Douglas E. Boyd
34Patents
11h-index
60Co-inventors
78Inventor score
Filing activity: Jul 24, 1992 → Dec 20, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5919711A | Analytical cartridge | Emerging Cross-Sectional Technologies | 275 | Expired |
| US5846216A | Mucous membrane infusor and method of use for dispensing medications | Human Necessities | 159 | Expired |
| US5916522A | Electrochemical analytical cartridge | Emerging Cross-Sectional Technologies | 156 | Expired |
| US5882342A | Safety medical syringe with retractable needle | Human Necessities | 58 | Expired |
| US6348176B1 | Cartridge-based analytical instrument using centrifugal force/pressure for metering/transport of fluids | Physics | 53 | Expired |
| US6002475A | Spectrophotometric analytical cartridge | Emerging Cross-Sectional Technologies | 45 | Expired |
| US8672899B2 | Medication injector apparatus with drive assembly that facilitates reset | Human Necessities | 36 | Active |
| US6033914A | Electrochemical analytical cartridge | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5599581A | Method for pneumatically controlling discharge of particulate material | Performing Operations; Transporting | 26 | Expired |
| US5727396A | Method and apparatus for cooling a prime mover for a gas-engine driven heat pump | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5746830A | Pneumatic granule blender for asphalt shingles | Performing Operations; Transporting | 21 | Expired |
| US5830186A | Method of dispensing medications by use of mucous membrane infusor | Human Necessities | 11 | Expired |
| US8808649B2 | System for conducting the identification of bacteria in urine | Physics | 10 | Active |
| US5377448A | Door positioning system | Fixed Constructions | 9 | Expired |
| US5249742A | Coolant circulation system for engine heat pump | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5520889A | Method for controlling the discharge of granules from a nozzle onto a coated sheet | Performing Operations; Transporting | 6 | Expired |
| US10442544B2 | Engine degradation management via multi-engine mechanical power control | Performing Operations; Transporting | 3 | Active |
| US5363673A | Simplified engine coolant system for gas engine heat pump | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8187538B2 | Diluent wells produced in card format for immunodiagnostic testing | Emerging Cross-Sectional Technologies | 3 | Active |
| US11286881B2 | Gas turbine engine with reversible heat exchanger | Emerging Cross-Sectional Technologies | 2 | Active |
| US10697316B2 | Apparatus and method for measuring turbine temperature | Physics | 2 | Active |
| US9606105B2 | System for conducting the identification of bacteria in urine | Physics | 1 | Active |
| US11052195B2 | Process and autoinjector device for injections with increased patient comfort | Human Necessities | 1 | Active |
| US8496878B2 | Diluent wells produced in card format for immunodiagnostic testing | Emerging Cross-Sectional Technologies | 1 | Active |
| US11300049B2 | Inlet guide vane draw heat exchanger system | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.