国家/地区 世界知识产权组织（3）
IPC部 B（3）
IPC大类 B05（3） B82（2）
IPC小类 B05D（3） B82Y（2）
IPC B05D005/12（3） B82Y030/00（2）
发明人 SCHEFFER D（3） LETTOW J S（2）
公开年 2012（2）
申请年 2011（2） 
专利权人 SCHEFFER D（3）

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.

LETTOW J, SCHEFFER D, LETTOW J S

Making conductive image useful in e.g. security device, involves forming image on substrate, overcoating the image with coating containing graphene sheets, and removing a portion of the coating from the substrate.

REDMOND K, SCHEFFER D

Composition, useful for e.g. making articles e.g. fuel filter housings, rubber goods, tires, heat sinks, pipes, sensor components and gaskets, comprises at least one polymer binder e.g. polyamide, graphene sheets, and graphite.

VARMA V, SHEFFER D, GINNEMAN C R, LETTOW J S, SCHEFFER D, SHAF D, ZINNEMAN C R