John E. Hammill, Sr.
58Patents
29h-index
7Co-inventors
81Inventor score
Filing activity: Feb 29, 2000 → Jun 18, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| 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 |
| 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 |
| US10022239B1 | Spinal implant with opposing taper coaxial drive system | Human Necessities | 46 | 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.