Robert D. Walker
10Patents
7h-index
10Co-inventors
63Inventor score
Filing activity: Nov 5, 1973 → Nov 30, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4804628A | Hollow fiber cell culture device and method of operation | Chemistry; Metallurgy | 94 | Expired |
| US4618586A | Apparatus for administering a controlled dosage of a chemical substance having an improved culture chamber | Physics | 71 | Expired |
| US5590482A | Excavator and earthen material excavator bucket apparatus | Emerging Cross-Sectional Technologies | 31 | Expired |
| US8075031B2 | HVAC filter changing system | Emerging Cross-Sectional Technologies | 17 | Active |
| US3976279A | High pressure valve | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4057678A | Molten salt battery having inorganic paper separator | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6355435B1 | Methods for detecting and enumerating Campylobacter jejuni in environmental samples and for identifying antibiotic-resistant strains | Emerging Cross-Sectional Technologies | 10 | Expired |
| USD333760S | Combined top pie crust sealer and trimmer | General | 5 | Expired |
| US8714598B2 | Hydraulic fluid coupling comprising an inline swivel joint | Mechanical Engineering; Lighting; Heating | 4 | Active |
| USD372886S | Roadrunner golf trophy | General | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.