Inventor · disambiguated record
J. Nigel Ellis
Also filed as: ELLIS J N · ELLIS J NIGEL
14 granted patents·1 pending application·303 citations·filing 1981–2015
93Inventor score
Top patents by PatentIndex Score
15 records- 0193US9540875B2Safety device for laddersELLIS J NIGEL·Filed 2015·Granted Jan 10, 2017·23 cites·4 claims
- 0284US4458781AClimbing aid and safety descent deviceELLIS J NIGEL·Filed 1982·Granted Jul 10, 1984·51 cites·18 claims
- 0380US4538703AClimbing aid and safety descent systemRES & TRADING CORP·Filed 1984·Granted Sep 3, 1985·54 cites·53 claims
- 0476US6619428B2Walk-through ladderFiled 2001·Granted Sep 16, 2003·21 cites·16 claims
- 0576US6347685B1Walk-through ladderFiled 2000·Granted Feb 19, 2002·24 cites·16 claims
- 0675US5400868AShock indicator for use on safety cablesRES AND TRADING CORP·Filed 1993·Granted Mar 28, 1995·33 cites·5 claims
- 0773US8251179B2Portable safety ladder assemblyANDERSON JAMES T·Filed 2011·Granted Aug 28, 2012·5 cites·19 claims
- 0870US8316611B2Portable safety skylight replacement assemblyELLIS J NIGEL·Filed 2012·Granted Nov 27, 2012·7 cites·20 claims
- 0964US6095283AWalk-through ladderFiled 1999·Granted Aug 1, 2000·33 cites·25 claims
- 1061US5433290ASafety line shock absorberRES & TRADING CORP·Filed 1994·Granted Jul 18, 1995·36 cites·17 claims
- 1157US8122673B2Portable safety skylight replacement assemblyELLIS J NIGEL·Filed 2008·Granted Feb 28, 2012·1 cites·13 claims
- 1256US7527461B2Safety rail assemblyELLIS J NIGEL·Filed 2006·Granted May 5, 2009·2 cites·19 claims
- 1352US2009206314A1Safety rail assemblyELLIS J NIGEL·Filed 2009·Application pending·0 cites
- 1444USD760917SLadder safety rail setELLIS J NIGEL·Filed 2015·Granted Jul 5, 2016·4 cites·1 claims
- 1544US4392555AFall protection deviceELLIS J NIGEL·Filed 1981·Granted Jul 12, 1983·9 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →