Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4892048 | Automatic thread tightening device for a sewing machine | Noboru Karuga, Kazumasa Hara, Mitsuru Nishijima | 1990-01-09 |
| 4793273 | Automatic thread tension device for a sewing machine | Kazumasa Hara, Akiyoshi Sasano | 1988-12-27 |
| 4724784 | Device for changing a lower thread running path for a zigzag sewing machine | Kazumasa Hara, Mituru Nishijima | 1988-02-16 |
| 4704975 | Upper and lower thread tension devices for sewing machine | Kazumasa Hara, Akiyoshi Sasano | 1987-11-10 |
| 4702185 | Sewing machine with an automatic thread tension device | Susumu Hanyu, Noburu Kasuga, Kazumasa Hara | 1987-10-27 |
| 4700644 | Sewing machine having an automatic lower thread tension device | Yasukata Eguchi, Susumu Hanyu, Kazumasa Hara | 1987-10-20 |
| 4693193 | Device of guiding drawing-out of a lower thread from a horizontal bobbin carrier of a sewing machine | Susumu Hanyu, Kazumasa Hara, Akiyoshi Sasano | 1987-09-15 |
| 4690083 | Automatic upper thread tension control for a sewing machine | Kazumasa Hara, Akiyoshi Sasano | 1987-09-01 |
| 4674423 | Thread loop taker device of a zigzag sewing machine | Kenzo Goto | 1987-06-23 |
| 4662292 | Thread loop taker device of a zigzag sewing machine | Kenzo Goto, Kazumasa Hara | 1987-05-05 |
| 4638751 | Sewing machine with a device for setting thread tension | Susumu Hanyu, Kazumasa Hara, Akiyoshi Sasano | 1987-01-27 |
| 4606289 | Sewing thread cutting device | Kazumasa Hara, Masashi Sato, Kenji Kaneko | 1986-08-19 |
| 4579072 | Zig zag sewing machine needle | Akiyoshi Sasano | 1986-04-01 |
| 4542706 | Lower thread tension adjusting device of sewing machine | Susumu Hanyu, Kazumasa Hara | 1985-09-24 |
| 4473019 | Hem stitch presser foot | Susumu Hanyu, Kazumasa Hara, Akio Koide | 1984-09-25 |
| 4466368 | Lock stitching sewing machine with a thread tightening device | Susumu Hanyu, Kazumasa Hara | 1984-08-21 |
| 4423693 | Feed dog structure of sewing machines | Susumu Hanyu, Kazumasa Hara | 1984-01-03 |
| 4357887 | Loop catching device for lock stitching sewing machines | Kazumasa Hara | 1982-11-09 |
| 4348969 | Sewing machine with a horizontal-type loop taker | Noboru Kasuga, Kazumasa Hara | 1982-09-14 |
| 4340003 | Lock stitching sewing machine with a thread tightening device | Susumu Hanyu, Kazumasa Hara | 1982-07-20 |