Inventor · disambiguated record
John J. Langenfeld
Also filed as: LANGENFELD JOHN J
2 granted patents·2 pending applications·30 citations·filing 2022–2024
56Inventor score
Technology areasG01N
Files withMARATHON PETROLEUM CO LP4
Top patents by PatentIndex Score
4 records- 0189US11467172B1Dispensing assembly to facilitate dispensing of fluid from a sample cylinder and related methodsMARATHON PETROLEUM CO LP·Filed 2022·Granted Oct 11, 2022·30 cites·26 claims
- 0270US2025060288A1Systems, apparatuses, and methods for sample cylinder inspection, pressurization, and sample disposalMARATHON PETROLEUM CO LP·Filed 2024·Application pending·0 cites
- 0369US12306076B2Systems, apparatuses, and methods for sample cylinder inspection, pressurization, and sample disposalMARATHON PETROLEUM CO LP·Filed 2024·Granted May 20, 2025·0 cites·30 claims
- 0465US2023087063A1Dispensing assembly to facilitate dispensing of fluid from a sample cylinder and related methodsMARATHON PETROLEUM CO LP·Filed 2022·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →