Inventor · Yokohama, JP

Kazuyo Umezawa

55Patents
2h-index
17Co-inventors
53Inventor score

Filing activity: Dec 17, 2003 → Jan 10, 2013

Most-cited inventions

PatentTitleAreaCited byStatus
US7512046B2 Optical disk apparatus and method for controlling the same Physics 4 Active
US7869339B2 Multi-layer optical disc, information recording method and information reproducing method Physics 2 Active
US7033659B2 Optical information recording medium and method of recording and reproducing information on and from optical information recording medium Emerging Cross-Sectional Technologies 2 Expired
US8149672B2 Optical recording medium, information recording method, and information reproducing method Physics 1 Active
US8142693B2 Stamper and stamper evaluation method Emerging Cross-Sectional Technologies 1 Active
US7914969B2 Storage medium, reproducing method, and recording method Emerging Cross-Sectional Technologies 1 Active
US8137894B2 Storage medium, reproducing method, and recording method Emerging Cross-Sectional Technologies 1 Active
US8437242B2 Optical recording medium for writing data using multiple pulses Physics 1 Active
US8142981B2 Storage medium, reproducing method, and recording method Physics 1 Active
US8139459B2 Optical recording medium, information recording method, and information reproducing method Physics 1 Active
US8154970B2 Optical recording medium, information recording method, and information reproducing method Physics 1 Active
US8551685B2 Ultraviolet-curing resin material for pattern transfer and magnetic recording medium manufacturing method using the same Physics 1 Active
US7995442B2 Optical recording medium, information recording method, and information reproducing method Physics 1 Active
US8154971B2 Optical recording medium, information recording method, and information reproducing method Physics 1 Active
US7960093B2 Storage medium, reproducing method, and recording method Emerging Cross-Sectional Technologies 1 Active
US8134899B2 Optical recording medium, information recording method, and information reproducing method Physics 1 Active
US7864654B2 Optical recording medium, information recording method, and information reproducing method Physics 1 Active
US8173029B2 Magnetic recording medium manufacturing method Chemistry; Metallurgy 1 Active
US8593930B2 Optical recording medium, information recording method, and information reproducing method Physics 0 Active
US8218416B2 Multi-layer optical disc, information recording method and information reproducing method Physics 0 Active
US8179763B2 Optical disc, information recording method, and information reproducing method Physics 0 Active
US8184517B2 Optical recording medium, information recording method, and information reproducing method Physics 0 Active
US8310913B2 Optical recording medium capable of using wide ranges of linear velocity recording Physics 0 Active
US8159920B2 Optical recording medium, information recording method, and information reproducing method Physics 0 Active
US8422353B2 Optical recording medium for writing data using multiple pulses Physics 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.