Inventor · Saitama, JP

Yu Kitahara

27Patents
5h-index
9Co-inventors
58Inventor score

Filing activity: May 28, 2003 → Nov 28, 2016

Most-cited inventions

PatentTitleAreaCited byStatus
US7663814B2 Imaging lens system and imaging apparatus Physics 31 Active
US8040618B2 Imaging lens and imaging apparatus using imaging lens Physics 24 Active
US7911712B2 Imaging lens and imaging apparatus Physics 13 Active
US9753256B2 Imaging lens and imaging apparatus Physics 5 Active
US7483221B2 Image reading lens, image optical system and image reader Physics 5 Active
US6781771B2 Objective lens for optical recording medium and optical pickup device using it Physics 4 Expired
US7903349B2 Imaging lens and imaging apparatus using imaging lens Human Necessities 4 Active
US8223245B2 Imaging lens and image pickup apparatus Physics 4 Active
US7502299B2 Objective optical system and optical pickup device using it Physics 3 Active
US7443779B2 Objective optical system for optical recording media and optical pickup device using it Physics 3 Active
US7220064B2 Coupling optical system for optical communications Physics 2 Expired
US9952413B2 Imaging lens and imaging apparatus Physics 2 Active
US7457223B2 Objective lens for optical recording media and optical pickup device using it Physics 2 Expired
US7286463B2 Objective lens and optical pickup device using it Physics 1 Active
US7613098B2 Objective optical system for optical recording media and optical pickup device using it Physics 1 Active
US9465201B2 Imaging lens and imaging apparatus Physics 1 Active
US7298687B2 Optical recording media objective lens and optical pickup device using it Physics 1 Expired
US7589914B2 Molded lens Physics 1 Active
US7266070B2 Objective lens for different optical recording media and an optical pickup device utilizing it Physics 0 Expired
US8064319B2 Objective lens, optical pickup device having the same, and recording and/or reproducing apparatus for optical recording medium, equipped with the optical pickup device Physics 0 Active
US8508862B2 Image pickup lens and image pickup apparatus Physics 0 Active
US7680014B2 Objective optical system and optical pickup device using it Physics 0 Active
US7995290B2 Objective lens, optical pickup device, and optical recording/reproducing apparatus Physics 0 Active
US7656594B2 Color image readout lens and color image readout apparatus Physics 0 Active
US8345356B2 Objective lens, optical pickup device, and optical recording/reproducing apparatus Physics 0 Active

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