Inventor · disambiguated record
John A. Hoffnagle
Also filed as: HOFFNAGLE JOHN · HOFFNAGLE JOHN A · HOFFNAGLE JOHN ALLEN
18 granted patents·3 pending applications·421 citations·filing 1992–2025
95Inventor score
Top patents by PatentIndex Score
21 records- 0196US9267880B1Ring-down binning in FSR hopping modePICARRO INC·Filed 2015·Granted Feb 23, 2016·11 cites·14 claims
- 0296US8982352B1Regular, stable optical frequency scale for cavity enhanced optical spectroscopyPICARRO INC·Filed 2013·Granted Mar 17, 2015·28 cites·22 claims
- 0395US7079223B2Fast model-based optical proximity correctionIBM·Filed 2004·Granted Jul 18, 2006·86 cites·24 claims
- 0490US5248883AIon traps of mono- or multi-planar geometry and planar ion trap devicesIBM·Filed 1992·Granted Sep 28, 1993·66 cites·34 claims
- 0588US6801368B2System for converting optical beams to collimated flat-top beamsIBM·Filed 2003·Granted Oct 5, 2004·39 cites·24 claims
- 0686US9645077B2Spectroscopic quantification of extremely rare molecular species in the presence of interfering optical absorptionL LIVERMORE NAT SECURITY LLC·Filed 2015·Granted May 9, 2017·5 cites·18 claims
- 0784US7179571B2Apparatus for characterization of photoresist resolution, and method of useIBM·Filed 2006·Granted Feb 20, 2007·6 cites·21 claims
- 0884US6654183B2System for converting optical beams to collimated flat-top beamsIBM·Filed 2001·Granted Nov 25, 2003·29 cites·31 claims
- 0984US6295168B1Refractive optical system that converts a laser beam to a collimated flat-top beamIBM·Filed 1999·Granted Sep 25, 2001·71 cites·15 claims
- 1078US2025207975A1Cavity Enhanced Absorption Spectroscopy using a piecewise tunable laser and hierarchical wavelength determinationPICARRO INC·Filed 2025·Application pending·0 cites
- 1176US12270706B2Cavity enhanced absorption spectroscopy using a piecewise tunable laser and hierarchical wavelength determinationPICARRO INC·Filed 2021·Granted Apr 8, 2025·0 cites·5 claims
- 1276US7046342B2Apparatus for characterization of photoresist resolution, and method of useIBM·Filed 2004·Granted May 16, 2006·12 cites·32 claims
- 1373US11092493B2Cavity enhanced absorption spectroscopy using a piecewise tunable laser and hierarchical wavelength determinationPICARRO INC·Filed 2019·Granted Aug 17, 2021·0 cites·12 claims
- 1472US6178000B1Monolithic symmetric interferometer for generation of variable-periodicity patterns for lithographyIBM·Filed 1998·Granted Jan 23, 2001·33 cites·32 claims
- 1569US7875408B2Bleachable materials for lithographyIBM·Filed 2007·Granted Jan 25, 2011·3 cites·26 claims
- 1665US5379000AAtomic clock employing ion trap of mono- or multi-planar geometryIBM·Filed 1992·Granted Jan 3, 1995·26 cites·4 claims
- 1762US11592388B2Clutter avoidance in wide-band cavity ring-down data acquisitionPICARRO INC·Filed 2019·Granted Feb 28, 2023·0 cites·18 claims
- 1858US6879448B2Apparatus for achromatizing optical beamsIBM·Filed 2003·Granted Apr 12, 2005·6 cites·38 claims
- 1952US2025137921A1Per-frequency correction of spectroscopic interferencePICARRO INC·Filed 2023·Application pending·0 cites
- 2050US11035728B2Cavity ring-down spectroscopy having interleaved data acquisition for interference mitigationPICARRO INC·Filed 2019·Granted Jun 15, 2021·0 cites·15 claims
- 2140US2012215456A1System and method for cellular optical wavefront sensingHOFFNAGLE JOHN·Filed 2011·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →