Inventor · disambiguated record
B. Mark Hirst
Also filed as: HIRST B M · HIRST B MARK
32 granted patents·5 pending applications·1,917 citations·filing 1994–2012
98Inventor score
Top patents by PatentIndex Score
37 records- 0199US5491540AReplacement part with integral memory for usage and calibration dataHEWLETT PACKARD CO·Filed 1994·Granted Feb 13, 1996·196 cites·7 claims
- 0298US5930553AImage forming and office automation device consumable with memoryHEWLETT PACKARD CO·Filed 1997·Granted Jul 27, 1999·232 cites·10 claims
- 0398US5835817AReplaceable part with integral memory for usage, calibration and other dataHEWLETT PACKARD CO·Filed 1997·Granted Nov 10, 1998·425 cites·26 claims
- 0497US5789723AReduced flicker fusing system for use in electrophotographic printers and copiersHEWLETT PACKARD CO·Filed 1996·Granted Aug 4, 1998·108 cites·20 claims
- 0597US5699091AReplaceable part with integral memory for usage, calibration and other dataHEWLETT PACKARD CO·Filed 1996·Granted Dec 16, 1997·433 cites·21 claims
- 0692US6445902B1Simplified fusing systemHEWLETT PACKARD CO·Filed 2001·Granted Sep 3, 2002·44 cites·12 claims
- 0791US6294904B1Multiple frequency switching power supply and methods to operate a switching power supplyHEWLETT PACKARD CO·Filed 2000·Granted Sep 25, 2001·43 cites·14 claims
- 0887US6580895B2Fusing system including a heat distribution mechanismHEWLETT PACKARD DEVELOPMENT CO·Filed 2001·Granted Jun 17, 2003·28 cites·19 claims
- 0984US7187398B2Characterization of a scan line produced from a facet of a scanning deviceHEWLETT PACKARD DEVELOPMENT CO·Filed 2005·Granted Mar 6, 2007·7 cites·10 claims
- 1084US6339211B1Reducing a temperature differential in a fixing deviceHEWLETT PACKARD CO·Filed 2000·Granted Jan 15, 2002·32 cites·12 claims
- 1181US6563726B1Synchronous bridge rectifierHEWLETT PACKARD CO·Filed 2001·Granted May 13, 2003·41 cites·27 claims
- 1280US5627722ASingle high voltage supply for use in a multiple developer electrophotographic printerHEWLETT PACKARD CO·Filed 1994·Granted May 6, 1997·24 cites·11 claims
- 1376US5925278AUniversal power supply for multiple loadsHEWLETT PACKARD CO·Filed 1996·Granted Jul 20, 1999·40 cites·13 claims
- 1475US5811764AMethod for reducing flicker in electrophotographic printers and copiersHEWLETT PACKARD CO·Filed 1996·Granted Sep 22, 1998·24 cites·20 claims
- 1573US6018151APredictive fusing system for use in electrophotographic printers and copiersHEWLETT PACKARD CO·Filed 1998·Granted Jan 25, 2000·21 cites·20 claims
- 1672US7541692B2Peripheral device having a power supplyHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Jun 2, 2009·18 cites·30 claims
- 1772US6127816AMultiple frequency switching power supply and methods to operate a switching power supplyHEWLETT PACKARD CO·Filed 1999·Granted Oct 3, 2000·36 cites·20 claims
- 1868US6721530B2Fusing system having electromagnetic heatingHEWLETT PACKARD DEVELOPMENT CO·Filed 2001·Granted Apr 13, 2004·10 cites·11 claims
- 1967US6635864B2Measurement and correction of a scan line length errorHEWLETT PACKARD DEVELOPMENT CO·Filed 2001·Granted Oct 21, 2003·7 cites·21 claims
- 2067US6396724B1Charge-pumped DC bias supplyHEWLETT PACKARD CO·Filed 2001·Granted May 28, 2002·20 cites·19 claims
- 2166US6853831B2Fusing system including an external heaterHEWLETT PACKARD DEVELOPMENT CO·Filed 2001·Granted Feb 8, 2005·9 cites·11 claims
- 2266US6512913B2Fusing system including a heat storage mechanismHEWLETT PACKARD CO·Filed 2001·Granted Jan 28, 2003·9 cites·24 claims
- 2363US6014161AClosed loop compensation for gray scale printing devicesHEWLETT PACKARD CO·Filed 1997·Granted Jan 11, 2000·28 cites·20 claims
- 2461US6847016B2System and method for controlling power in an imaging deviceHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Jan 25, 2005·7 cites·21 claims
- 2559US8253394B2Snubber circuitHIRST B MARK·Filed 2004·Granted Aug 28, 2012·13 cites·28 claims
- 2659US5541458APower supply for timed residual power after turn offHEWLETT PACKARD CO·Filed 1994·Granted Jul 30, 1996·11 cites·10 claims
- 2756US6122478AReduction of thermally induced mechanical stress in a fixing deviceHEWLETT PACKARD CO·Filed 1999·Granted Sep 19, 2000·16 cites·16 claims
- 2850US6181895B1Image forming devices, image forming methods, and methods of supplying power to an image forming deviceHEWLETT PACKARD CO·Filed 1999·Granted Jan 30, 2001·16 cites·18 claims
- 2947US8664922B2Snubber circuitHIRST B MARK·Filed 2012·Granted Mar 4, 2014·0 cites·20 claims
- 3045US2003016403A1Characterization of a scan line produced from a facet of a scanning deviceFiled 2001·Application pending·0 cites
- 3145US2004103351A1Redundant data storage in imaging devicesFiled 2002·Application pending·0 cites
- 3244US6307584B1Single polygon scanner for multiple laser printerHEWLETT PACKARD CO·Filed 1999·Granted Oct 23, 2001·10 cites·21 claims
- 3342US6710309B1Use of the temperature gradient to determine the source voltageHEWLETT PACKARD DEVELOPMENT CO·Filed 1996·Granted Mar 23, 2004·9 cites·6 claims
- 3441US7180534B2Scanning assemblies, printing devices, and related methodsHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Feb 20, 2007·0 cites·51 claims
- 3540US2013083338A1Printing system with deep suspend modeFAHRENKRUG MARK A·Filed 2011·Application pending·0 cites
- 3634US2003222079A1System for inductively heating a beltFiled 2002·Application pending·0 cites
- 3734US2005162870A1Power converterFiled 2004·Application pending·0 cites
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