Assignee
ALPHA CORP
JP100 patents
Top patents by PatentIndex Score
US6010064AJan 4, 2000
Commodity distributing locker apparatus
ALPHA CORP138 citations96
US5640864AJun 24, 1997
Cylinder lock resistible against breaking
ALPHA CORP58 citations95
US5768925AJun 23, 1998
Electronic-component-integrated key
ALPHA CORP78 citations94
US5428978AJul 4, 1995
Cylinder lock device resistible against unauthorized unlocking
ALPHA CORP64 citations94
US5265453ANov 30, 1993
Cylinder lock
ALPHA CORP98 citations94
US7111880B2Sep 26, 2006
Outside handle assembly of automobile
ALPHA CORP48 citations93
US8001814B2Aug 23, 2011
Steering lock apparatus
ALPHA CORP23 citations92
US7230196B2Jun 12, 2007
Lighted switch device
ALPHA CORP98 citations91
US5402660AApr 4, 1995
Axial tumbler cylinder lock and key
ALPHA CORP23 citations91
US6968717B2Nov 29, 2005
Cylinder lock
ALPHA CORP42 citations89
US6604392B1Aug 12, 2003
Cylinder lock device
ALPHA CORP21 citations89
US6308543B1Oct 30, 2001
Key plate and method for manufacturing the same
ALPHA CORP25 citations89
US5896762AApr 27, 1999
Theft preventing device
ALPHA CORP27 citations89
US7065439B2Jun 20, 2006
Vehicle door locking and unlocking system
ALPHA CORP29 citations88
US5570599ANov 5, 1996
Steering lock device
ALPHA CORP24 citations88
US7104575B2Sep 12, 2006
Inside door handle device of automobile
ALPHA CORP22 citations87
USD456689SMay 7, 2002
Portion of lock
ALPHA CORP19 citations87
US5985785ANov 16, 1999
Composition including a catalytic metal-polymer complex and a method of manufacturing a laminate preform or a laminate which is catalytically effective for subsequent electroless metallization thereof
ALPHA CORP32 citations87
US5285667AFeb 15, 1994
Cylinder lock
ALPHA CORP27 citations86
US8033148B2Oct 11, 2011
Electric steering lock apparatus
ALPHA CORP12 citations84
US7437803B2Oct 21, 2008
Grip handle type door handle apparatus
ALPHA CORP16 citations84
US7810363B2Oct 12, 2010
Electric steering locking apparatus
ALPHA CORP14 citations83
US7412858B2Aug 19, 2008
Electric steering lock device
ALPHA CORP13 citations83
US9193309B2Nov 24, 2015
Vehicular handle
ALPHA CORP9 citations82
US7421869B2Sep 9, 2008
Cylinder lock device
ALPHA CORP9 citations82
US7242276B2Jul 10, 2007
Method and system for unlocking doorway
ALPHA CORP10 citations82
USD462005SAug 27, 2002
Housing portion of fingerprint identification lock
ALPHA CORP16 citations79
US7819444B2Oct 26, 2010
Handle apparatus
ALPHA CORP17 citations77
US7596976B2Oct 6, 2009
Electric steering lock device
ALPHA CORP7 citations73
US12241290B2Mar 4, 2025
Handle device for vehicle
ALPHA CORP2 citations72
US11879276B2Jan 23, 2024
Door handle device for vehicle
ALPHA CORP3 citations72
US11840869B2Dec 12, 2023
Outside handle device for vehicle
ALPHA CORP2 citations72
US10119307B2Nov 6, 2018
Vehicle handle device
ALPHA CORP6 citations72
US5402662AApr 4, 1995
Cylindrical lock and key therefor
ALPHA CORP19 citations72
US10954697B2Mar 23, 2021
Handle device of vehicle
ALPHA CORP2 citations71
US9827949B2Nov 28, 2017
Electric steering lock device
ALPHA CORP5 citations71
US9803402B2Oct 31, 2017
Vehicular handle device
ALPHA CORP2 citations71
US5701988ADec 30, 1997
Coin-operated locker
ALPHA CORP11 citations71
US5197312AMar 30, 1993
Cable connector for steering lock device
ALPHA CORP16 citations71
US11926196B2Mar 12, 2024
Handle device for vehicle
ALPHA CORP2 citations70
US10087657B2Oct 2, 2018
Handle device for vehicle
ALPHA CORP2 citations70
US5214332AMay 25, 1993
Electric motor
ALPHA CORP17 citations70
US9909350B2Mar 6, 2018
Vehicular reflective optical sensor
ALPHA CORP3 citations69
US5419954AMay 30, 1995
Composition including a catalytic metal-polymer complex and a method of manufacturing a laminate preform or a laminate which is catalytically effective for subsequent electroless metallization thereof
ALPHA CORP9 citations68
USD638683SMay 31, 2011
Door handle for automobile
ALPHA CORP6 citations67
US11643854B2May 9, 2023
Vehicle handle device and rotation operation clip
ALPHA CORP2 citations65
US11384574B2Jul 12, 2022
Vehicle handle device
ALPHA CORP2 citations65
US4525427AJun 25, 1985
Polyester primer composition and method
ALPHA CORP8 citations65
US11628804B2Apr 18, 2023
Steering lock device
ALPHA CORP0 citations63
US7716959B2May 18, 2010
Steering lock device
ALPHA CORP3 citations63
Showing the top 50 of 100 patents by PatentIndex Score.