1
Roger H Appeldorn, John C Nelson, Mark E Gardiner, Timothy L Hoopman: Cube-corner retroreflective articles having tailored divergence profiles. Minnesota Mining & Manufacturing Company, Donald M Sell, Roger R Tamte, October 4, 1988: US04775219 (232 worldwide citation)

Cube-corner retroreflective article having improved divergence profiles. The three lateral reflecting faces of the cube-corner retroreflective elements are formed by three intersecting sets of parallel V-shaped grooves, and at least one of the sets includes, in a repeating pattern, at least two groo ...


2
Theodore J Szczech: Retroreflective material with improved angularity. Minnesota Mining and Manufacturing Company, Douglas B Little, Gary L Griswold, Walter N Kirn, August 11, 1992: US05138488 (154 worldwide citation)

The present invention provides an improved cube-corner retroreflective article that exhibits a wide range of retroreflective angularity in multiple viewing planes. The present invention provides cube-corner retroreflective elements having a decreased size, as measured by the height of the cube corne ...


3
Kenneth L Smith, Tzu Li J Huang, James C Coderre: Flexible cube-corner retroreflective sheeting. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Karl G Hanson, September 12, 1995: US05450235 (153 worldwide citation)

A retroreflective article 10 has a body portion 14 and a multitude of cube-comer elements 12 that project from a rear side 20 of the body portion 14. The body portion 14 includes a body layer 18 that contains a light-transmissible polymeric material having an elastic modulus less than 7.times.10.sup ...


4
Tzu Li J Huang, Walton J Hammar, James C Coderre, Mirian D Nave: Retroreflective article. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, David B Kagan, May 26, 1992: US05117304 (130 worldwide citation)

The present invention provides improved, flexible retroreflective articles based upon an optically clear, aliphatic polyurethane polymer. The aliphatic polymer has a plurality of hard chain segments of the formula


5
Robert J Fleming, Joseph M McGrath, Christopher S Lyons: Retroreflective articles having polymer multilayer reflective coatings. 3M Innovative Properties Company, Robert J Pechman, Karl G Hanson, January 9, 2001: US06172810 (79 worldwide citation)

A retroreflective article that has a layer of optical elements and a multilayer reflective coating disposed on the optical elements. The reflective coating reflects light back into the optical elements so that it can be returned toward the light source. The multilayer reflective coating has multiple ...


6
James C Coderre: Cube-corner retroreflective articles. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Karl G Hanson, December 21, 1993: US05272562 (75 worldwide citation)

A retroreflective article (30, 50) has opaque pigment particles (38, 58) dispersed in a retroreflective region (33, 53) of a front portion (35, 55) of a sheeting (32, 52) that includes a body portion (34, 54) and a multitude of cube-corner elements (36, 56). The opaque pigment particles (38, 58) sca ...


7
Kenneth L Smith, Gerald M Benson: Tiled retroreflective sheeting composed of highly canted cube corner elements. Minnesota Mining & Manufacturing Company, Stephen C Jensen, April 27, 1999: US05898523 (69 worldwide citation)

A retroreflective sheeting includes a first array of cube corner element opposing pairs and a second array of cube corner element opposing pairs. The symmetry axes of the cube corner elements in the first and second arrays are tilted in a backward direction at an angle of about 12.degree. to about 3 ...


8
Cheryl M Frey, Olester Benson Jr, Joseph R Zwack, Paul E Marecki, Jeanine M Shusta, Matthew R Atkinson: Formed ultra-flexible retroreflective cube-corner composite sheeting with target optical properties and method for making same. Minnesota Mining and Manufacturing Company, Karl G Schwappach, Karl G Hanson, June 9, 1998: US05763049 (55 worldwide citation)

A retroreflective sheeting having a multiplicity of discrete, cube-corner elements cured in situ on a transparent, polymeric overlay film deformed into a three-dimensional structure so that base edges of a plurality of cube-corner elements are non-planar with respect to one another. The retroreflect ...


9
Soonkun Kang, John L Ethen, Gregory E Gilligan, Christopher J Gustafson, Tzu Li Joseph Huang, Sithya Seda Khieu, Kanta Kumar, Thomas W Rambosek: Retroreflective articles including a cured ceramer composite coating having a combination of excellent abrasion, dew and stain resistant characteristics. 3M Innovatives Properties Company, Doreen S L Gwin, October 17, 2000: US06132861 (48 worldwide citation)

A retroreflective article comprising a substrate and a cured ceramer coating provided on at least a portion of a surface of the substrate. The coated portion of the surface is retroreflective. The coating comprises a cured ceramer composite derived from ingredients comprising a free radically curabl ...


10
Gerald M Benson, Kenneth L Smith, John C Kelliher, Mark E Gardiner: Raised structure retroreflective article. Minnesota Mining & Manufacturing Company, Jed W Caven, Stephen C Jensen, August 31, 1999: US05946134 (46 worldwide citation)

A cube corner article and method of manufacturing the article from a series of directly machinable unitary substrates. The method of manufacture comprises the first step of providing an initial unitary directly machinable substrate of material suitable for forming retroreflective surfaces. Then, a f ...