Robert Yaw Gyamfi Andoh

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Mitcham, GB

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Patents Grantslast 30 patents

Information Patent Grant
Vortex valve
- Patent number 7,814,935
- Issue date Oct 19, 2010
- Hydro International PLC
- Robert Y. G. Andoh
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Overflow chamber
- Patent number 7,094,337
- Issue date Aug 22, 2006
- Hydro International PLC
- Christopher A. Williams
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Hydrodynamic vortex separator
- Patent number 6,730,222
- Issue date May 4, 2004
- Hydro International PLC
- Robert Yaw Gyamfi Andoh
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Vortex valves
- Patent number 6,374,858
- Issue date Apr 23, 2002
- Hydro International PLC
- Stephen Peter Hides
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Separator with solids diverter
- Patent number 6,187,178
- Issue date Feb 13, 2001
- Hydro International PLC
- Paul Jeremy Lecornu
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
VORTEX VALVE
- Publication number 20080017819
- Publication date Jan 24, 2008
- Robert Y.G. ANDOH
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Hydrodynamic treatment device
- Publication number 20070108122
- Publication date May 17, 2007
- Robert Yam Gyamfi Andoh
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Coupling
- Publication number 20050205146
- Publication date Sep 22, 2005
- Robert Y.G. Andoh
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Overflow chamber
- Publication number 20050045541
- Publication date Mar 3, 2005
- Christopher A Williams
- E03 - WATER SUPPLY SEWERAGE