Retroreflective sheet material
Patent 3934065 Issued on January 20, 1976. Estimated Expiration Date: 
January 20, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 20, 1993. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2586017 2624967 2937668 2957444 3042561 3297461 3790431 InventorApplicationNo. 05/384703 filed on 08/01/1973US Classes:428/76, Complete cover or casing359/538, On flexible substrate (e.g., flexible sheeting, bumper sticker, etc.)359/540, Placed on top of binder (e.g., resin, asphalt, glue, etc.)40/615, Multiple layer428/402, Particulate matter (e.g., sphere, flake, etc.)428/913MATERIAL DESIGNED TO BE RESPONSIVE TO TEMPERATURE, LIGHT, MOISTURE, ETC.ExaminersPrimary: Kendall, Ralph S.Assistant: Buffalow, Edith Attorney, Agent or FirmInternational ClassesE01F 9/011 (20060101)E01F 9/012 (20060101) G02B 5/128 (20060101) G02B 5/12 (20060101) AbstractA new retroreflective sheet material is taught that comprises a light-transmissive retroreflective open web of filaments that are individually encased by a monolayer of minute retroreflective microspheres, the web being ensheathed within an envelope that comprises two overlaid sheets joined together around the edge of the envelope, at least one of the sheets being transparent. | |
