Robert D. Stewart
36Patents
11h-index
7Co-inventors
68Inventor score
Filing activity: Oct 9, 1973 → Nov 21, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4536121A | Divided rotary valve feeder | Performing Operations; Transporting | 43 | Expired |
| US4227488A | Fluidized bed unit including a cooling device for bed material | Performing Operations; Transporting | 35 | Expired |
| US4349969A | Fluidized bed reactor utilizing zonal fluidization and anti-mounding pipes | Performing Operations; Transporting | 33 | Expired |
| US4732748A | Finely divided calcium carbonate compositions | Chemistry; Metallurgy | 26 | Expired |
| US4130130A | Valve with variable secondary orifice | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4404755A | Fluidized bed heat exchanger utilizing induced diffusion and circulation | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4335661A | Fluidized bed heat exchanger having an air assisted bed drain | Performing Operations; Transporting | 13 | Expired |
| US4333909A | Fluidized bed boiler utilizing precalcination of acceptors | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4274956A | Extraction process using solid stabilized emulsions | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4436507A | Fluidized bed reactor utilizing zonal fluidization and anti-mounding air distributors | Performing Operations; Transporting | 11 | Expired |
| US4268395A | Extraction by solid stabilized emulsions | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4397102A | Fluidized bed heat exchanger incorporating induced circulation utilizing directional and/or differential bed fluidization | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US4913711A | Spiral coil cool wall construction for high temperature cylindrical furnaces, vessels, cyclones, etc. | Performing Operations; Transporting | 10 | Expired |
| US4446629A | Fluidized bed heat exchanger utilizing induced circulation | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4359968A | Fluidized bed heat exchanger utilizing a baffle system | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4445443A | Fluidized bed heat exchanger having separating drain and method of operation thereof | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| USD921767S1 | Scooter | General | 6 | Active |
| US4521976A | Method of operating a fluidized bed heat exchanger utilizing induced circulation | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US3944653A | Process for preparing high purity antimony trichloride and antimony oxide from stibnite ores | Chemistry; Metallurgy | 4 | Expired |
| US4332218A | Support system for a fluidized bed | Performing Operations; Transporting | 4 | Expired |
| US11130048B2 | Three-dimensional puzzle containing moveable elements | Human Necessities | 4 | Active |
| US4177741A | System and method for improving the reaction efficiency of a fluidized bed | Performing Operations; Transporting | 4 | Expired |
| USD597218S1 | Bi-pod hunters blind | General | 3 | Expired |
| USD921766S1 | Scooter | General | 2 | Active |
| US4526759A | Fluidized bed reactor utilizing in-bed heat exchanger tubes which register with water wall tubes | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.