Inventor
CAMPBELL MICHAEL C
US23 patents
⚠️ This page may combine multiple inventors who share the name “CAMPBELL MICHAEL C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
(unassigned)
9 patentsUS6422273B1Jul 23, 2002
Evacuation system filter
20 citations92
US5992475ANov 30, 1999
Aerosol-container evacuating system
20 citations92
US6644515B1Nov 11, 2003
Filter-valve assembly
14 citations84
US6428410B1Aug 6, 2002
Venturi ventilation system
15 citations84
US5826447AOct 27, 1998
Procedure for handling materials in drums and bung-plug apparatus and method therefor
19 citations84
US5657800AAug 19, 1997
Gas tank evacuator
19 citations84
US5469898ANov 28, 1995
Gas tank evacuator
15 citations82
US5421380AJun 6, 1995
Gas tank evacuator
18 citations82
US5529097AJun 25, 1996
Gas tank evacuator
17 citations73
JUSTRITE MFG COMPANY LLC
5 patentsUS9845232B2Dec 19, 2017
Puncturing device for aerosol containers
JUSTRITE MFG COMPANY LLC6 citations78
US9827528B2Nov 28, 2017
Filter for a propellant gas evacuation system
JUSTRITE MFG COMPANY LLC2 citations72
USD798918SOct 3, 2017
Shield for puncturing device
JUSTRITE MFG COMPANY LLC2 citations72
US9993764B2Jun 12, 2018
Filter for a propellant gas evacuation system
JUSTRITE MFG COMPANY LLC1 citations51
US10618791B2Apr 14, 2020
Puncturing device for aerosol containers
JUSTRITE MFG COMPANY LLC0 citations46
LEXMARK INT INC
4 patentsUS7585043B2Sep 8, 2009
Method of authenticating a consumable
LEXMARK INT INC17 citations92
US7240995B2Jul 10, 2007
Method of authenticating a consumable
LEXMARK INT INC23 citations92
US6871926B2Mar 29, 2005
Method of estimating an amount of available ink contained in an ink reservoir
LEXMARK INT INC42 citations91
US7798594B2Sep 21, 2010
Method of authenticating a consumable
LEXMARK INT INC13 citations83