Donald J. Hackman
38Patents
17h-index
49Co-inventors
81Inventor score
Filing activity: Apr 11, 1977 → Apr 26, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6645207B2 | Method and apparatus for dynamized spinal stabilization | Human Necessities | 491 | Expired |
| US6656181B2 | Method and device utilizing tapered screw shanks for spinal stabilization | Human Necessities | 305 | Expired |
| US6682530B2 | Dynamized vertebral stabilizer using an outrigger implant | Human Necessities | 142 | Expired |
| US6695845B2 | Method and apparatus utilizing interference fit screw shanks for nonmetallic spinal stabilization | Emerging Cross-Sectional Technologies | 140 | Expired |
| US6663637B2 | Vertebral distraction stabilizer | Human Necessities | 81 | Expired |
| US6666870B2 | Method utilizing chemical bonding to improve the bone screw fixation interface | Human Necessities | 61 | Expired |
| US6709438B2 | Cam action vertebral spreader | Human Necessities | 54 | Expired |
| US5487229A | Apparatus for pneumatic excavation | Fixed Constructions | 51 | Expired |
| US7104991B2 | Method and device for using extended interference fit screw shanks for spinal stabilization | Human Necessities | 40 | Expired |
| US5038523A | Seawater hydraulic rotary disk tool | Performing Operations; Transporting | 33 | Expired |
| USD497993S1 | Bioabsorbable structural interbody vertebral implant | General | 28 | Expired |
| US5788212A | Pressure relief device with shaped memory alloy thermally activated trigger | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| USD462247S1 | Toggle actuated sheet metal end shear | General | 23 | Expired |
| US5427268A | Ceramic pressure housing with metal endcaps | Physics | 19 | Expired |
| US4217717A | Automatic weapon simulator | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US6155310A | Machinery for automated manufacture of formed wire innerspring assemblies | Performing Operations; Transporting | 17 | Expired |
| USD423377S | Radiation detecting probe | General | 17 | Expired |
| US5791367A | Pressure relief device | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5236675A | Gas generator with circumferential joints | Performing Operations; Transporting | 13 | Expired |
| US4869136A | Fastener gripping mechanism for bolt running operations | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4433633A | Controlled gas generator system | Emerging Cross-Sectional Technologies | 11 | Expired |
| USD524941S1 | Absorbable threaded bone cage implant | General | 11 | Expired |
| USD424453S | Detector unit for radiation detecting probe | General | 10 | Expired |
| US4593885A | Portable balanced motion compensated lift apparatus | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4448569A | Lift sling emplacement device | Performing Operations; Transporting | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.