S.T. Ritvanen Oy

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Raisio, FI

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Patents Grantslast 30 patents

Information Patent Grant
Method for finely feeding granular solids into liquid
- Patent number 10,010,836
- Issue date Jul 3, 2018
- S.T. RITVANEN OY
- Tapio Ritvanen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method and apparatus for collecting surface layer of liquid
- Patent number 9,896,815
- Issue date Feb 20, 2018
- S.T. RITVANEN OY
- Tapio Ritvanen
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR COLLECTING SURFACE LAYER OF LIQUID
- Publication number 20160122965
- Publication date May 5, 2016
- S.T. Ritvanen Oy
- Tapio RITVANEN
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Application
METHOD FOR FINELY FEEDING GRANULAR SOLIDS INTO LIQUID
- Publication number 20150133035
- Publication date May 14, 2015
- S.T. Ritvanen Oy
- Tapio Ritvanen
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Trademarklast 30 trademarks