Inventor · Toyonaka, JP

Tetsuo Kohno

39Patents
13h-index
22Co-inventors
77Inventor score

Filing activity: Jun 12, 1991 → Feb 22, 2007

Most-cited inventions

PatentTitleAreaCited byStatus
US6404561B1 Taking lens apparatus Physics 79 Expired
US6449433B2 Taking lens device Physics 33 Expired
US5283693A Compact zoom lens system Physics 33 Expired
US5257135A Compact zoom lens system Physics 29 Expired
US6028717A Zoom lens system Physics 28 Expired
US6229655A Zoom lens system Physics 25 Expired
US6025961A Zoom lens system having two lens units Physics 24 Expired
US6038084A Zoom lens system Physics 21 Expired
US5455714A Zoom lens system Physics 21 Expired
US6532114B1 Zoom lens system Physics 19 Expired
US5872660A Taking lens system Physics 15 Expired
US6101043A Zoom lens system Physics 15 Expired
US5539582A Zoom lens system Physics 14 Expired
US7692869B2 Image-taking lens unit Physics 13 Active
US6456443B2 Zoom lens system Physics 13 Expired
US5963377A Taking optical system for video shooting Physics 12 Expired
US5872659A Zoom lens system Physics 11 Expired
US5446592A Compact zoom lens system Physics 11 Expired
US7443599B2 Magnification varying optical system and image taking apparatus Physics 11 Active
US6118592A Zoom lens system Physics 11 Expired
US5424870A Compact zoom lens system Physics 11 Expired
US6011648A Optical system having an optical element made of resin Physics 11 Expired
US6191895A Zoom lens system Physics 9 Expired
US6002529A Zoom lens system Physics 8 Expired
US5999324A Optical system for focusing an object up on an image surface of a solid-state image device Physics 7 Expired

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