Izumisawa; Yoshiaki
Patent Applications and Registrations
Patent applications and USPTO patent grants for Izumisawa; Yoshiaki.The latest application filed is for "process for preparing an aqueous slurry of terephthalic acid".
- Izumisawa; Yoshiaki - Tokyo JP
- Izumisawa; Yoshiaki - Kitakyushu JP
- Izumisawa; Yoshiaki - Kitakyusyu JP
| Patent | Date |
|---|---|
| Process for preparing an aqueous slurry of terephthalic acid Grant 5,557,009 - Izumisawa , et al. September 17, 1 | 1996-09-17 |
| Process for producing highly pure terephthalic acid Grant 5,420,344 - Izumisawa , et al. May 30, 1 | 1995-05-30 |
| Process for preparing terephthalic acid of high quality Grant 4,877,900 - Tamaru , et al. October 31, 1 | 1989-10-31 |
| Process for producing highly pure terephthalic acid Grant 4,772,748 - Hashizume , et al. September 20, 1 | 1988-09-20 |
| Process for preparing terephthalic acid by the catalytic oxidation with air of p-xylene in a water containing acetic acid solvent Grant 4,593,122 - Hashizume , et al. June 3, 1 | 1986-06-03 |
| Process for producing terephthalic acid Grant 4,329,493 - Hashizume , et al. May 11, 1 | 1982-05-11 |
| Process for preparing terephthalic acid Grant 4,197,412 - Kimura , et al. April 8, 1 | 1980-04-08 |
| Process for producing terephthalic acid Grant 4,051,178 - Kimura , et al. September 27, 1 | 1977-09-27 |
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