Inventor · disambiguated record
Baldwin Zahn
Also filed as: ZAHN BALDWIN · ZAHN BALDWIN E
6 granted patents·222 citations·filing 1993–2018
85Inventor score
Technology areasE21B
Top patents by PatentIndex Score
6 records- 0190US10053934B2Floor mounted racking arm for handling drill pipeNAT OILWELL VARCO LP·Filed 2014·Granted Aug 21, 2018·34 cites·31 claims
- 0288US7246983B2Pipe racking systemNAT OILWELL LP·Filed 2005·Granted Jul 24, 2007·62 cites·38 claims
- 0381US5423390APipe racker assemblyDRECO INC·Filed 1993·Granted Jun 13, 1995·82 cites·40 claims
- 0468US7040411B2BOP handling systemNAT OILWELL LP·Filed 2004·Granted May 9, 2006·42 cites·24 claims
- 0558US8827008B2Inflatable restraint systemHANKINS JOHN BENJAMIN·Filed 2011·Granted Sep 9, 2014·2 cites·25 claims
- 0651US10526854B2Methods for handling pipeNAT OILWELL VARCO LP·Filed 2018·Granted Jan 7, 2020·0 cites·23 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →