Assignee
TOPURA KK
JP16 patents
Top patents by PatentIndex Score
US4637767AJan 20, 1987
Threaded fastener
TOPURA KK76 citations93
US5205694AApr 27, 1993
Self-tapping screw
TOPURA KK70 citations92
US6077013AJun 20, 2000
Bolt equipped with pilot
TOPURA KK36 citations89
US5249882AOct 5, 1993
Self-tapping screw
TOPURA KK46 citations88
US5203657AApr 20, 1993
Self-tapping screw
TOPURA KK30 citations88
US7938609B2May 10, 2011
Tightening structure using high-strength self-forming screws
TOPURA KK14 citations78
US7780388B2Aug 24, 2010
Tapping screw
TOPURA KK9 citations74
US9267528B2Feb 23, 2016
Tapping screw
TOPURA KK4 citations65
US4677703AJul 7, 1987
Dies for forming drilling screws
TOPURA KK4 citations55
US11795986B2Oct 24, 2023
External screw member
TOPURA KK0 citations49
US11953045B2Apr 9, 2024
Screw thread
TOPURA KK0 citations48
US12038035B2Jul 16, 2024
Threaded fastener
TOPURA KK1 citations43
US10954985B2Mar 23, 2021
External screw member
TOPURA KK0 citations42
US11162525B2Nov 2, 2021
External thread member
TOPURA KK0 citations41
US11846311B2Dec 19, 2023
External thread member
TOPURA KK0 citations38
US9752609B2Sep 5, 2017
Threaded fastener
TOPURA KK0 citations35