Inventor
HARA KAZUMASA
JP32 patents
⚠️ This page may combine multiple inventors who share the name “HARA KAZUMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
JANOME SEWING MACHINE CO LTD
31 patentsUS5775240AJul 7, 1998
Sewing machine capable of embroidery stitching, and embroidery data producing device therefor
JANOME SEWING MACHINE CO LTD23 citations92
US4793273ADec 27, 1988
Automatic thread tension device for a sewing machine
JANOME SEWING MACHINE CO LTD24 citations82
US4267786AMay 19, 1981
Lock stitching and overlock stitching sewing machine
JANOME SEWING MACHINE CO LTD18 citations82
US4702185AOct 27, 1987
Sewing machine with an automatic thread tension device
JANOME SEWING MACHINE CO LTD22 citations79
US4606289AAug 19, 1986
Sewing thread cutting device
JANOME SEWING MACHINE CO LTD10 citations74
US4579615AApr 1, 1986
Method and a device for connecting threads of a sewing machine
JANOME SEWING MACHINE CO LTD13 citations74
US4565143AJan 21, 1986
Method of automatically adjusting thread tension in a sewing machine
JANOME SEWING MACHINE CO LTD7 citations74
US4473019ASep 25, 1984
Hem stitch presser foot
JANOME SEWING MACHINE CO LTD9 citations74
US4357887ANov 9, 1982
Loop catching device for lock stitching sewing machines
JANOME SEWING MACHINE CO LTD8 citations74
US4343250AAug 10, 1982
Lock stitching and over-lock stitching sewing machine
JANOME SEWING MACHINE CO LTD7 citations74
US4340003AJul 20, 1982
Lock stitching sewing machine with a thread tightening device
JANOME SEWING MACHINE CO LTD11 citations74
US5022335AJun 11, 1991
Upper thread supplying device in sewing machine
JANOME SEWING MACHINE CO LTD9 citations73
US4949657AAug 21, 1990
Sewing machine with a device for amending thread tightening by needle positions
JANOME SEWING MACHINE CO LTD13 citations73
US4704975ANov 10, 1987
Upper and lower thread tension devices for sewing machine
JANOME SEWING MACHINE CO LTD9 citations73
US4690083ASep 1, 1987
Automatic upper thread tension control for a sewing machine
JANOME SEWING MACHINE CO LTD16 citations73
US4638751AJan 27, 1987
Sewing machine with a device for setting thread tension
JANOME SEWING MACHINE CO LTD9 citations73
US4967679ANov 6, 1990
Automatic thread tension control sewing machine
JANOME SEWING MACHINE CO LTD19 citations72
US4960062AOct 2, 1990
Sewing machine automatic thread tension device with thread elongation detector
JANOME SEWING MACHINE CO LTD8 citations70
US4700644AOct 20, 1987
Sewing machine having an automatic lower thread tension device
JANOME SEWING MACHINE CO LTD4 citations63
US4542706ASep 24, 1985
Lower thread tension adjusting device of sewing machine
JANOME SEWING MACHINE CO LTD5 citations63
US4466368AAug 21, 1984
Lock stitching sewing machine with a thread tightening device
JANOME SEWING MACHINE CO LTD3 citations63
US4423693AJan 3, 1984
Feed dog structure of sewing machines
JANOME SEWING MACHINE CO LTD4 citations63
US5003896AApr 2, 1991
Device for guiding a lower thread in a sewing machine
JANOME SEWING MACHINE CO LTD2 citations62
US4998491AMar 12, 1991
Method of automatically controlling upper thread tension in a sewing machine
JANOME SEWING MACHINE CO LTD4 citations62
US4693193ASep 15, 1987
Device of guiding drawing-out of a lower thread from a horizontal bobbin carrier of a sewing machine
JANOME SEWING MACHINE CO LTD5 citations62
US4920903AMay 1, 1990
Device for adjusting a lower thread in a sewing machine
JANOME SEWING MACHINE CO LTD2 citations61
US4662292AMay 5, 1987
Thread loop taker device of a zigzag sewing machine
JANOME SEWING MACHINE CO LTD5 citations60
US4892048AJan 9, 1990
Automatic thread tightening device for a sewing machine
JANOME SEWING MACHINE CO LTD5 citations57
US4690082ASep 1, 1987
Device for regulating upper thread tension of a sewing machine
JANOME SEWING MACHINE CO LTD1 citations52
US4724784AFeb 16, 1988
Device for changing a lower thread running path for a zigzag sewing machine
JANOME SEWING MACHINE CO LTD0 citations45
US4348969ASep 14, 1982
Sewing machine with a horizontal-type loop taker
JANOME SEWING MACHINE CO LTD0 citations41