Inventor

YOKOYAMA MASAMI

JP3 patents

⚠️ This page may combine multiple inventors who share the name “YOKOYAMA MASAMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NAKAJIMA TOSHITAKA

2 patents

US9519087B2Dec 13, 2016

Prismatic retroreflective sheeting with reduced retroreflectivity of infra-red light

NAKAJIMA TOSHITAKA8 citations78

US9110235B2Aug 18, 2015

Retroreflective sheeting and license plate with reduced retroreflectivity at high entrance angles

NAKAJIMA TOSHITAKA3 citations57

MINNESOTA MINING & MFG

1 patent

US5714223AFeb 3, 1998

Retroreflective sheet and article having retroreflectiveness

MINNESOTA MINING & MFG46 citations89