| JPH0571520A              (en)* | 1991-05-29 | 1993-03-23 | Toopura:Kk | Drilling screw | 
| US5171117A              (en)* | 1991-10-16 | 1992-12-15 | Textron Inc. | Fastener with multilobular internal recess and tool entry ramps | 
| IT1269314B              (en)* | 1994-04-14 | 1997-03-26 | Carlo Sala | SCREW AND RELATIVE SCREWING TOOL | 
| AU135737S              (en)* | 1997-12-04 | 1998-11-18 | Mampay Screw Works Ltd | A set of screws | 
| GB2390408B              (en)* | 2002-07-04 | 2005-11-23 | Eric Walker | Screw and driver therefor | 
| USD482957S1              (en)* | 2002-11-12 | 2003-12-02 | The Peelle Company | Self-tapping bolt | 
| JP4031418B2              (en)* | 2003-09-12 | 2008-01-09 | 株式会社スズキ螺子製作所 | Screw and screw driver | 
| EP1693577B1              (en)* | 2003-11-14 | 2016-03-23 | Katsuyuki Totsu | Screw with stabilized strength, combination with driver bit, and header punch for producing screw with stabilized strength | 
| US7111531B1              (en)* | 2005-04-11 | 2006-09-26 | Kabushiki Kaisha Suzuki Rashi Seisakusho | Screw and screwdriver | 
| TW200932450A              (en)* | 2007-05-15 | 2009-08-01 | Cheong Kong Chang | An improved fastener and driving tool | 
| US8347761B2              (en)* | 2007-05-21 | 2013-01-08 | Acument Intellectual Properties, Llc | Drive socket design for hold and drive fastener | 
| JP5303080B2              (en)* | 2007-06-27 | 2013-10-02 | 輝文 野地川 | Screw and driver bit | 
| JP5021599B2              (en)* | 2008-10-10 | 2012-09-12 | クラウン精密工業株式会社 | Cross groove structure for screwdriver bit fitting in screw | 
| US20110048181A1              (en)* | 2009-08-27 | 2011-03-03 | Hama Naka Shoukin Industry Co., Ltd. | Screw head recess structure and its driving tool | 
| USD646152S1              (en)* | 2010-05-19 | 2011-10-04 | Pias Sales Co., Ltd. | Tapping screw | 
| USD649446S1              (en)* | 2011-02-10 | 2011-11-29 | Katsuyuki Totsu | Screw | 
| CA2846336C              (en)* | 2011-08-25 | 2021-02-23 | Infastech Intellectual Properties Pte. Ltd. | Tapered lobular driver and fastener | 
| US10968939B2              (en)* | 2011-08-25 | 2021-04-06 | Infastech Intellectual Properties Pte. Ltd. | Tapered lobular driver and fastener | 
| DE102013105810A1              (en)* | 2013-06-05 | 2014-12-11 | Ejot Gmbh & Co. Kg | Screw with a screw head having a drive | 
| ES2864668T3              (en)* | 2013-10-10 | 2021-10-14 | Acument Intellectual Properties Llc | Punches, associated cavities, and cavity-forming methods using punches | 
| USD723910S1              (en)* | 2013-11-20 | 2015-03-10 | Katsuyuki Totsu | Screw | 
| DE102013113401A1              (en)* | 2013-12-03 | 2015-06-03 | Adolf Würth GmbH & Co. KG | Screw and drive element with chamfer | 
| EP3337644B1              (en)* | 2015-08-18 | 2021-01-27 | Infastech Intellectual Properties Pte. Ltd. | Tapered lobular driver and fastener | 
| USD817164S1              (en)* | 2016-08-19 | 2018-05-08 | Katsuyuki Totsu | Screw | 
| IT201600099434A1              (en)* | 2016-10-04 | 2018-04-04 | Fontana Fasteners R D S R L | Screw with hollow head. | 
| USD818355S1              (en)* | 2016-12-21 | 2018-05-22 | Shamrock International Fastener Llc | Head for screw or bolt | 
| US20180347611A1              (en)* | 2017-06-02 | 2018-12-06 | Superior Tool Co., Ltd. | Screw and Corresponding Punch | 
| USD892604S1              (en)* | 2018-11-08 | 2020-08-11 | Superior Tool Co., Ltd. | Screw | 
| USD888544S1              (en)* | 2019-01-28 | 2020-06-30 | National Nail Corp. | Fastener head |