Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5904749 | Gas chromatographic method | Christopher Huk-Shi Chen, Shinn-Der Chang, Chengwen Weng, Yuanming Tang, Ingo Bernd Holzhueter | 1999-05-18 |
| 4780116 | Low temperature preparative gas chromatography apparatus | Christopher H. Cheh, Ronald E. Massey, Otto K. Kveton, Savtantar K. Sood | 1988-10-25 |
| 4732581 | Gas chromatographic method for separating hydrogen isotopes | Christopher H. Cheh, Ronald E. Massey, Otto K. Kveton, Savtantar K. Sood | 1988-03-22 |