Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4966710 | Method for removing magnesium and calcium from sodium sulfate solutions | Tai K. Kim | 1990-10-30 |
| 4803062 | Method for producing tungsten hexachloride | Robin W. Munn, Kenneth T. Reilly | 1989-02-07 |
| 4759915 | Process for extracting tungsten from alkali metal tungstate solutions | Tai K. Kim, Alan D. Douglas, Martin B. MacInnis | 1988-07-26 |
| 4751061 | Process for recovering scandium from waste material | Tai K. Kim | 1988-06-14 |
| 4626424 | Method of producing crystalline ammonium metatungstate | Tai K. Kim | 1986-12-02 |
| 4612180 | Method of producing crystalline ammonium metatungstate | Tai K. Kim, Clarence D. Vanderpool | 1986-09-16 |
| 4612182 | Method of producing crystalline ammonium metatungstate | Tai K. Kim, Martin B. MacInnis | 1986-09-16 |
| 4557924 | Method of producing crystalline ammonium metatungstate | Tai K. Kim | 1985-12-10 |
| 4374099 | Recovery of tungsten values from alkali tungstate solutions by solvent extraction | Tai K. Kim, Martin B. MacInnis, Martin Vogt | 1983-02-15 |
| 4369165 | Recovery of tungsten values from alkali tungstate solutions by solvent extraction | Tai K. Kim, Martin B. MacInnis, Martin Vogt | 1983-01-18 |
| 4360502 | Recovery of tungsten values from alkali tungstate solutions by solvent extraction | Martin B. MacInnis, Tai K. Kim | 1982-11-23 |
| 4338126 | Recovery of tungsten from heavy metal alloys | Clarence D. Vanderpool | 1982-07-06 |
| 4288216 | Calciner with tapered reverse feed spiral | James N. Christini, Tai K. Kim | 1981-09-08 |
| 4288217 | Rotary calciner feed spiral | James N. Christini, Tai K. Kim | 1981-09-08 |
| 4283258 | Recovery of tungsten from heavy metal alloys | Clarence D. Vanderpool | 1981-08-11 |
| 4278463 | Process for recovering cobalt | Clarence D. Vanderpool, Martin B. MacInnis, Richard G. W. Gingerich | 1981-07-14 |
| 4218240 | Method for producing cobaltic hexammine compounds and cobalt metal powder | Richard G. W. Gingerich | 1980-08-19 |