Inventor · disambiguated record
William A. Mittelstadt
Also filed as: MITTELSTADT WILLIAM A
50 granted patents·2 pending applications·1,928 citations·filing 1989–2024
99Inventor score
Files with3M INNOVATIVE PROPERTIES CO343M INNOVATIVE PROPERTIES COMPANY5MINNESOTA MINING & MFG5MITTELSTADT WILLIAM A3UNITED STATES SURGICAL CORP2
Top patents by PatentIndex Score
52 records- 0199US7302951B2Unidirectional respirator valve3M INNOVATIVE PROPERTIES CO·Filed 2005·Granted Dec 4, 2007·74 cites·19 claims
- 0297US6732733B1Half-mask respirator with head harness assembly3M INNOVATIVE PROPERTIES CO·Filed 2000·Granted May 11, 2004·127 cites·36 claims
- 0397USD353668SPneumoneedleMINNESOTA MINING & MFG·Filed 1993·Granted Dec 20, 1994·107 cites·1 claims
- 0495US6298498B1Protective helmet system3M INNOVATIVE PROPERTIES CO·Filed 2000·Granted Oct 9, 2001·90 cites·5 claims
- 0592US9510626B2Sleeve-fit respirator cartridge3M INNOVATIVE PROPERTIES CO·Filed 2013·Granted Dec 6, 2016·14 cites·16 claims
- 0692US6102033AAttachment system for replacement helmet respirator lens3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Aug 15, 2000·116 cites·23 claims
- 0789US12128259B2Respirator negative pressure fit check devices and methods3M INNOVATIVE PROPERTIES COMPANY·Filed 2021·Granted Oct 29, 2024·1 cites·17 claims
- 0888US9517367B2Respiratory mask having a clean air inlet chamber3M INNOVATIVE PROPERTIES CO·Filed 2013·Granted Dec 13, 2016·12 cites·17 claims
- 0988USD471627SRespirator facemask assembly3M INNOVATIVE PROPERTIES CO·Filed 2001·Granted Mar 11, 2003·35 cites·1 claims
- 1087US10391338B2Sleeve-fit respirator cartridge3M INNOVATIVE PROPERTIES CO·Filed 2016·Granted Aug 27, 2019·5 cites·21 claims
- 1187US8717244B2RFID tag with a modified dipole antennaJOYCE JR TERRENCE H·Filed 2007·Granted May 6, 2014·27 cites·25 claims
- 1287US6883518B2Unidirectional respirator valve3M INNOVATIVE PROPERTIES CO·Filed 2001·Granted Apr 26, 2005·121 cites·35 claims
- 1387US6035451AProtective helmet system with cam for attaching first and second face shields thereto3M INNOVATIVE PROPERTIES CO·Filed 1998·Granted Mar 14, 2000·84 cites·22 claims
- 1487US2025050141A1Respirator negative pressure fit check devices and methods3M INNOVATIVE PROPERTIES COMPANY·Filed 2024·Application pending·0 cites
- 1586US5626585ALigating clip advanceUNITED STATES SURGICAL CORP·Filed 1994·Granted May 6, 1997·349 cites·18 claims
- 1685US2024091573A1Respirator fit check sealing devices and methods3M INNOVATIVE PROPERTIES COMPANY·Filed 2023·Application pending·0 cites
- 1783US9149669B2Respiratory protection device harness assembly3M INNOVATIVE PROPERTIES CO·Filed 2013·Granted Oct 6, 2015·9 cites·24 claims
- 1883US7849856B2Respirator valve3M INNOVATIVE PROPERTIES CO·Filed 2001·Granted Dec 14, 2010·26 cites·43 claims
- 1983USD467656SRespirator facemask3M INNOVATIVE PROPERTIES CO·Filed 2001·Granted Dec 24, 2002·28 cites·1 claims
- 2083US5720281AEye shield for a respiratory maskMINNESOTA MINING & MFG·Filed 1996·Granted Feb 24, 1998·67 cites·12 claims
- 2181US11052268B2Respirator negative pressure fit check devices and methods3M INNOVATIVE PROPERTIES CO·Filed 2014·Granted Jul 6, 2021·5 cites·25 claims
- 2281US7320722B2Respiratory protection device that has rapid threaded clean air source attachment3M INNOVATIVE PROPERTIES CO·Filed 2004·Granted Jan 22, 2008·29 cites·16 claims
- 2380US11865375B2Respirator fit check sealing devices and methods3M INNOVATIVE PROPERTIES COMPANY·Filed 2021·Granted Jan 9, 2024·0 cites·19 claims
- 2479US10143864B2Respirator having noncircular centroid-mounted exhalation valve3M INNOVATIVE PROPERTIES CO·Filed 2014·Granted Dec 4, 2018·3 cites·18 claims
- 2577US8839785B2Respirator harness having collapsible head cradleCASTIGLIONE DAVID M·Filed 2010·Granted Sep 23, 2014·11 cites·23 claims
- 2676US5689833AEye shield for a respiratory maskMINNESOTA MINING & MFG·Filed 1995·Granted Nov 25, 1997·50 cites·5 claims
- 2774US11305134B2Respirator having noncircular centroid-mounted exhalation valve3M INNOVATIVE PROPERTIES CO·Filed 2018·Granted Apr 19, 2022·1 cites·20 claims
- 2874US9247788B2Personal protective equipment strap retaining devices3M INNOVATIVE PROPERTIES CO·Filed 2013·Granted Feb 2, 2016·4 cites·26 claims
- 2973US9950202B2Respirator negative pressure fit check devices and methods3M INNOVATIVE PROPERTIES CO·Filed 2013·Granted Apr 24, 2018·6 cites·34 claims
- 3073US9776023B2Respiratory mask having a nose support extension3M INNOVATIVE PROPERTIES CO·Filed 2013·Granted Oct 3, 2017·1 cites·18 claims
- 3173US5562655ASurgical apparatus having a universal handle for actuating various attachmentsUNITED STATES SURGICAL CORP·Filed 1994·Granted Oct 8, 1996·163 cites·36 claims
- 3268US6279570B1Filter support, assembly and system3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted Aug 28, 2001·35 cites·14 claims
- 3368US5011187ABinding system for connected fan folded sheetsMINNESOTA MINING & MFG·Filed 1989·Granted Apr 30, 1991·31 cites·17 claims
- 3464US11992078B2Headwear suspension attachment element3M INNOVATIVE PROPERTIES COMPANY·Filed 2017·Granted May 28, 2024·2 cites·15 claims
- 3562USD787659SRespirator with face seal flexing region3M INNOVATIVE PROPERTIES CO·Filed 2013·Granted May 23, 2017·11 cites·1 claims
- 3662US5306284ASurgical instrumentAGEE JOHN·Filed 1992·Granted Apr 26, 1994·126 cites·63 claims
- 3761US9259058B2Personal protective equipment strap retaining devices3M INNOVATIVE PROPERTIES CO·Filed 2013·Granted Feb 16, 2016·1 cites·26 claims
- 3860USD776258SRespirator with face seal multiple flexing region3M INNOVATIVE PROPERTIES CO·Filed 2013·Granted Jan 10, 2017·10 cites·1 claims
- 3959USD779674SFilter element having a connector3M INNOVATIVE PROPERTIES CO·Filed 2015·Granted Feb 21, 2017·9 cites·1 claims
- 4059US5374252ALocking pneumoneedleMINNESOTA MINING & MFG·Filed 1994·Granted Dec 20, 1994·86 cites·30 claims
- 4158US11219787B2Respirator fit check sealing devices and methods3M INNOVATIVE PROPERTIES CO·Filed 2017·Granted Jan 11, 2022·0 cites·13 claims
- 4258USD652507SRespirator mask bodyMITTELSTADT WILLIAM A·Filed 2010·Granted Jan 17, 2012·12 cites·1 claims
- 4357USD787660SRespirator mask having a face seal flexing region3M INNOVATIVE PROPERTIES CO·Filed 2014·Granted May 23, 2017·9 cites·1 claims
- 4455USD655404SRespirator mask bodyMITTELSTADT WILLIAM A·Filed 2010·Granted Mar 6, 2012·9 cites·1 claims
- 4550USD759807SRespirator mask exhalation port3M INNOVATIVE PROPERTIES CO·Filed 2014·Granted Jun 21, 2016·6 cites·1 claims
- 4648USD444218SPortion of a filter support3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted Jun 26, 2001·6 cites·1 claims
- 4741USD690415SRespirator support structureMITTELSTADT WILLIAM A·Filed 2012·Granted Sep 24, 2013·4 cites·1 claims
- 4840USD740932SRespirator with raised face seal flexing region3M INNOVATIVE PROPERTIES CO·Filed 2013·Granted Oct 13, 2015·3 cites·1 claims
- 4935USD742504SRespirator mask3M INNOVATIVE PROPERTIES CO·Filed 2015·Granted Nov 3, 2015·1 cites·1 claims
- 5034USD767116SRespirator mask having an exhalation port3M INNOVATIVE PROPERTIES CO·Filed 2015·Granted Sep 20, 2016·1 cites·1 claims
Showing the top 50 of 52 patent records by PatentIndex Score.
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