Inventor · disambiguated record
Christopher P. Henderson
Also filed as: HENDERSON CHRISTOPHER · HENDERSON CHRISTOPHER P
58 granted patents·13 pending applications·2,034 citations·filing 1996–2025
99Inventor score
Files with3M INNOVATIVE PROPERTIES CO483M INNOVATIVE PROPERTIES COMPANY15CURRAN DESMOND T2HENDERSON CHRISTOPHER P2BOSTOCK GRAHAM J1
Top patents by PatentIndex Score
71 records- 0199US7069930B2Flat-folded personal respiratory protection devices and processes for preparing same3M INNOVATIVE PROPERTIES CO·Filed 2005·Granted Jul 4, 2006·60 cites·32 claims
- 0299US6484722B2Flat-folded personal respiratory protection devices and processes for preparing same3M INNOVATIVE PROPERTIES CO·Filed 2001·Granted Nov 26, 2002·125 cites·39 claims
- 0398US5724677AMulti-part headband and respirator mask assembly and process for making sameMINNESOTA MINING & MFG·Filed 1996·Granted Mar 10, 1998·148 cites·19 claims
- 0497US11213080B2Shape retaining flat-fold respirator3M INNOVATIVE PROPERTIES CO·Filed 2016·Granted Jan 4, 2022·16 cites·20 claims
- 0597US6123077AFlat-folded personal respiratory protection devices and processes for preparing same3M INNOVATIVE PROPERTIES CO·Filed 1996·Granted Sep 26, 2000·196 cites·17 claims
- 0696US10827787B2Maintenance-free respirator that has concave portions on opposing sides of mask top section3M INNOVATIVE PROPERTIES CO·Filed 2017·Granted Nov 10, 2020·17 cites·20 claims
- 0796US6886563B2Flat-folded personal respiratory protection devices and processes for preparing same3M INNOVATIVE PROPERTIES CO·Filed 2004·Granted May 3, 2005·78 cites·17 claims
- 0896US6568392B1Flat-folded personal respiratory protection devices and processes for preparing same3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted May 27, 2003·91 cites·34 claims
- 0996USD431647SPersonal respiratory protection device having an exhalation valve3M INNOVATIVE PROPERTIES CO·Filed 1996·Granted Oct 3, 2000·64 cites·1 claims
- 1095US6584976B2Face mask that has a filtered exhalation valve3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Jul 1, 2003·166 cites·147 claims
- 1195US6536434B1Flat-folded personal respiratory protection devices and processes for preparing same3M INNOVATIVE PROPERTIES CO·Filed 2000·Granted Mar 25, 2003·63 cites·34 claims
- 1295USD424688SRespiratory protection mask3M INNOVATIVE PROPERTIES CO·Filed 1997·Granted May 9, 2000·54 cites·1 claims
- 1394US9770611B2Maintenance-free anti-fog respiratorFACER JOHN M·Filed 2007·Granted Sep 26, 2017·41 cites·19 claims
- 1494US8342180B2Filtering face-piece respirator that has expandable mask body3M INNOVATIVE PROPERTIES CO·Filed 2008·Granted Jan 1, 2013·42 cites·23 claims
- 1594USD620104SPersonal respiratory protection device3M INNOVATIVE PROPERTIES CO·Filed 1996·Granted Jul 20, 2010·39 cites·1 claims
- 1694US6722366B2Method of making a flat-folded personal respiratory protection device3M INNOVATIVE PROPERTIES CO·Filed 2003·Granted Apr 20, 2004·49 cites·40 claims
- 1794US6715489B2Processes for preparing flat-folded personal respiratory protection devices3M INNOVATIVE PROPERTIES CO·Filed 2002·Granted Apr 6, 2004·53 cites·41 claims
- 1894US6148817AMulti-part headband and respirator mask assembly and process for making same3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Nov 21, 2000·94 cites·31 claims
- 1992USD416323SBond pattern for a personal respiratory protection device3M INNOVATIVE PROPERTIES CO·Filed 1997·Granted Nov 9, 1999·44 cites·1 claims
- 2091US12186598B2Respirator tab3M INNOVATIVE PROPERTIES COMPANY·Filed 2022·Granted Jan 7, 2025·1 cites·16 claims
- 2190USD926988SChin tab3M INNOVATIVE PROPERTIES CO·Filed 2021·Granted Aug 3, 2021·10 cites·1 claims
- 2290USD837970SMask3M INNOVATIVE PROPERTIES CO·Filed 2016·Granted Jan 8, 2019·48 cites·1 claims
- 2390US6874499B2Filter element that has a thermo-formed housing around filter material3M INNOVATIVE PROPERTIES CO·Filed 2002·Granted Apr 5, 2005·54 cites·22 claims
- 2490USD459471SPersonal respiratory protection device that has a three panelled look3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted Jun 25, 2002·29 cites·1 claims
- 2590USD458364SPersonal respiratory protection device that has left and right tabs3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted Jun 4, 2002·29 cites·1 claims
- 2689US10441828B2Powered air-purifying respirator3M INNOVATIVE PROPERTIES CO·Filed 2016·Granted Oct 15, 2019·8 cites·11 claims
- 2789US8375950B2Flat-folded personal respiratory protection devices and processes for preparing same3M INNOVATIVE PROPERTIES CO·Filed 2006·Granted Feb 19, 2013·15 cites·25 claims
- 2887US8146594B2Flat-folded personal respiratory protection devicesBOSTOCK GRAHAM J·Filed 2009·Granted Apr 3, 2012·16 cites·20 claims
- 2986US6286144B1Protective garments incorporating bands of welded or adhesively-bonded elastomeric material3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Sep 11, 2001·64 cites·21 claims
- 3084USD449377STabs on a personal respiratory protection device3M INNOVATIVE PROPERTIES CO·Filed 2000·Granted Oct 16, 2001·32 cites·1 claims
- 3183US12233292B2Anti-fog respirator3M INNOVATIVE PROPERTIES COMPANY·Filed 2023·Granted Feb 25, 2025·0 cites·20 claims
- 3283US11413481B2Respirator tab3M INNOVATIVE PROPERTIES CO·Filed 2016·Granted Aug 16, 2022·3 cites·19 claims
- 3382US6805124B2Face mask that has a filtered exhalation valve3M INNOVATIVE PROPERTIES CO·Filed 2002·Granted Oct 19, 2004·32 cites·72 claims
- 3482US6070579AElastomeric composite headband3M INNOVATIVE PROPERTIES CO·Filed 1996·Granted Jun 6, 2000·66 cites·41 claims
- 3581US12245648B2Maintenance-free respirator that has concave portions on opposing sides of mask top section3M INNOVATIVE PROPERTIES COMPANY·Filed 2023·Granted Mar 11, 2025·0 cites·8 claims
- 3681US11247079B2Personal respiratory protection device3M INNOVATIVE PROPERTIES CO·Filed 2014·Granted Feb 15, 2022·5 cites·19 claims
- 3778US11904191B2Anti-fog respirator3M INNOVATIVE PROPERTIES COMPANY·Filed 2021·Granted Feb 20, 2024·0 cites·22 claims
- 3878US11534632B2Fit-test method for respirator with sensing system3M INNOVATIVE PROPERTIES COMPANY·Filed 2018·Granted Dec 27, 2022·1 cites·18 claims
- 3978US7104264B2Rigid air ducting for respirator hoods and helmets3M INNOVATIVE PROPERTIES CO·Filed 2004·Granted Sep 12, 2006·24 cites·45 claims
- 4077US10639506B2Personal respiratory protection device3M INNOVATIVE PROPERTIES CO·Filed 2014·Granted May 5, 2020·3 cites·23 claims
- 4176US11748983B2Image-based personal protective equipment fit system using worker-specific fit test image data3M INNOVATIVE PROPERTIES COMPANY·Filed 2019·Granted Sep 5, 2023·3 cites·12 claims
- 4276US7454800B2Anatomically fitted respiratory component belt3M INNOVATIVE PROPERTIES CO·Filed 2003·Granted Nov 25, 2008·23 cites·40 claims
- 4376US2022370837A1Powered exhaust apparatus for a personal protection respiratory device3M INNOVATIVE PROPERTIES COMPANY·Filed 2022·Application pending·0 cites
- 4474US6099670AUltrasonic bonding method3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Aug 8, 2000·31 cites·19 claims
- 4573US12434082B2Personal respiratory protection device3M INNOVATIVE PROPERTIES COMPANY·Filed 2022·Granted Oct 7, 2025·0 cites·6 claims
- 4672US7077128B2Eye-wear articles for use with respiratory masks3M INNOVATIVE PROPERTIES CO·Filed 2003·Granted Jul 18, 2006·19 cites·44 claims
- 4771USD708734SRespiratory maskCURRAN DESMOND T·Filed 2007·Granted Jul 8, 2014·18 cites·1 claims
- 4871US8104472B2Non-elastomeric respirator mask that has deformable cheek portionsHENDERSON CHRISTOPHER P·Filed 2004·Granted Jan 31, 2012·18 cites·33 claims
- 4970US11877604B2Maintenance-free respirator that has concave portions on opposing sides of mask top section3M INNOVATIVE PROPERTIES COMPANY·Filed 2020·Granted Jan 23, 2024·0 cites·59 claims
- 5070USD914216SNose tab3M INNOVATIVE PROPERTIES CO·Filed 2018·Granted Mar 23, 2021·8 cites·1 claims
Showing the top 50 of 71 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →