HH

Hans W. Hafner

PG Pfister Gmbh: 47 patents #1 of 15Top 7%
PG Pfister Messtechnik Gmbh: 5 patents #1 of 2Top 50%
PV Precision Valve: 2 patents #18 of 36Top 50%
📍 Meitingen, NY: #1 of 1 inventorsTop 100%
Overall (All Time): #44,824 of 4,157,543Top 2%
56
Patents All Time

Issued Patents All Time

Showing 1–25 of 56 patents

Patent #TitleCo-InventorsDate
7581659 Dosing device 2009-09-01
7479606 Gravimetric metering device with independently suspended rotating impeller blades 2009-01-20
7226248 Device for the continuous gravimetric metering and pneumatic conveying of pourable material Hubert Wolfschaffner 2007-06-05
6964550 Chain conveyor in the form of scales 2005-11-15
6545231 Chain conveyor 2003-04-08
6254104 Gasket for an aerosol valve stem 2001-07-03
6041664 Method and apparatus for continuous, gravimetric metering and mass flow determination of flowable materials 2000-03-28
5670751 Bulk material weighing container with pressure feedback 1997-09-23
5579944 Multi-layer gasket for an aerosol container Timothy O'Toole 1996-12-03
5497669 Force measuring device 1996-03-12
5455395 Pipe chain conveyor 1995-10-03
5394747 Apparatus for continuous gravimetric metering of a pourable material 1995-03-07
5359900 Apparatus for measuring the mass throughput of a flow of pourable material according to the coriolis principle 1994-11-01
5353960 Gravimetric metering apparatus for pourable materials 1994-10-11
5325716 Apparatus for determining the pressure distribution along a limited distance and method for manufacturing it Gerhard Altmayer 1994-07-05
5301555 Method and apparatus for measuring the mass throughput of a flow of material according to the coriolis principle 1994-04-12
5291795 Transmission element for force or moment measuring devices 1994-03-08
5289724 Gravimetric metering apparatus for pourable materials 1994-03-01
5255427 Ceramic hollow bodies and method of manufacturing such bodies 1993-10-26
5255830 Gravimetric metering apparatus for pourable material and conveying system using it 1993-10-26
5209121 Pressure sensor 1993-05-11
5205368 Apparatus and method for weighing rail-supported vehicles 1993-04-27
5184892 System and method for continuous gravimetric metering, pneumatic conveying and/or mixing of pourable materials 1993-02-09
5167385 Aircraft and system and method for operating thereof 1992-12-01
5149121 Force measuring device 1992-09-22