Inventor · disambiguated record
Hans W. Hafner
Also filed as: HAEFNER HANS · HAEFNER HANS W · HAEFNER HANS WILHELM · HAFNER HANS
57 granted patents·1,090 citations·filing 1977–2005
99Inventor score
Top patents by PatentIndex Score
57 records- 0197US4528848ADevice for the continuous gravimetric metering and pneumatic conveyance of pourable materialPFISTER GMBH·Filed 1983·Granted Jul 16, 1985·91 cites·23 claims
- 0293US4864874AForce measuring devicePFISTER GMBH·Filed 1988·Granted Sep 12, 1989·39 cites·4 claims
- 0389US4213509AHydrostatic setting apparatus for support of loadsPFISTER GMBH·Filed 1978·Granted Jul 22, 1980·39 cites·4 claims
- 0488US5670751ABulk material weighing container with pressure feedbackPFISTER GMBH·Filed 1994·Granted Sep 23, 1997·51 cites·16 claims
- 0587US5167385AAircraft and system and method for operating thereofPFISTER GMBH·Filed 1989·Granted Dec 1, 1992·53 cites·9 claims
- 0687US4984468APressure sensor and method for manufacturing itPFISTER GMBH·Filed 1990·Granted Jan 15, 1991·45 cites·19 claims
- 0781US5149121AForce measuring devicePFISTER GBMH·Filed 1990·Granted Sep 22, 1992·49 cites·16 claims
- 0876US4661024AMethod and apparatus for continuous gravimetric metering and feeding of pourable materialPFISTER GMBH·Filed 1985·Granted Apr 28, 1987·28 cites·19 claims
- 0974US5209121APressure sensorPFISTER MESSTECHNIK·Filed 1991·Granted May 11, 1993·34 cites·3 claims
- 1073US4739666AFlat-spread force measuring devicePFISTER GMBH·Filed 1986·Granted Apr 26, 1988·34 cites·28 claims
- 1172US4711127AMethod and apparatus for measuring the pressure of a fluidPFISTER GMBH·Filed 1986·Granted Dec 8, 1987·24 cites·31 claims
- 1271US6964550B2Chain conveyor in the form of scalesPFISTER GMBH·Filed 2002·Granted Nov 15, 2005·18 cites·10 claims
- 1369US7226248B2Device for the continuous gravimetric metering and pneumatic conveying of pourable materialPFISTER GMBH·Filed 2003·Granted Jun 5, 2007·14 cites·10 claims
- 1468US5325716AApparatus for determining the pressure distribution along a limited distance and method for manufacturing itPFISTER MESSTECHNIK·Filed 1992·Granted Jul 5, 1994·36 cites·17 claims
- 1568US5255427ACeramic hollow bodies and method of manufacturing such bodiesPFISTER GMBH·Filed 1991·Granted Oct 26, 1993·29 cites·10 claims
- 1667US6545231B1Chain conveyorPFISTER GMBH·Filed 1999·Granted Apr 8, 2003·28 cites·30 claims
- 1766US4913457AMethod and apparatus for optimizing the driving characteristics of a vehiclePFISTER GMBH·Filed 1988·Granted Apr 3, 1990·32 cites·24 claims
- 1866US4644805AForce measuring devicePFISTER GMBH·Filed 1984·Granted Feb 24, 1987·19 cites·15 claims
- 1965US4843873AMethod and apparatus for determining moments acting upon an object under measurementPFISTER GMBH·Filed 1988·Granted Jul 4, 1989·26 cites·28 claims
- 2064US5291795ATransmission element for force or moment measuring devicesPFISTER MESSTECHNIK·Filed 1991·Granted Mar 8, 1994·24 cites·13 claims
- 2164US4770050AForce or pressure measuring devicePFISTER GMBH·Filed 1986·Granted Sep 13, 1988·23 cites·20 claims
- 2263US4827240AForce measuring devicePFISTER GMBH·Filed 1987·Granted May 2, 1989·20 cites·28 claims
- 2360US5289724AGravimetric metering apparatus for pourable materialsPFISTER GMBH·Filed 1992·Granted Mar 1, 1994·17 cites·19 claims
- 2460US5205368AApparatus and method for weighing rail-supported vehiclesPFISTER MESSTECHNIK·Filed 1991·Granted Apr 27, 1993·18 cites·17 claims
- 2559US5579944AMulti-layer gasket for an aerosol containerPRECISION VALVE CORP·Filed 1994·Granted Dec 3, 1996·25 cites·40 claims
- 2658US5455395APipe chain conveyorPFISTER GMBH·Filed 1993·Granted Oct 3, 1995·15 cites·23 claims
- 2758US4848478AMethod and apparatus for calibrating and/or checking of load cellsPFISTER GMBH·Filed 1987·Granted Jul 18, 1989·14 cites·18 claims
- 2857US7479606B2Gravimetric metering device with independently suspended rotating impeller bladesPFISTER GMBH·Filed 2005·Granted Jan 20, 2009·2 cites·10 claims
- 2953US5184892ASystem and method for continuous gravimetric metering, pneumatic conveying and/or mixing of pourable materialsPFISTER GMBH·Filed 1991·Granted Feb 9, 1993·14 cites·19 claims
- 3053US4541285AMethod and apparatus for measuring the pressure of a liquidPFISTER GMBH·Filed 1984·Granted Sep 17, 1985·12 cites·11 claims
- 3153US4112752AApparatus for measuring several force componentsPFISTER WAAGEN GMBH·Filed 1977·Granted Sep 12, 1978·15 cites·11 claims
- 3252US4682915AMethod and apparatus for continuous gravimetric metering and pneumatic feeding of pourable materialPFISTER GMBH·Filed 1985·Granted Jul 28, 1987·11 cites·28 claims
- 3349US4965729AMethod and apparatus for improving the operational characteristics of a vehiclePFISTER GMBH·Filed 1988·Granted Oct 23, 1990·14 cites·19 claims
- 3449US4832140APlatform weighing apparatus and method for producing thereofPFISTER GMBH·Filed 1988·Granted May 23, 1989·9 cites·44 claims
- 3548US7581659B2Dosing devicePFISTER GMBH·Filed 2002·Granted Sep 1, 2009·3 cites·10 claims
- 3647US5255830AGravimetric metering apparatus for pourable material and conveying system using itPFISTER GMBH·Filed 1991·Granted Oct 26, 1993·10 cites·18 claims
- 3747US4830399AElastic connection between at least two rigid partsPFISTER GMBH·Filed 1986·Granted May 16, 1989·14 cites·26 claims
- 3847US4646943AApparatus for continuous gravimetric metering and feeding of pourable materialPFISTER GMBH·Filed 1984·Granted Mar 3, 1987·8 cites·16 claims
- 3946US4522074AApparatus for measuring several force componentsPFISTER GMBH·Filed 1982·Granted Jun 11, 1985·9 cites·10 claims
- 4045US5060525AResilient connecting device, in particular with incorporated force-measuring device and process for manufacturing itPFISTER GMBH·Filed 1989·Granted Oct 29, 1991·13 cites·21 claims
- 4145US4750577AWeighing apparatusPFISTER GMBH·Filed 1986·Granted Jun 14, 1988·8 cites·22 claims
- 4245US4466297ADevice for measuring a forcePFISTER GMBH·Filed 1983·Granted Aug 21, 1984·8 cites·18 claims
- 4344US6041664AMethod and apparatus for continuous, gravimetric metering and mass flow determination of flowable materialsPFISTER GMBH·Filed 1995·Granted Mar 28, 2000·11 cites·15 claims
- 4444US4754653AForce measuring devicePFISTER GMBH·Filed 1985·Granted Jul 5, 1988·14 cites·14 claims
- 4543US5394747AApparatus for continuous gravimetric metering of a pourable materialPFISTER GMBH·Filed 1992·Granted Mar 7, 1995·9 cites·12 claims
- 4641US5359900AApparatus for measuring the mass throughput of a flow of pourable material according to the coriolis principlePFISTER GMBH·Filed 1992·Granted Nov 1, 1994·9 cites·25 claims
- 4740US5353960AGravimetric metering apparatus for pourable materialsPFISTER GMBH·Filed 1991·Granted Oct 11, 1994·7 cites·8 claims
- 4839US6254104B1Gasket for an aerosol valve stemPRECISION VALVE CORP·Filed 1999·Granted Jul 3, 2001·10 cites·14 claims
- 4938US4700566ADevice for dividing vector forces into their componentsPFISTER GMBH·Filed 1986·Granted Oct 20, 1987·7 cites·14 claims
- 5037US5497669AForce measuring devicePFISTER MESSTECHNIK·Filed 1993·Granted Mar 12, 1996·7 cites·18 claims
Showing the top 50 of 57 patent records by PatentIndex Score.
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