Inventor · disambiguated record
Kazumasa Hara
Also filed as: HARA KAZUMASA
32 granted patents·280 citations·filing 1977–1996
97Inventor score
Top patents by PatentIndex Score
32 records- 0193US4793273AAutomatic thread tension device for a sewing machineJANOME SEWING MACHINE CO LTD·Filed 1987·Granted Dec 27, 1988·24 cites·9 claims
- 0292US4267786ALock stitching and overlock stitching sewing machineJANOME SEWING MACHINE CO LTD·Filed 1977·Granted May 19, 1981·18 cites·31 claims
- 0389US5775240ASewing machine capable of embroidery stitching, and embroidery data producing device thereforJANOME SEWING MACHINE CO LTD·Filed 1996·Granted Jul 7, 1998·23 cites·19 claims
- 0488US4967679AAutomatic thread tension control sewing machineJANOME SEWING MACHINE CO LTD·Filed 1989·Granted Nov 6, 1990·19 cites·2 claims
- 0588US4702185ASewing machine with an automatic thread tension deviceJANOME SEWING MACHINE CO LTD·Filed 1986·Granted Oct 27, 1987·22 cites·6 claims
- 0685US4690083AAutomatic upper thread tension control for a sewing machineJANOME SEWING MACHINE CO LTD·Filed 1985·Granted Sep 1, 1987·16 cites·8 claims
- 0782US4340003ALock stitching sewing machine with a thread tightening deviceJANOME SEWING MACHINE CO LTD·Filed 1980·Granted Jul 20, 1982·11 cites·7 claims
- 0876US4606289ASewing thread cutting deviceJANOME SEWING MACHINE CO LTD·Filed 1982·Granted Aug 19, 1986·10 cites·11 claims
- 0969US5022335AUpper thread supplying device in sewing machineJANOME SEWING MACHINE CO LTD·Filed 1989·Granted Jun 11, 1991·9 cites·6 claims
- 1069US4638751ASewing machine with a device for setting thread tensionJANOME SEWING MACHINE CO LTD·Filed 1985·Granted Jan 27, 1987·9 cites·5 claims
- 1169US4357887ALoop catching device for lock stitching sewing machinesJANOME SEWING MACHINE CO LTD·Filed 1980·Granted Nov 9, 1982·8 cites·3 claims
- 1269US4343250ALock stitching and over-lock stitching sewing machineJANOME SEWING MACHINE CO LTD·Filed 1980·Granted Aug 10, 1982·7 cites·2 claims
- 1368US4704975AUpper and lower thread tension devices for sewing machineJANOME SEWING MACHINE CO LTD·Filed 1986·Granted Nov 10, 1987·9 cites·5 claims
- 1466US4949657ASewing machine with a device for amending thread tightening by needle positionsJANOME SEWING MACHINE CO LTD·Filed 1988·Granted Aug 21, 1990·13 cites·4 claims
- 1566US4565143AMethod of automatically adjusting thread tension in a sewing machineJANOME SEWING MACHINE CO LTD·Filed 1984·Granted Jan 21, 1986·7 cites·4 claims
- 1663US4579615AMethod and a device for connecting threads of a sewing machineJANOME SEWING MACHINE CO LTD·Filed 1984·Granted Apr 1, 1986·13 cites·14 claims
- 1762US4960062ASewing machine automatic thread tension device with thread elongation detectorJANOME SEWING MACHINE CO LTD·Filed 1988·Granted Oct 2, 1990·8 cites·3 claims
- 1861US4473019AHem stitch presser footJANOME SEWING MACHINE CO LTD·Filed 1982·Granted Sep 25, 1984·9 cites·4 claims
- 1957US4542706ALower thread tension adjusting device of sewing machineJANOME SEWING MACHINE CO LTD·Filed 1983·Granted Sep 24, 1985·5 cites·2 claims
- 2056US4662292AThread loop taker device of a zigzag sewing machineJANOME SEWING MACHINE CO LTD·Filed 1985·Granted May 5, 1987·5 cites·4 claims
- 2152US4693193ADevice of guiding drawing-out of a lower thread from a horizontal bobbin carrier of a sewing machineJANOME SEWING MACHINE CO LTD·Filed 1985·Granted Sep 15, 1987·5 cites·8 claims
- 2250US4423693AFeed dog structure of sewing machinesJANOME SEWING MACHINE CO LTD·Filed 1981·Granted Jan 3, 1984·4 cites·3 claims
- 2349US4892048AAutomatic thread tightening device for a sewing machineJANOME SEWING MACHINE CO LTD·Filed 1989·Granted Jan 9, 1990·5 cites·1 claims
- 2448US4926770ANeedle hole guide mechanism for zigzag sewing machineJANOME SEWING MACHINE CO LTD D·Filed 1989·Granted May 22, 1990·5 cites·3 claims
- 2547US4700644ASewing machine having an automatic lower thread tension deviceJANOME SEWING MACHINE CO LTD·Filed 1986·Granted Oct 20, 1987·4 cites·7 claims
- 2647US4466368ALock stitching sewing machine with a thread tightening deviceJANOME SEWING MACHINE CO LTD·Filed 1982·Granted Aug 21, 1984·3 cites·10 claims
- 2740US4998491AMethod of automatically controlling upper thread tension in a sewing machineJANOME SEWING MACHINE CO LTD·Filed 1988·Granted Mar 12, 1991·4 cites·1 claims
- 2839US5003896ADevice for guiding a lower thread in a sewing machineJANOME SEWING MACHINE CO LTD·Filed 1988·Granted Apr 2, 1991·2 cites·1 claims
- 2937US4920903ADevice for adjusting a lower thread in a sewing machineJANOME SEWING MACHINE CO LTD·Filed 1988·Granted May 1, 1990·2 cites·4 claims
- 3032US4690082ADevice for regulating upper thread tension of a sewing machineJANOME SEWING MACHINE CO LTD·Filed 1985·Granted Sep 1, 1987·1 cites·7 claims
- 3130US4348969ASewing machine with a horizontal-type loop takerJANOME SEWING MACHINE CO LTD·Filed 1980·Granted Sep 14, 1982·0 cites·1 claims
- 3224US4724784ADevice for changing a lower thread running path for a zigzag sewing machineJANOME SEWING MACHINE CO LTD·Filed 1986·Granted Feb 16, 1988·0 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when Kazumasa Hara files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →