国家/地区 韩国（4）
IPC部 C（4）
IPC大类 C08（4）
IPC小类 C08L（4）
IPC C08L023/06（4）
发明人 CHOI J H（2） HASEGAWA S（2） HASEGAWA SHOJI（2）
HWAN J E（2） JO C W（2） KAMIYA N（2）
KAMIYA NAGISA（2） KIM H D（2） NAGISA K（2）
SHEN Y（2） SHOJI H（2）
公开年 2015（2） 2023（2）
申请年 2022（2） 
专利权人 GRAPHENE PLA.（2） GRAPHENE PLA.（2）

Breathable and waterproof safety helmet for inspection and diagnosis comprises safety helmet body that can be worn by workers performing safety inspection and diagnosis and has ventilation holes formed in the thickness direction.

CHOI J H, JO C W, KIM H D, HWAN J E

Waterproof helmet used in safety inspection and diagnosis applications, comprises helmet component, and waterproof film including concave-convex portion bonded to component through adhesive comprising crosslinking agent, viscosity modifier, tackifier, polypropylene and heat-resistant polyamide resin.

CHOI J H, JO C W, KIM H D, HWAN J E

Graphite-based carbon material used as graphene precursor for preparing graphene dispersion, comprises rhombohedral graphite layer and hexagonal graphite layer, and has specified rate calculated based on X-ray diffraction method.

HASEGAWA S, KAMIYA N, HASEGAWA SHOJI, KAMIYA NAGISA, SHOJI H, NAGISA K, SHEN Y

Graphite-type carbon raw material used as graphene precursor, has rhombohedral system graphite layer and hexagonal system graphite layer in ratio more than preset value, as measured using peak intensities specific planes of layers.

HASEGAWA S, KAMIYA N, SHOJI H, NAGISA K, HASEGAWA SHOJI, KAMIYA NAGISA, SHEN Y