Inventor · Windom, MN, US

Robert L. Assell

80Patents
35h-index
26Co-inventors
88Inventor score

Filing activity: Jul 18, 1983 → Jan 27, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US5824093A Prosthetic spinal disc nucleus Human Necessities 683 Expired
US6022376A Percutaneous prosthetic spinal disc nucleus and method of manufacture Human Necessities 571 Expired
US6132465A Tapered prosthetic spinal disc nucleus Human Necessities 571 Expired
US6921403B2 Method and apparatus for spinal distraction and fusion Emerging Cross-Sectional Technologies 471 Expired
US6113639A Trial implant and trial implant kit for evaluating an intradiscal space Human Necessities 383 Expired
US5546958A Guidewire extension system with tactile connection indication Human Necessities 197 Expired
US6602291B1 Prosthetic spinal disc nucleus having a shape change characteristic Human Necessities 192 Expired
US7799033B2 Access kits for enabling axial access and procedures in the spine Human Necessities 160 Active
US7588574B2 Kits for enabling axial access and procedures in the spine Human Necessities 157 Expired
US7763025B2 Spinal fusion kit for guiding instrumentation through soft tissue to a point on the spine Human Necessities 155 Active
US7473256B2 Method and apparatus for spinal distraction Human Necessities 144 Expired
US7500977B2 Method and apparatus for manipulating material in the spine Human Necessities 127 Active
US8348950B2 Sacroiliac fusion system Human Necessities 123 Active
US7740633B2 Guide pin for guiding instrumentation along a soft tissue tract to a point on the spine Human Necessities 121 Active
US7799032B2 Guide pin introducer for guiding instrumentation through soft tissue to a point on the spine Human Necessities 114 Active
US7662173B2 Spinal mobility preservation apparatus Human Necessities 100 Active
US7491236B2 Dual anchor prosthetic nucleus apparatus Human Necessities 99 Expired
US7608077B2 Method and apparatus for spinal distraction and fusion Human Necessities 93 Active
US7601171B2 Spinal motion preservation assemblies Human Necessities 91 Active
US7776068B2 Spinal motion preservation assemblies Human Necessities 78 Active
US7547324B2 Spinal mobility preservation apparatus having an expandable membrane Human Necessities 77 Expired
US8394125B2 Systems and methods for facet joint treatment Human Necessities 70 Active
US4527726A Bone stapler Human Necessities 67 Expired
US9161763B2 Sacroiliac fusion system Human Necessities 62 Active
US9149283B2 Sacroiliac fusion system Human Necessities 61 Active

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