Risto Castren

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Lahti, FI

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Patents Grantslast 30 patents

Information Patent Grant
Air conditioning device
- Patent number 8,512,113
- Issue date Aug 20, 2013
- Retermia Oy
- Markus Castrén
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Method and apparatus for forming a finned heat exchanger tube that...
- Patent number 8,132,326
- Issue date Mar 13, 2012
- Retermia Oy
- Risto Castrén
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Supply air terminal unit
- Patent number 8,096,144
- Issue date Jan 17, 2012
- Retermia Oy
- Markus Castrén
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Apparatus for manufacturing a needle-rib heat-exchanger construction
- Patent number 5,781,987
- Issue date Jul 21, 1998
- Retermia Oy
- Risto Castren
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Apparatus for bending a heat-exchanger tube
- Patent number 5,669,261
- Issue date Sep 23, 1997
- Retermia Oy
- Risto Castren
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Air Conditioning Device
- Publication number 20100136896
- Publication date Jun 3, 2010
- RETERMIA OY
- Markus Castren
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Application
Equipment and Method for Making a Needle-Fin Tube, and a Needle-Fin...
- Publication number 20090056131
- Publication date Mar 5, 2009
- RETERMIA OY
- Risto Castren
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Supply Air Terminal Unit
- Publication number 20080196433
- Publication date Aug 21, 2008
- RETERMIA OY
- Markus Castren
- F24 - HEATING RANGES VENTILATING