Invention Grant
- Patent Title: Security device
- Patent Title (中): 安全设备
-
Application No.: US13263618Application Date: 2010-04-13
-
Publication No.: US09411074B2Publication Date: 2016-08-09
- Inventor: Robert Whiteman , Christopher John Eastell
- Applicant: Robert Whiteman , Christopher John Eastell
- Applicant Address: GB Hampshire
- Assignee: DE LA RUE INTERNATIONAL LIMITED
- Current Assignee: DE LA RUE INTERNATIONAL LIMITED
- Current Assignee Address: GB Hampshire
- Agency: Oliff PLC
- Priority: GB0906366.0 20090414
- International Application: PCT/GB2010/000746 WO 20100413
- International Announcement: WO2010/119247 WO 20101021
- Main IPC: B42D25/364
- IPC: B42D25/364 ; B42D25/324 ; G02B1/00 ; B42D25/29
Abstract:
A security device is disclosed having a region of piezochromic material and an integrated relief structure. The security device is arranged such that when a stress is generated in the piezochromic material and relief structure, an optical effect is generated in the piezochromic material.
Public/Granted literature
- US20120139230A1 SECURITY DEVICE Public/Granted day:2012-06-07
Information query
