Patent · US Active

Optical articles and systems interacting with the same

US11373076B2 · kind B2 · utility

4Cited by

58References

17Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Michael A. McCoy · Battle Ground, US
Anne C. Gold · South St. Paul, US
Silvia Geciova-Borovova Guttmann · Okabena, US
Glenn E. Casner · Woodbury, US
Timothy J. Gardner · Windom, US
Steven H. Kong · Woodbury, US
Gautam Singh · Woodbury, US
Jonathan T. Kahl · Woodbury, US
Nathan J. Anderson · Woodbury, US
Catherine L. Aune · Hammond, US
Caroline M. Ylitalo · Stillwater, US
Britton G. Billingsley · Windom, US
Muhammad J. Afridi · Woodbury, US
Kui Chen-Ho · Woodbury, US
Travis L. Potts · Woodbury, US
Robert W. Shannon · Stillwater, US
Guruprasad Somasundaram · Minneapolis, US

Key dates

Filing date	Sep 27, 2017
Grant date	Jun 28, 2022
Priority date	—
Expiry date	Sep 27, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG06K2019/0629
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Optical articles including a spatially defined arrangement of a plurality of data rich retroreflective elements, wherein the plurality of retroreflective elements comprise retroreflective elements having at least two different retroreflective properties and at least two different optical contrasts with respect to a background substrate when observed within an ultraviolet spectrum, a visible spectrum, a near-infrared spectrum, or a combination thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.