Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4963254 | Packing material for chromatographic use | Hajimu Kitahara, Tadashi Doi | 1990-10-16 |
| 4604207 | Packing materials for chromatographic use and a method for analysis of an enantiomer mixture using the same | Tadashi Doi, Masayuki Nagase | 1986-08-05 |
| 4512898 | Packing materials for chromatographic use and a method for analysis of an enantiomer mixture using the same | Hajimu Kitahara | 1985-04-23 |
| 4332591 | Analytical method and apparatus for the determination of total nitrogen contents in aqueous systems | Tadamasa Itoh, Yoshiaki Yasumasa | 1982-06-01 |