Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5340931 | Aromatic allene compounds of the formula (CH.sub.2 .dbd.CH--O).sub.n --R--(A.sub.m in which R is an aromatic group and preparation thereof | Mitsuo Yamada, Kei Roger Aoki, Keizou Ishii | 1994-08-23 |
| 4803252 | Particles of crosslinked polymer prepared by emulsion polymerization in the absence of dispersion stabilizer | Katsuaki Kida, Akio Kashihara, Keizou Ishii | 1989-02-07 |