Issued Patents 2003
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6663367 | Shaft seal structure of vacuum pumps | Masahiro Kawaguchi, Ryosuke Koshizaka | 2003-12-16 |
| 6659227 | Oil leak prevention structure for vacuum pump | Masahiro Kawaguchi, Satoru Kuramoto | 2003-12-09 |
| 6659747 | Shaft seal structure of vacuum pumps | Masahiro Kawaguchi, Satoshi Egashira | 2003-12-09 |
| 6659746 | Shaft seal structure of vacuum pumps | Nobuaki Hoshino, Mamoru Kuwahara, Masahiko Okada | 2003-12-09 |
| 6609897 | Motor-operated compressor | Yoshiyuki Nakane, Susumu Tarao, Kenichi Morita, Kazuo Murakami | 2003-08-26 |
| 6594451 | Image forming apparatus, and use situation reporting system for reporting use situations of developer and other consumables stowed in image forming apparatus | Tomomi Kakeshita, Hiroshi Sasame, Hiroaki Ogata | 2003-07-15 |
| 6587649 | Image forming apparatus, cartridge detachably mountable to the image forming apparatus, developer remainder displaying method and system | Hiroaki Ogata | 2003-07-01 |
| 6584291 | IMAGE FORMING APPARATUS FOR CALCULATING A PRINTABLE NUMBER OF SHEETS AND A CARTRIDGE DETACHABLY MOUNTABLE TO THE APPARATUS COMPRISING A MEMORY FOR STORING DATA REPRESENTING A PRESENT AMOUNT OF DEVELOPER | — | 2003-06-24 |
| 6554594 | Shaft seal structure for vacuum pump | Yoshinari Suzuki, Masahiro Ida, Masahiro Kawaguchi | 2003-04-29 |
| 6546212 | Image forming apparatus and unit detachably attachable to the same image forming apparatus and information displaying system related to unit detachably attachable to the same image forming apparatus | Hiroaki Ogata, Hiroshi Sasame | 2003-04-08 |