Inventor · disambiguated record
Katsuo Hiratsuka
Also filed as: HIRATSUKA KATSUO
8 granted patents·48 citations·filing 1989–1995
83Inventor score
Technology areasD05B
Top patents by PatentIndex Score
8 records- 0187US5477795AThread trimming device for a lockstitch bar tacking sewing machineSINGER CO NV·Filed 1994·Granted Dec 26, 1995·22 cites·2 claims
- 0277US5481995ABar tacking stitch patternSINGER CO NV·Filed 1993·Granted Jan 9, 1996·14 cites·1 claims
- 0347US5609115AButtonhole closing device for lockstitch bar tacking sewing machineSINGER CO NV·Filed 1995·Granted Mar 11, 1997·5 cites·1 claims
- 0445US5046437ADevice in a button sewing machine for maintaining looseness in needle thread while preventing the thread from being pulled out of the sewing needleSSMC INC·Filed 1989·Granted Sep 10, 1991·4 cites·1 claims
- 0534US5010832AQuick feed drive unit having an electromagnetic clutch, a worm, worm wheel, and pattern wheel for feeding a sewn cloth in a perforating sewing machineSSMC INC·Filed 1989·Granted Apr 30, 1991·1 cites·2 claims
- 0633US5007356ACutter actuator of a button perforating sewing machineSSMC INC·Filed 1989·Granted Apr 16, 1991·1 cites·4 claims
- 0729US5022334APresser bar lifter in a button perforating sewing machineSSMC INC·Filed 1989·Granted Jun 11, 1991·0 cites·4 claims
- 0829US4967678ASpeed controller for controlling revolution speed of upper shaft of cycle sewing machineSSMC INC·Filed 1989·Granted Nov 6, 1990·1 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →