![]() 239000002245 particle Substances 0.000 title claims abstract description 843.Assignors: MAEKAWA, MASAAKI, OKINAKA, KENJI Application granted granted Critical Publication of US6309479B1 publication Critical patent/US6309479B1/en Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to JP31508098 priority Critical Priority to JP10-315080 priority Priority to JP10-344410 priority Priority to JP34441098 priority Application filed by Toda Kogyo Corp filed Critical Toda Kogyo Corp Assigned to TODA KOGYO CORPORATION reassignment TODA KOGYO CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Original Assignee Toda Kogyo Corp Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US09/260,481 Inventor Kenji Okinaka Masaaki Maekawa Current Assignee (The listed assignees may be inaccurate. Google Patents Spindle-shaped goethite particles, spindle-shaped hematite particles and magnetic spindle-shaped metal particles containing iron as main componentÄownload PDF Info Publication number US6309479B1 US6309479B1 US09/260,481 US26048199A US6309479B1 US 6309479 B1 US6309479 B1 US 6309479B1 US 26048199 A US26048199 A US 26048199A US 6309479 B1 US6309479 B1 US 6309479B1 Authority US United States Prior art keywords particles spindle shaped goethite atm Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US6309479B1 - Spindle-shaped goethite particles, spindle-shaped hematite particles and magnetic spindle-shaped metal particles containing iron as main component US6309479B1 - Spindle-shaped goethite particles, spindle-shaped hematite particles and magnetic spindle-shaped metal particles containing iron as main component
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