Inventor · Ida, MI, US

Robert L. Doubler

51Patents
29h-index
5Co-inventors
81Inventor score

Filing activity: Feb 29, 2000 → Sep 21, 2020

Most-cited inventions

PatentTitleAreaCited byStatus
US6623485B2 Split ring bone screw for a spinal fixation system Human Necessities 432 Expired
US7335201B2 Polyaxial bone screw with torqueless fastening Human Necessities 222 Expired
US7678136B2 Spinal fixation assembly Human Necessities 197 Active
US7090674B2 Bone fixation system with low profile fastener Human Necessities 195 Expired
US7947065B2 Locking polyaxial ball and socket fastener Human Necessities 155 Active
US6887242B2 Split ring bone screw for a spinal fixation system Human Necessities 153 Expired
US6551323B2 Method of making a bonescrew Human Necessities 141 Expired
US7083651B2 Spinal implant Human Necessities 126 Expired
US6299648A Locking hip prosthesis Human Necessities 120 Expired
US7951173B2 Pedicle screw implant system Human Necessities 115 Active
US8197518B2 Thread-thru polyaxial pedicle screw system Human Necessities 114 Active
US7105029B2 Skeletal fixation device with linear connection Emerging Cross-Sectional Technologies 106 Expired
US8075603B2 Locking polyaxial ball and socket fastener Human Necessities 104 Active
US6375657B1 Bonescrew Human Necessities 100 Expired
US7942909B2 Thread-thru polyaxial pedicle screw system Human Necessities 89 Active
US7942910B2 Polyaxial bone screw Human Necessities 86 Active
US7438715B2 Spinal implant kit Human Necessities 77 Expired
US6692530B2 Split sleeve modular joint Human Necessities 74 Expired
US7322984B2 Spinal plate with internal screw locks Human Necessities 65 Expired
US6355068B1 Sight gauge modular joint and method Human Necessities 61 Expired
US7942911B2 Polyaxial bone screw Human Necessities 60 Active
US6440171B1 Double D key locking prosthesis Human Necessities 56 Expired
US8197546B2 Corpectomy implant Human Necessities 50 Active
US8663290B2 Top loading polyaxial ball and socket fastener with saddle Human Necessities 42 Active
US8465530B2 Locking polyaxial ball and socket fastener Human Necessities 41 Active

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