Duffy; Dean R.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Duffy; Dean R..The latest application filed is for "respirator including adjustable strap and method of forming same".

Company Profile

3.51.47

Duffy; Dean R. - Woodbury MN

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Respirator Including Adjustable Strap And Method Of Forming Same App 20220047015 - Duffy; Dean R.	2022-02-17
Flat-fold Respirator Having Flanges Disposed On The Mask Body App 20210331008 - Duffy; Dean R. ; et al.	2021-10-28
Filtering face-piece respirator having folded flange Grant 11,116,998 - Duffy September 14, 2	2021-09-14
Flat fold respirator having flanges disposed on the mask body Grant 11,083,916 - Duffy , et al. August 10, 2	2021-08-10
Foldable Face-Piece Respirator With Exhalation Valve App 20210038928 - Vasiliev; Evgeny V. ; et al.	2021-02-11
Respirator Including Transversely-Extending Pleat And Method Of Forming Same App 20200390167 - Duffy; Dean R.	2020-12-17
Filtering face-piece respirator having nose cushioning member Grant 10,602,785 - Duffy	2020-03-31
Respirator including contrast layer Grant 10,576,314 - Duffy	2020-03-03
Molded Respirator with Integral Nose Pads Provided by Inwardly-Folded Tabs App 20190090558 - Xu; Feng ; et al.	2019-03-28
Filtering face-piece respirator having darted mask body Grant 10,238,158 - Duffy	2019-03-26
Filtering face-piece respirator having strap-activated folded flange Grant 10,182,603 - Duffy Ja	2019-01-22
Foldable Face-Piece Respirator With Exhalation Valve App 20180353782 - Vasiliev; Evgeny V. ; et al.	2018-12-13
Filtering face-piece respirator having nose notch Grant 10,136,687 - Duffy November 27, 2	2018-11-27
Filtering face-piece respirator dispenser Grant 10,040,621 - Duffy , et al. August 7, 2	2018-08-07
Respirator That Has Inward Nose Region Fold With High Level Conformation App 20180169447 - Eitzman; Philip D. ; et al.	2018-06-21
Respirator Including Contrast Layer App 20180099165 - Duffy; Dean R.	2018-04-12
Respirator including contrast layer Grant 9,868,002 - Duffy January 16, 2	2018-01-16
Horizontal flat-fold filtering face-piece respirator having indicia of symmetry Grant 9,826,786 - Duffy November 28, 2	2017-11-28
Filtering Face-Piece Respirator Having Nose Cushioning Member App 20170318876 - Duffy; Dean R.	2017-11-09
Filtering face-piece respirator having nose cushioning member Grant 9,770,057 - Duffy September 26, 2	2017-09-26
Filtering face-piece respirator with stiffening member integral with filtering structure Grant 9,615,612 - Duffy April 11, 2	2017-04-11
Filter frame assembly with seal Grant 9,610,528 - Porbeni , et al. April 4, 2	2017-04-04
Filtering face-piece respirator having nose notch Grant 9,603,396 - Duffy March 28, 2	2017-03-28
Filtering face-piece respirator having darted mask body Grant 9,603,395 - Duffy March 28, 2	2017-03-28
Filtering Face-Piece Respirator With Increased Friction Perimeter App 20170014653 - Duffy; Dean R.	2017-01-19
Filtering Face-Piece Respirator Having Darted Mask Body App 20160338428 - Duffy; Dean R.	2016-11-24
Filtering Face-Piece Respirator Having Nose Notch App 20160287916 - Duffy; Dean R.	2016-10-06
Respirator Including Contrast Layer App 20160016021 - Duffy; Dean R.	2016-01-21
Filtering Face-Piece Respirator Dispenser App 20150266655 - Duffy; Dean R. ; et al.	2015-09-24
Expandable face mask with reinforcing netting Grant 9,012,013 - Duffy April 21, 2	2015-04-21
Filtering Face-Piece Respirator With Increased Friction Perimeter App 20150101617 - Duffy; Dean R.	2015-04-16
Filter Frame Assembly With Seal App 20150075125 - Porbeni; Francis E. ; et al.	2015-03-19
Filtering Face-piece Respirator Having Nose Notch App 20150059774 - Duffy; Dean R.	2015-03-05
Filtering Face-piece Respirator Having Nose Cushioning Member App 20150059773 - Duffy; Dean R.	2015-03-05
Filtering Face-piece Respirator Having Darted Mask Body App 20150059772 - Duffy; Dean R.	2015-03-05
Filtering Face-piece Respirator With Stiffening Member Integral With Filtering Structure App 20150059771 - Duffy; Dean R.	2015-03-05
Horizontal Flat-Fold Filtering Face-Piece Respirator having Indicia of Symmetry App 20150020816 - Duffy; Dean R.	2015-01-22
Horizontal flat-fold filtering face-piece respirator having indicia of symmetry Grant 8,881,729 - Duffy November 11, 2	2014-11-11
Filtering Face-piece Respirator Having Rounded Perimeter App 20140182601 - Duffy; Dean R.	2014-07-03
Filtering Face-piece Respirator Having Welded Indicia Hidden In Pleat App 20140182600 - Duffy; Dean R.	2014-07-03
Filtering Face-piece Respirator Having Folded Flange App 20140182593 - Duffy; Dean R.	2014-07-03
Filtering Face-piece Respirator Having Strap-activated Folded Flange App 20140182599 - Duffy; Dean R.	2014-07-03
Respirator having folded nose region Grant D704,824 - Duffy , et al. May 13, 2	2014-05-13
Flat-fold filtering face-piece respirator having structural weld pattern Grant 8,640,704 - Spoo , et al. February 4, 2	2014-02-04
Filtering Face-piece Respirator Having Support Structure Injection Molded To Filtering Structure App 20130340768 - Gebrewold; Yonas ; et al.	2013-12-26
Respiratory mask Grant D692,125 - Duffy October 22, 2	2013-10-22
Filtering face-piece respirator having parallel line weld pattern in mask body Grant 8,528,560 - Duffy September 10, 2	2013-09-10
Joined filter media pleat packs Grant 8,491,689 - Duffy , et al. July 23, 2	2013-07-23
Self-supporting pleated filter media Grant 8,419,817 - Sundet , et al. April 16, 2	2013-04-16
Parallel bond lines on a fibrous filtration face mask Grant D678,507 - Duffy March 19, 2	2013-03-19
Expandable face mask with engageable stiffening element Grant 8,360,067 - Duffy January 29, 2	2013-01-29
Bond pattern on a personal respiratory protection mask Grant D667,541 - Spoo , et al. September 18, 2	2012-09-18
Filtering Face-piece Respirator Having Support Structure Injection Molded To Filtering Structure App 20120125342 - Gebrewold; Yonas ; et al.	2012-05-24
Filtering Face-piece Respirator Having An Overmolded Face Seal App 20120125341 - Gebrewold; Yonas ; et al.	2012-05-24
Tabs on a personal respiratory protection mask Grant D659,820 - Abel , et al. May 15, 2	2012-05-15
Triangular bond pattern on a personal respiratory protection mask Grant D659,821 - Spoo , et al. May 15, 2	2012-05-15
Expandable Face Mask With Engageable Stiffening Element App 20120047627 - Duffy; Dean R.	2012-03-01
Filter cartridge Grant D652,910 - Duffy January 24, 2	2012-01-24
Filter cartridge having a magenta netting Grant D652,506 - Huberty , et al. January 17, 2	2012-01-17
Respirator That Has Inward Nose Region Fold With High Level Conformation App 20110315144 - Eitzman; Philip D. ; et al.	2011-12-29
Expandable face mask with engageable stiffening element Grant 8,074,660 - Duffy December 13, 2	2011-12-13
Self-supporting Pleated Filter Media App 20110138760 - Sundet; Douglas C. ; et al.	2011-06-16
Filtering Face-piece Respirator Having Parallel Line Weld Pattern In Mask Body App 20110094515 - Duffy; Dean R.	2011-04-28
Flat-fold Filtering Face-piece Respirator Having Structural Weld Pattern App 20110067700 - Spoo; Scott A ; et al.	2011-03-24
Horizontal Flat-fold Filtering Face-piece Respirator Having Indicia Of Symmetry App 20110067701 - Duffy; Dean R.	2011-03-24
Self-supporting pleated filter media Grant 7,896,940 - Sundet , et al. March 1, 2	2011-03-01
Joined Filter Media Pleat Packs App 20100269463 - Duffy; Dean R. ; et al.	2010-10-28
Expandable Face Mask With Engageable Stiffening Element App 20100154804 - Duffy; Dean R.	2010-06-24
Expandable Face Mask With Reinforcing Netting App 20100154806 - Duffy; Dean R.	2010-06-24
Flat Fold Respirator Having Flanges Disposed On The Mask Body App 20100154805 - Duffy; Dean R. ; et al.	2010-06-24
Slip-rib filter gasketing Grant 7,261,757 - Duffy August 28, 2	2007-08-28
Filter cross brace Grant 7,258,717 - Duffy August 21, 2	2007-08-21
Perimeter Filter Frame Having Internal Retaining Fins App 20070144125 - Duffy; Dean R.	2007-06-28
Method of forming self-supporting pleated filter media Grant 7,235,115 - Duffy , et al. June 26, 2	2007-06-26
Slip-rib filter gasketing App 20060037296 - Duffy; Dean R.	2006-02-23
Self-supporting pleated filter media App 20060005517 - Sundet; Douglas C. ; et al.	2006-01-12
Method of forming self-supporting pleated filter media App 20060005518 - Duffy; Dean R. ; et al.	2006-01-12
Filter cross brace App 20050284116 - Duffy, Dean R.	2005-12-29
Continuous filter framing strip storable in roll form Grant 6,926,781 - Duffy August 9, 2	2005-08-09
"Push-on" self attach adaptive filter Grant 6,797,028 - Duffy September 28, 2	2004-09-28
Interconnected filter frame and filter framing method Grant 6,740,136 - Duffy May 25, 2	2004-05-25
Continuous filter framing strip storable in roll form App 20030172633 - Duffy, Dean R.	2003-09-18
"Push-on" self attach adaptive filter App 20030150196 - Duffy, Dean R.	2003-08-14
Interconnected filter frame and filter framing method App 20030070406 - Duffy, Dean R.	2003-04-17
Filter assemblies with adhesive attachment systems Grant 6,419,729 - Duffy , et al. July 16, 2	2002-07-16
Zigzag filter media and frame having triangular pleat stabilizing elements Grant 5,531,892 - Duffy July 2, 1	1996-07-02