Inventor · disambiguated record
Philip D. Eitzman
Also filed as: EITZMAN PHILIP D
18 granted patents·5 pending applications·773 citations·filing 1994–2024
95Inventor score
Files with3M INNOVATIVE PROPERTIES CO143M INNOVATIVE PROPERTIES COMPANY4MINNESOTA MINING & MFG3DUFFY DEAN R1EITZMAN PHILIP D1
Top patents by PatentIndex Score
23 records- 0198US6406657B1Method and apparatus for making a fibrous electret web using a wetting liquid and an aqueous polar liquid3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted Jun 18, 2002·151 cites·46 claims
- 0297US6824718B2Process of making a fibrous electret web3M INNOVATIVE PROPERTIES CO·Filed 2002·Granted Nov 30, 2004·97 cites·41 claims
- 0396US6454986B1Method of making a fibrous electret web using a nonaqueous polar liquid3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted Sep 24, 2002·118 cites·40 claims
- 0496US6375886B1Method and apparatus for making a nonwoven fibrous electret web from free-fiber and polar liquid3M INNOVATIVE PROPERTIES CO·Filed 1999·Granted Apr 23, 2002·167 cites·46 claims
- 0591US5468847AMethod of isolating and purifying a biomacromoleculeMINNESOTA MINING & MFG·Filed 1994·Granted Nov 21, 1995·91 cites·30 claims
- 0681US5478466ACartridge filters with insoluble enzyme particulates contained thereonMINNESOTA MINING & MFG·Filed 1995·Granted Dec 26, 1995·45 cites·32 claims
- 0778US2024416157A1Exhalation valve and respirator including same3M INNOVATIVE PROPERTIES COMPANY·Filed 2024·Application pending·0 cites
- 0874USD843562SValve cover with diamond pattern3M INNOVATIVE PROPERTIES CO·Filed 2016·Granted Mar 19, 2019·15 cites·1 claims
- 0967USD882758SValve cover3M INNOVATIVE PROPERTIES CO·Filed 2016·Granted Apr 28, 2020·11 cites·1 claims
- 1067US5614105ACartridge filters with insoluble enzyme particulates contained thereonMINNESOTA MINING & MFG·Filed 1995·Granted Mar 25, 1997·19 cites·22 claims
- 1163USD849245SValve cover3M INNOVATIVE PROPERTIES CO·Filed 2016·Granted May 21, 2019·9 cites·1 claims
- 1263USD827811SValve cover3M INNOVATIVE PROPERTIES CO·Filed 2016·Granted Sep 4, 2018·9 cites·1 claims
- 1362USD828546SValve cover with openings3M INNOVATIVE PROPERTIES CO·Filed 2016·Granted Sep 11, 2018·9 cites·1 claims
- 1460USD842983SValve cover3M INNOVATIVE PROPERTIES CO·Filed 2016·Granted Mar 12, 2019·8 cites·1 claims
- 1559US12017175B2Pleated air filter with bridging filaments and continuous-contact filaments3M INNOVATIVE PROPERTIES COMPANY·Filed 2019·Granted Jun 25, 2024·0 cites·20 claims
- 1658USD900306SValve cover3M INNOVATIVE PROPERTIES CO·Filed 2016·Granted Oct 27, 2020·7 cites·1 claims
- 1758US2018169447A1Respirator that has inward nose region fold with high level conformation3M INNOVATIVE PROPERTIES CO·Filed 2018·Application pending·0 cites
- 1857USD827812SValve cover with openings3M INNOVATIVE PROPERTIES CO·Filed 2016·Granted Sep 4, 2018·7 cites·1 claims
- 1957USD704824SRespirator having folded nose regionDUFFY DEAN R·Filed 2010·Granted May 13, 2014·10 cites·1 claims
- 2056US12070634B2Exhalation valve and respirator including same3M INNOVATIVE PROPERTIES COMPANY·Filed 2017·Granted Aug 27, 2024·0 cites·18 claims
- 2152US2002110610A1Apparatus for making a nonwoven fibrous electret web from free-fiber and polar liquid3M INNOVATIVE PROPERTIES CO·Filed 2002·Application pending·0 cites
- 2251US2011315144A1Respirator that has inward nose region fold with high level conformationEITZMAN PHILIP D·Filed 2010·Application pending·0 cites
- 2351US2025001221A1Touch-free seal check systems and methods for respiratory protection devices3M INNOVATIVE PROPERTIES COMPANY·Filed 2022·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Philip D. Eitzman files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →