Inventor
STEFFEN JAMES E
US21 patents
⚠️ This page may combine multiple inventors who share the name “STEFFEN JAMES E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MINNESOTA MINING & MFG
11 patentsUS5656368AAug 12, 1997
Fibrous filtration face mask having corrugated polymeric microfiber filter layer
MINNESOTA MINING & MFG152 citations99
US5620545AApr 15, 1997
Method of making a corrugated nonwoven web of polymeric microfiber
MINNESOTA MINING & MFG118 citations99
US5804295ASep 8, 1998
Fibrous filtration face mask having corrugated polymeric microfiber filter layer
MINNESOTA MINING & MFG91 citations97
US5763078AJun 9, 1998
Filter having corrugated nonwoven webs of polymeric microfiber
MINNESOTA MINING & MFG83 citations97
US5830311ANov 3, 1998
Corrugating apparatus
MINNESOTA MINING & MFG25 citations96
US5753343AMay 19, 1998
Corrugated nonwoven webs of polymeric microfiber
MINNESOTA MINING & MFG50 citations95
US5440146AAug 8, 1995
Radiographic image reader
MINNESOTA MINING & MFG53 citations92
USD347298SMay 24, 1994
Valve cover
MINNESOTA MINING & MFG31 citations92
US4997034AMar 5, 1991
Heat exchanger
MINNESOTA MINING & MFG49 citations89
US5639700AJun 17, 1997
Thermal insulation containing corrugated nonwoven web of polymeric microfiber
MINNESOTA MINING & MFG16 citations81
US5955193ASep 21, 1999
Apparel containing corrugated microfiber-containing thermal insulation
MINNESOTA MINING & MFG7 citations73