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  2. 国际专利信息
  • 专利标题:   Multilayered security device useful for preventing tampering comprises a first layer comprising a patterned substrate and a second layer overlying the pattern where the second layer comprises a coating composition comprising graphene sheets.
  • 专利号:   WO2012068177-A1, US2014145426-A1, US9731540-B2, US9956806-B1
  • 发明人:   LETTOW J, SCHEFFER D, LETTOW J S
  • 专利权人:   VORBECK MATERIALS CORP, LETTOW J, SCHEFFER D, VORBECK MATERIALS CORP, VORBECK MATERIALS CORP, LETTOW J S, VORBECK MATERIALS CORP
  • 国际专利分类:   B05D005/12, B42D015/00, B42D025/00, B42D025/21, B42D025/29, B42D025/373, B42D025/45, B82Y030/00
  • 专利详细信息:   WO2012068177-A1 24 May 2012 B05D-005/12 201240 Pages: 32 English
  • 申请详细信息:   WO2012068177-A1 WOUS060878 15 Nov 2011
  • 优先权号:   US413968P, US13885673, US610790

▎ 摘　　要

NOVELTY - A multilayered security device, comprises a first layer comprising a patterned substrate and a second layer overlying the pattern where the second layer comprises a coating composition comprising graphene sheets. USE - The multilayered security device is useful for protecting a wide range of material goods and documents from tampering, fraud, counterfeiting, and theft. ADVANTAGE - The multilayered security device is simple and inexpensive to make and operate, and can be efficiently and effectively used for preventing tampering. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is a method of making the multilayered security device, comprising applying a coating composition comprising graphene sheets to a patterned substrate. DESCRIPTION OF DRAWING(S) - The drawings show a schematic view of a patterned substrate and a security device. Patterned substrate (10) Pattern (11) Coating (12) Security device (13) Portion (14) Background area (15)