Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5139892 | Magnetic recording media with resin containing vinyl chloride copolymer | Takeshi Nakachi, Yoshihisa Watanabe | 1992-08-18 |
| 5037893 | Resin used for magnetic recording media derived from vinyl chloride and quaternary monomer | Takeshi Nakachi, Yoshihisa Watanabe | 1991-08-06 |
| 5028676 | Resin for magnetic recording media from vinyl chloride with quanternary and phosphoric monomers | Takeshi Nakachi, Yoshihisa Watanabe | 1991-07-02 |
| 5008357 | Resin for magnetic recording media from vinyl chloride polymer with quaternary groups | Takeshi Nakachi, Yoshihisa Watanabe | 1991-04-16 |
| 4996272 | Resin used for magnetic recording media and a method for the production of the same | Takeshi Nakachi, Yoshihisa Watanabe | 1991-02-26 |
| 4906499 | High density information record medium comprising a polymer material having a lubricant uniformly dispersed therein | Toshiaki Hamaguchi, Kazuhira Namikawa, Toshio Akai, Mutsuaki Nakamura, Akio Kuroda +1 more | 1990-03-06 |
| 4861683 | Quaternary-containing resin used for magnetic recording media | Takeshi Nakachi, Yoshihisa Watanabe | 1989-08-29 |
| 4631717 | High density information records of an electrostatic capacitance type | Kazuhira Namikawa, Toshiaki Hamaguchi, Mutsuaki Nakamura, Akio Kuroda, Noriki Fujii | 1986-12-23 |
| 4592862 | Conductive resin composition and information record | Mutsuaki Nakamura, Kazuhira Namikawa, Toshiaki Hamaguchi, Akio Kuroda, Noriki Fujii | 1986-06-03 |
| 4548739 | High density information records made of conductive resin compositions comprising a specifically-treated vinyl chloride-base resin | Mutsuaki Nakamura, Kazuhira Namikawa, Toshikazu Goshima, Toshiaki Hamaguchi, Akio Kuroda +1 more | 1985-10-22 |
| 4517350 | Process for removing polymer scale adhering to a polymerization vessel | Michifumi Tanga | 1985-05-14 |
| 4465615 | Electroconductive resin composition and a videodisc record | Hiroshi Kake, Noriki Fujii | 1984-08-14 |
| 4404337 | Process for inhibiting the formation of scale in the suspension polymerization of vinyl chloride | Michifumi Tanga | 1983-09-13 |
| 4396660 | Electroconductive resin composition and a videodisc record | Hiroshi Kake, Noriki Fujii | 1983-08-02 |