Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5407780 | Radiation-sensitive positive resist composition comprising an alkali-soluble resin made from m-cresol, 2-tert-butl-5-methyl phenol and formaldehyde | Takeshi Hioki, Yasunori Uetani, Yasunori Doi, Hiroshi Moriuma | 1995-04-18 |
| 5403696 | Radiation-sensitive positive resist composition comprising an alkali-soluble resin made from tert-butyl-methyl phenol | Takeshi Hioki, Yasunori Uetani, Yasunori Doi | 1995-04-04 |