Altti Torkkeli

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing a membrane sensor
- Patent number 6,901,804
- Issue date Jun 7, 2005
- Nokia Corporation
- Altti Torkkeli
- B81 - MICRO-STRUCTURAL TECHNOLOGY
Information Patent Grant
Optically black surface for producing the same
- Patent number 6,177,673
- Issue date Jan 23, 2001
- Valtion teknillinen Tutkimuskeskus
- Martti Juhani Blomberg
- G02 - OPTICS
Information Patent Grant
Electrically modulatable thermal radiant source with specific filament
- Patent number 5,827,438
- Issue date Oct 27, 1998
- Vaisala Oy
- Martti Blomberg
- G01 - MEASURING TESTING
Information Patent Grant
Miniaturized fabry-perot spectrometer for optical analysis
- Patent number 5,818,586
- Issue date Oct 6, 1998
- Valtion Teknillinen Tutkimuskeskus
- Ari Lehto
- G01 - MEASURING TESTING
Information Patent Grant
Single-channel gas concentration measurement method and apparatus u...
- Patent number 5,646,729
- Issue date Jul 8, 1997
- Vaisala Oy
- Yrjo Koskinen
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Method of manufacturing a membrane sensor
- Publication number 20030094047
- Publication date May 22, 2003
- Altti Torkkeli
- B81 - MICRO-STRUCTURAL TECHNOLOGY