Inventor
HOOPMAN TIMOTHY L
US30 patents
⚠️ This page may combine multiple inventors who share the name “HOOPMAN TIMOTHY L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MINNESOTA MINING & MFG
19 patentsUS5681217AOct 28, 1997
Abrasive article, a method of making same, and a method of using same for finishing
MINNESOTA MINING & MFG165 citations99
US5672097ASep 30, 1997
Abrasive article for finishing
MINNESOTA MINING & MFG437 citations99
US5300263AApr 5, 1994
Method of making a microlens array and mold
MINNESOTA MINING & MFG157 citations99
US5268782ADec 7, 1993
Micro-ridged, polymeric liquid crystal display substrate and display device
MINNESOTA MINING & MFG165 citations99
US4938563AJul 3, 1990
High efficiency cube corner retroflective material
MINNESOTA MINING & MFG232 citations99
US4775219AOct 4, 1988
Cube-corner retroreflective articles having tailored divergence profiles
MINNESOTA MINING & MFG450 citations99
US4588258AMay 13, 1986
Cube-corner retroreflective articles having wide angularity in multiple viewing planes
MINNESOTA MINING & MFG615 citations99
US6129540AOct 10, 2000
Production tool for an abrasive article and a method of making same
MINNESOTA MINING & MFG345 citations98
US5439621AAug 8, 1995
Method of making an array of variable focal length microlenses
MINNESOTA MINING & MFG118 citations98
US5317805AJun 7, 1994
Method of making microchanneled heat exchangers utilizing sacrificial cores
MINNESOTA MINING & MFG261 citations98
US5658184AAug 19, 1997
Nail tool and method of using same to file, polish and/or buff a fingernail or a toenail
MINNESOTA MINING & MFG62 citations96
US5519539AMay 21, 1996
Microlens array with microlenses having modified polygon perimeters
MINNESOTA MINING & MFG50 citations96
US5249358AOct 5, 1993
Jet impingment plate and method of making
MINNESOTA MINING & MFG66 citations95
US5070606ADec 10, 1991
Method for producing a sheet member containing at least one enclosed channel
MINNESOTA MINING & MFG66 citations95
US4871623AOct 3, 1989
Sheet-member containing a plurality of elongated enclosed electrodeposited channels and method
MINNESOTA MINING & MFG70 citations95
US5454951AOct 3, 1995
Separation-science medium support plate
MINNESOTA MINING & MFG34 citations92
USD366365SJan 23, 1996
Coated abrasive sheet article
MINNESOTA MINING & MFG10 citations74
US4839227AJun 13, 1989
Resilient electrically and thermally conductive flexible composite
MINNESOTA MINING & MFG17 citations74
USRE34651EJun 28, 1994
Sheet-member containing a plurality of elongated enclosed electrodeposited channels and method
MINNESOTA MINING & MFG5 citations62
3M INNOVATIVE PROPERTIES CO
9 patentsUS5946991ASep 7, 1999
Method for knurling a workpiece
3M INNOVATIVE PROPERTIES CO344 citations99
US6354709B1Mar 12, 2002
Optical film
3M INNOVATIVE PROPERTIES CO329 citations98
US6076248AJun 20, 2000
Method of making a master tool
3M INNOVATIVE PROPERTIES CO145 citations98
US6581286B2Jun 24, 2003
Method of making tool to produce optical film
3M INNOVATIVE PROPERTIES CO85 citations97
US5975987ANov 2, 1999
Method and apparatus for knurling a workpiece, method of molding an article with such workpiece, and such molded article
3M INNOVATIVE PROPERTIES CO345 citations97
US7510462B2Mar 31, 2009
Multi-diamond cutting tool assembly for creating microreplication tools
3M INNOVATIVE PROPERTIES CO21 citations92
US6386079B2May 14, 2002
Method and apparatus for knurling a workpiece, method of molding an article with such workpiece, and such molded article
3M INNOVATIVE PROPERTIES CO4 citations74
US6238611B1May 29, 2001
Method and apparatus for knurling a workpiece, method of molding an article with such workpiece and such molded article
3M INNOVATIVE PROPERTIES CO10 citations74
US6959575B2Nov 1, 2005
Kurling tool
3M INNOVATIVE PROPERTIES CO1 citations63