公开(公告)号：US20240421477A1

公开(公告)日：2024-12-19

申请号：US18717909

申请日：2022-12-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jaewon Kim ,  Raymond P. Johnston ,  John J. Sullivan ,  Shawn T. Brovold ,  Matthew C. Messina ,  Charles D. Hoyle ,  Kenneth L. Smith ,  Dipankar Ghosh ,  Zhonghua Lu ,  Robert A. Sainati

IPC: H01Q3/26 ,  H01Q17/00

Abstract: Radar retroreflective (R3) devices including an electromagnetic absorber are provided. The electromagnetic absorber is disposed on selected areas of the device to reduce specular reflection without substantially reducing retroreflection of the device.

公开(公告)号：US20220206196A1

公开(公告)日：2022-06-30

申请号：US17606901

申请日：2020-05-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Shawn T. Brovold ,  Susannah C. Clear ,  Jonathan D. Gandrud ,  Justin M. Johnson

IPC: G02B5/124 ,  G02B5/128 ,  B60Q1/26 ,  G02B5/132

Abstract: The present disclosure is directed to retroreflective articles to increase visibility of a vehicle, wherein the retroreflective article comprises one or more retroreflective markings arranged in a given pattern and at least a portion of the article has a curvature.