- Cornelis P. Auwerda
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Device for generating magnetic bubbles with a high bit rate
- Patent number 4,453,232
- Issue date Jun 5, 1984
- U.S. Philips Corporation
- Gerrit J. Koel
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin-film magnetic head for reading and writing information
- Patent number 4,300,177
- Issue date Nov 10, 1981
- U.S. Philips Corporation
- Gerrit J. Koel
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of manufacturing a thin-film magnetic head with a nickel-iro...
- Patent number 4,239,587
- Issue date Dec 16, 1980
- U.S. Philips Corporation
- Gerrit J. Koel
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of manufacturing a magnetic head by photo-etching
- Patent number 4,224,400
- Issue date Sep 23, 1980
- U.S. Philips Corporation
- Gerrit J. Koel
- G11 - INFORMATION STORAGE
Information Patent Grant
Forming electrically insulating layers by sputter deposition
- Patent number 4,176,016
- Issue date Nov 27, 1979
- U.S. Philips Corporation
- Gerrit J. Koel
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of reinforcing a conductive base pattern by electroplating a...
- Patent number 4,175,010
- Issue date Nov 20, 1979
- U.S. Philips Corporation
- Gerrit J. Koel
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Magnetic head having a core provided on a substrate by means of thi...
- Patent number 4,165,525
- Issue date Aug 21, 1979
- U.S. Philips Corporation
- Gerrit J. Koel
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head using a magnetic field-sensitive element and method o...
- Patent number 4,151,574
- Issue date Apr 24, 1979
- U.S. Philips Corporation
- Jan Gerkema
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin-film magnetic head for reading and writing information
- Patent number 4,150,408
- Issue date Apr 17, 1979
- U.S. Philips Corporation
- Gerrit J. Koel
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin-film magnetic head for reading and writing information
- Patent number 4,100,583
- Issue date Jul 11, 1978
- U.S. Philips Corporation
- Gerrit J. Koel
- G11 - INFORMATION STORAGE
Information Patent Grant
Device for the magnetic recording by means of a magnetic strip doma...
- Patent number 4,091,429
- Issue date May 23, 1978
- U.S. Philips Corporation
- Frederik Ate de Jonge
- G11 - INFORMATION STORAGE

Gerrit J. Koel

Person

Patents Grantslast 30 patents

Method of manufacturing an optical fiber preform

Method of manufacturing optical fibres

Device for generating magnetic bubbles with a high bit rate

Thin-film magnetic head for reading and writing information

Method of manufacturing a thin-film magnetic head with a nickel-iro...

Method of manufacturing a magnetic head by photo-etching

Forming electrically insulating layers by sputter deposition

Method of reinforcing a conductive base pattern by electroplating a...

Magnetic head having a core provided on a substrate by means of thi...

Magnetic head using a magnetic field-sensitive element and method o...

Thin-film magnetic head for reading and writing information

Thin-film magnetic head for reading and writing information

Device for the magnetic recording by means of a magnetic strip doma...