Inventor · Windom, MN, US

Don Hefner

10Patents
9h-index
19Co-inventors
55Inventor score

Filing activity: May 8, 2008 → Apr 14, 2009

Most-cited inventions

PatentTitleAreaCited byStatus
US8260395B2 Method and apparatus for mapping a structure Physics 118 Active
US8214018B2 Determining a flow characteristic of a material in a structure Human Necessities 103 Active
US8494608B2 Method and apparatus for mapping a structure Human Necessities 89 Active
US8340751B2 Method and apparatus for determining tracking a virtual point defined relative to a tracked member Physics 84 Active
US9179860B2 Determining a location of a member Human Necessities 73 Active
US8831701B2 Uni-polar and bi-polar switchable tracking system between Human Necessities 52 Active
US8660640B2 Determining a size of a representation of a tracked member Human Necessities 15 Active
US8843189B2 Interference blocking and frequency selection Human Necessities 11 Active
US8768434B2 Determining and illustrating a structure Human Necessities 10 Active
US9332928B2 Method and apparatus to synchronize a location determination in a structure with a characteristic of the structure Human Necessities 4 Active

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