Retroreflective microprismatic material with top face curvature

Details Retroreflective microprismatic material with top face curvature Retroreflective microprismatic material with top face curvature

1996-09-23

1998-07-14

Loney, Donald

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

40612, 2244, 156242, 264 11, 264 138, 264 19, 264241, 404 9, B32B 300

Patent

active

057801401

ABSTRACT:
Retroreflective material is disclosed which is formed of an array of microprisms which reflect light more uniformly by forming a concave curvature in the base face of the prisms.

REFERENCES:
patent: 3689346 (1972-09-01), Rowland
patent: 3716445 (1973-02-01), Lemelson
patent: 4244683 (1981-01-01), Rowland
patent: 4801193 (1989-01-01), Martin
patent: 5171624 (1992-12-01), Walter
patent: 5204160 (1993-04-01), Rouser
patent: 5229882 (1993-07-01), Rowland
patent: 5300263 (1994-04-01), Houpman et al.

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