Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4809519 | Methods and apparatuses for conducting solid-liquid-vapor multiple phase transformation operations | Chen-Yen Cheng, Wu Cheng | 1989-03-07 |
| 4810274 | Vacuum freezing ambient pressure melting (VFAPM) process and sub-triple point vapor processing unit for use therein | Chen-Yen Cheng | 1989-03-07 |
| 4650507 | Wet and dry distillative freezing process for separating mixtures and apparatuses for use therein | Chen-Yen Cheng | 1987-03-17 |
| 4578093 | Wet and dry distillative freezing process for separating mixtures and apparatuses for use therein | Chen-Yen Cheng | 1986-03-25 |
| 4505728 | Vacuum freezing multiple phase transformation process and apparatus for use therein | Chen-Yen Cheng | 1985-03-19 |
| 4489571 | Fractional solidification process and apparatuses for use therein | Chen-Yen Cheng | 1984-12-25 |
| 4451273 | Distillative freezing process for separating volatile mixtures and apparatuses for use therein | Chen-Yen Cheng | 1984-05-29 |
| 4433558 | Parallel contact distillative freezing process for separating volatile mixtures and apparatuses for use therein | Chen-Yen Cheng | 1984-02-28 |
| 4420318 | Vacuum freezing process with multiple phase transformations of low pressure vapor | Chen-Yen Cheng | 1983-12-13 |
| 4378984 | Distillative freezing process for separating volatile mixtures | Chen-Yen Cheng | 1983-04-05 |
| 4236382 | Separation of an aqueous solution by the improved vacuum freezing high pressure ice melting process | Chen-Yen Cheng, Wu-Cheng Cheng | 1980-12-02 |
| 4218893 | Distillative freezing process for separating volatile mixtures and apparatuses for use therein | Chen-Yen Cheng | 1980-08-26 |