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홈페이지를 소개합니다. 미국 분류 체계에 의하여 최신 특허들의 간략 정보를 소개하는 홈페이지입니다. http://patents.justia.com Metal working (Class 29) http://patents.justia.com/patents-by-us-classification/29 Metal deforming (Class 72) http://patents.justia.com/patents-by-us-classification/72 Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures (Class 75) http://patents.justia.com/patents-by-us-classification/75 Metal treatment (Class 148) http://patents.justia.com/patents-by-us-classification/148 Metal fusion bonding (Class 228) http://patents.justia.com/patents-by-us-classification/148 Metallurgical apparatus (Class 266) http://patents.justia.com/patents-by-us-classification/226 Powder metallurgy processes (Class 419) http://patents.justia.com/patents-by-us-classification/419 Alloys or metallic compositions (Class 420) http://patents.justia.com/patents-by-us-classification/420 Organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system (Class 987) http://patents.justia.com/patents-by-us-classification/987