Philip D. Eitzman — 18 Patents at 3M

Philip D. Eitzman has been granted 18 US patents while listed as an inventor at 3M. The first was granted in 1995 and the most recent in August 2024. Philip D. Eitzman ranks #245,716 of 4,157,543 US inventors in our database (top 5.9%). Patent records list Philip D. Eitzman in Lake Elmo, MN, US.

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12070634	Exhalation valve and respirator including same	Thomas J. Xue	2024-08-27	$83,203,000
12017175	Pleated air filter with bridging filaments and continuous-contact filaments	Zhiqun Zhang, Nhat Ha T. Nguyen, Jimmy M. Le, Glen O. Gregerson, Bryan L. Gerhardt	2024-06-25	$28,642,000
D900306	Valve cover	Thomas J. Xue	2020-10-27
D882758	Valve cover	Thomas J. Xue	2020-04-28
D849245	Valve cover	Thomas J. Xue	2019-05-21
D843562	Valve cover with diamond pattern	Thomas J. Xue	2019-03-19
D842983	Valve cover	Thomas J. Xue	2019-03-12
D828546	Valve cover with openings	Thomas J. Xue	2018-09-11
D827812	Valve cover with openings	Thomas J. Xue	2018-09-04
D827811	Valve cover	Thomas J. Xue	2018-09-04
D704824	Respirator having folded nose region	Dean R. Duffy	2014-05-13
6824718	Process of making a fibrous electret web	Alan D. Rousseau	2004-11-30	$16,086,000
6454986	Method of making a fibrous electret web using a nonaqueous polar liquid	Alan D. Rousseau, Marvin E. Jones, Seyed A. Angadjivand	2002-09-24	$15,327,000
6406657	Method and apparatus for making a fibrous electret web using a wetting liquid and an aqueous polar liquid	Alan D. Rousseau	2002-06-18	$13,155,000
6375886	Method and apparatus for making a nonwoven fibrous electret web from free-fiber and polar liquid	Seyed A. Angadjivand, Michael G. Schwartz, Marvin E. Jones	2002-04-23	$14,963,000
5614105	Cartridge filters with insoluble enzyme particulates contained thereon	Steven M. Heilmann, Gary J. Drtina, Louis C. Haddad, Frederick W. Hyde, Todd W. Johnson	1997-03-25	$18,008,000
5478466	Cartridge filters with insoluble enzyme particulates contained thereon	Steven M. Heilmann, Gary J. Drtina, Louis C. Haddad, Frederick W. Hyde, Todd W. Johnson	1995-12-26	$15,673,000
5468847	Method of isolating and purifying a biomacromolecule	Steven M. Heilmann, Gary J. Drtina, Louis C. Haddad, Frederick W. Hyde, Todd W. Johnson +2 more	1995-11-21	$5,722,000

Philip D. Eitzman — 18 Patents

Issued Patents All Time

Patent Widget