Donald C. Walker
19Patents
12h-index
16Co-inventors
75Inventor score
Filing activity: Feb 23, 1979 → Oct 8, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5788099A | Vessel for containing batch quantities of dialysate or other physiologic solution chemicals | Emerging Cross-Sectional Technologies | 98 | Expired |
| US5658456A | Batch dialysate chemical vessel with machine-readable indicator | Emerging Cross-Sectional Technologies | 69 | Expired |
| US4429725A | Dispensing nozzle for vacuum assist vapor recovery system | Performing Operations; Transporting | 49 | Expired |
| US5000614A | Conduit quick connector assembly having a ramped housing with a hair pin retainer | Emerging Cross-Sectional Technologies | 49 | Expired |
| US4869534A | Swivelable quick connector | Mechanical Engineering; Lighting; Heating | 48 | Expired |
| US5273254A | Fluid conduit quick connectors with anti-spill valves | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US5257833A | Metal retainer for quick connect tubing connector | Emerging Cross-Sectional Technologies | 28 | Expired |
| USD403079S | Chemical vessel | General | 26 | Expired |
| US5324080A | Low pressure tubing quick connector | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US5161832A | Plastic retainer for fluid coupling | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5705066A | Apparatus for opening a vessel | Emerging Cross-Sectional Technologies | 14 | Expired |
| USD395517S | Chemical vessel | General | 13 | Expired |
| US4505308A | Sealing device for liquid dispensing nozzles which recover vapor having conduit internal to fillpipe | Performing Operations; Transporting | 8 | Expired |
| US7780201B2 | Tube connector with three part construction and latching component | Human Necessities | 7 | Active |
| US5338002A | Fluid conduit quick connectors with anti-spill valves | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US11172585B1 | Magnetic operator interface assembly | Electricity | 5 | Active |
| US8096824B2 | Tube connector with a latching component to secure a receptacle to a plug | Human Necessities | 3 | Active |
| US4351006A | Method of and apparatus for storing data signals | Physics | 1 | Expired |
| US11553615B2 | Magnetic operator interface assembly | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.