Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4734376 | Process for the spectrophotometric measurement of lithium ion employing a chromogenic aza-12-crown-4- ether | Ken Sasaki | 1988-03-29 |
| 4711853 | Method of detecting potassium ions using trifluoromethyl-substituted chromogenic crown ethers | Bernard P. Bubnis | 1987-12-08 |
| 4659815 | Chromogenic aza-12-crown-4 ethers and method of using same for the detection of lithium | Ken Sasaki | 1987-04-21 |
| 4436923 | Trifluoromethyl-substituted chromogenic crown ethers and methods of using same | Benard P. Bubnis | 1984-03-13 |