Ahti Kemppi

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Jarvela, FI

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Patents Grantslast 30 patents

Information Patent Grant
Storage battery
- Patent number 5,128,221
- Issue date Jul 7, 1992
- Neste Oy
- Toivo Karn/a
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Procedure for producing an envelope structure for a storage battery
- Patent number 4,989,837
- Issue date Feb 5, 1991
- Neste Oy
- Toivo Karna
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Gas vault structure for a storage battery
- Patent number 4,973,533
- Issue date Nov 27, 1990
- Neste Oy
- Jukka-Pekka Nieminen
- H01 - BASIC ELECTRIC ELEMENTS