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Retroreflector
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Patent number 10,761,249
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Issue date Sep 1, 2020
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Hans-Erich Gubela
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Retroreflective elements and articles
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Patent number 7,458,693
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Issue date Dec 2, 2008
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3M Innovative Properties Company
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Rebecca A. Shipman
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Retroreflective elements and articles
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Patent number 7,413,316
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Issue date Aug 19, 2008
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3M Innovative Properties Company
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Rebecca A. Shipman
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Retroreflective elements and articles
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Patent number 7,168,815
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Issue date Jan 30, 2007
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3M Innovative Properties Company
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Rebecca A. Shipman
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Retroreflective elements
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Patent number 5,750,191
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Issue date May 12, 1998
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Minnesota Mining and Manufacturing Company
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Kathleen A. Hachey
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Lens and method of making same
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Patent number 5,657,169
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Issue date Aug 12, 1997
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DBM Reflex Enterprises Inc.
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Italo Caroli
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Retroreflective article with dual reflector
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Patent number 5,417,515
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Issue date May 23, 1995
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Minnesota Mining and Manufacturing Company
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Kathleen A. Hachey
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patterned skid preventative sheet
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Patent number 5,227,221
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Issue date Jul 13, 1993
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Minnesota Mining and Manufacturing Company
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Thomas P. Hedblom
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Process for making retroreflector sheet
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Patent number 4,988,541
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Issue date Jan 29, 1991
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Minnesota Mining and Manufacturing Company
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Thomas P. Hedblom
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Patterned pavement marking
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Patent number 4,988,555
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Issue date Jan 29, 1991
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Minnesota Mining and Manufacturing Company
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Thomas P. Hedblom
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Reflective particles
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Patent number 4,983,458
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Issue date Jan 8, 1991
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Potters Industries, Inc.
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Robert Dejaiffe
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Production of transparent globules
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Patent number 4,469,645
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Issue date Sep 4, 1984
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Ludwig Eigenmann
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Retro-reflecting sheet material
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Patent number 4,340,273
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Issue date Jul 20, 1982
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Alcan Research and Development Limited
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Stanton E. Jack
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Transparent friction surface sheet material
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Patent number 4,328,274
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Issue date May 4, 1982
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Minnesota Mining and Manufacturing Company
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Kent S. Tarbutton
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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