Inventor
SCHMANSKI DONALD W
US25 patents
⚠️ This page may combine multiple inventors who share the name “SCHMANSKI DONALD W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CARSONITE INT CORP
9 patentsUS5438171AAug 1, 1995
Composite sound wall
CARSONITE INT CORP55 citations96
US5272284ADec 21, 1993
Sound barrier
CARSONITE INT CORP108 citations96
US4511281AApr 16, 1985
Road-surface mountable delineator support member
CARSONITE INT CORP59 citations96
US5217771AJun 8, 1993
Sound barrier
CARSONITE INT CORP60 citations94
US5290833AMar 1, 1994
Aggregate of asphalt and filler
CARSONITE INT CORP21 citations92
US4571118AFeb 18, 1986
Simulated tubular highway safety device
CARSONITE INT CORP54 citations92
US4605204AAug 12, 1986
Collapsible recreational fence
CARSONITE INT CORP34 citations86
US4674432AJun 23, 1987
Traffic barricade
CARSONITE INT CORP11 citations74
US4516069AMay 7, 1985
Electrolysis test station terminal and support
CARSONITE INT CORP17 citations74
SCHMANSKI DONALD W
7 patentsUS4715743ADec 29, 1987
Mobility guide tile for visually handicapped
SCHMANSKI DONALD W251 citations98
US5015119AMay 14, 1991
Vision blocking barrier
SCHMANSKI DONALD W83 citations96
US4338041AJul 6, 1982
Glarefoil assembly
SCHMANSKI DONALD W55 citations96
US4061435ADec 6, 1977
Roadway delineator
SCHMANSKI DONALD W51 citations95
US4997307AMar 5, 1991
Removable snow pole insert
SCHMANSKI DONALD W8 citations73
US4342168AAug 3, 1982
Flexible street sign blank
SCHMANSKI DONALD W19 citations73
US4357001ANov 2, 1982
Method and apparatus for making fences
SCHMANSKI DONALD W17 citations72