Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6111942 | Communication transfer apparatus | — | 2000-08-29 |
| 6094563 | Communication apparatus | — | 2000-07-25 |
| 5915014 | Communication system | — | 1999-06-22 |
| 5835180 | Telephone and key telephone system having electronic directory function | — | 1998-11-10 |
| 5586172 | Telephone exchange system | Shigeki Sakurai, Yoshihiro Tanigawa, Masatomo Ohuchi, Shoji Suzuki, Kuniaki Ohtsuka | 1996-12-17 |
| 5153908 | Automatic redial in a key telephone system having different line types | Shoichi Takashima | 1992-10-06 |
| 5054058 | Telephone and telephone system having improved one-touch calling | — | 1991-10-01 |
| 4996708 | Key telephone system adapted to respond to information stored in a portable outpulser | — | 1991-02-26 |
| 4991203 | Line switching apparatus and method | — | 1991-02-05 |