| Dr. D.M.Tombs | (worked for Hoover!) | Corona Wind Loudspeaker | Gerald Shirley | CZ | 1955 | Prototypes only, Gerald Shirley tried to market it. |
| Fransson F. | KTH Computer Science | STL Ionophone | | B | 1965 | Used for acoustic measurement |
| Dr. A. G. Cattaneo | United Technology Center, UTC | Flame Loudspeaker, Talking Flame | Wayne Babcock,K. L. Baker | Flame | 1968 | Electrodes in a welding torch flame modulating it |
| Albert Von Schweikert | Cal Tech (uni) | A plasma driver | Dr. Richard Heyser | B | 1970 s | Developed for a US company? |
| John Gordon Iverson | Electro Research then Electron Kinetics | Force-field Speaker | | CXY | 1973 | Based on Tombs' corona wind |
| Ostroumov, G A | | Ionophone | | C | 1979 | Russian prof, ring arrangement |
| Gregor Antes | Laborantes | Ionophone | Guido Melliger | B | 1980 s? | Plasma headphones |
| Nelson Pass | Threshold Audio Inc. | Ion Cloud Panel | | CZ | 1980 s | Prototype corona wind wire based panel |
| IML | IML | Digiplasma | | BX | 1981 | PWM Prototype |
| Alain Deraedt | | Push pull corona prototype | Pascal Freulon | C | 1987 | Patent FR2588710, Science&Vie High Tech Article |
| Jean-Claude Fourriere | AHL (Acieries du Haut Languedoc) | Tolteque | Ran the Plasmasonic Company, Audio reference | B | 1990 | Demoed at trade shows. Tolteques sold were ESL |
| Credo | Credo Audio AG | SDP 001 | Vinzenz von Tscharner | BX | 1996 | Demoed at Ramada by Townshend Audio, a late Ionophone clone |
| Igor A. Krichtafovitch, et.al | Kronos Air Technologies | EFA Loudspeaker | | CZ | 2008 | A classic corona wind design detailed, Company now closed |
| Iskender Dzhanagayev | Waveion | Waveion | Vitali | CYX | 2014 | Sought funding, demoed at CES etc. |
| Paul Gilligan | Sonarc Innovations | Sonarc | Sorcha O'Brien | BZ | 2016 | Multiple small plasmas to create a full range plasma speaker |
| Jianxing Cai | Cloudsound | Ionomax (Lonomax) | | BZ | 2017 | Kickstarter (not funded), exists only as CGI renders of desktop stereo plasma |
