Donald Smith
12Patents
2Active
12Granted
37Portfolio score
Filing activity: Jun 3, 1977 → May 3, 2017
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4965435A | Forced convection tunnel oven | Human Necessities | 62 | Expired |
| US4750276A | Impingement thermal treatment apparatus with collector plate | Mechanical Engineering; Lighting; Heating | 58 | Expired |
| US5134263A | Infrared heating control | Electricity | 58 | Expired |
| US4835351A | Oven humidity reservoir | Human Necessities | 55 | Expired |
| US4679542A | Fan-plenum configuration | Human Necessities | 46 | Expired |
| US4523391A | High efficiency impingement heating and cooling apparatus | Mechanical Engineering; Lighting; Heating | 40 | Expired |
| US5835322A | Ground fault interrupt circuit apparatus for 400-Hz aircraft electrical systems | Electricity | 38 | Expired |
| US4831238A | High volume forced convection tunnel oven | Human Necessities | 36 | Expired |
| US4368664A | Apparatus to transfer heat to a product and side loading door therefor | Human Necessities | 15 | Expired |
| USD838250S1 | Flush ring spacer design for electrical receptacles | General | 14 | Active |
| US4162020A | Anti-spill device | Emerging Cross-Sectional Technologies | 9 | Expired |
| US10490961B2 | Flush ring spacer for electrical receptacles | Electricity | 3 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.