Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers

Invention Grant

US10758420B2 Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers 有权

Patent Title: Protective headgear comprising a curved switchable shutter and comprising multiple antireflective layers
Application No.: US16096939

Application Date: 2017-05-08
Publication No.: US10758420B2

Publication Date: 2020-09-01
Inventor: Kristina M. Magnusson , Kenneth Jarefors , Britton G. Billingsley
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Applicant Address: US MN St. Paul
Assignee: 3M Innovative Properties Company
Current Assignee: 3M Innovative Properties Company
Current Assignee Address: US MN St. Paul
Agent Kenneth B. Wood
International Application: PCT/US2017/031545 WO 20170508
International Announcement: WO2017/196721 WO 20171116
Main IPC: G02B5/28
IPC: G02B5/28 ; A61F9/06 ; G02B5/20 ; G02B1/11 ; A61F9/04

Abstract:

Protective headgear with a curved switchable shutter and curved front and rear cover plates and including at least two antireflective layers.

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