Invention Grant
- Patent Title: Method of making retrochromic beads and kit thereof
- Patent Title (中): 制造回变珠的方法及其试剂盒
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Application No.: US10122527Application Date: 2002-04-11
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Publication No.: US06978896B2Publication Date: 2005-12-27
- Inventor: Kenton D. Budd , Matthew H. Frey
- Applicant: Kenton D. Budd , Matthew H. Frey
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Main IPC: G02B5/126
- IPC: G02B5/126 ; G02B5/128 ; B65D85/00
Abstract:
The present invention provides a method of making a plurality of intrinsically retrochromic beads. The present invention further provides a kit comprising intrinsically retrochromic beads having different retroreflective colors.
Public/Granted literature
- US20030194490A1 Method of making retrochromic beads and kit thereof Public/Granted day:2003-10-16
Information query
