Invention Grant
- Patent Title: Microspheres having a high index of refraction
- Patent Title (中): 具有高折射率的微球
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Application No.: US11044681Application Date: 2005-01-27
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Publication No.: US07524779B2Publication Date: 2009-04-28
- Inventor: Matthew H. Frey , Billy J. Frederick, Jr. , Terrance L. Bescup
- Applicant: Matthew H. Frey , Billy J. Frederick, Jr. , Terrance L. Bescup
- 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 Carolyn A. Fischer
- Main IPC: C03C12/02
- IPC: C03C12/02 ; C03C12/00 ; C03C10/00 ; C03C10/02 ; C09D1/00 ; C09D4/00 ; C09D5/00 ; C09D11/00 ; C09K3/00
Abstract:
The present invention relates to microspheres (i.e., beads) having a high index of refraction. The invention also relates to retroreflective articles, and in particular pavement markings, comprising such microspheres.
Public/Granted literature
- US20050143248A1 Microspheres having a high index of refraction Public/Granted day:2005-06-30
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