Inventor · disambiguated record
Shigemi Naganawa
Also filed as: NAGANAWA Shigemi
4 granted patents·1 pending application·1 citations·filing 2016–2021
56Inventor score
Top patents by PatentIndex Score
5 records- 0158US11230890B2Well drilling bit and well drilling method using the sameUNIV TOKYO·Filed 2017·Granted Jan 25, 2022·1 cites·16 claims
- 0255US11970654B2Drilling fluid, drilling method, and drilling fluid additiveUNIV AKITA·Filed 2020·Granted Apr 30, 2024·0 cites·14 claims
- 0349US11326433B2Fracturing method and depressurizing device used for sameAIST·Filed 2019·Granted May 10, 2022·0 cites·8 claims
- 0448US2024026205A1Drilling fluid, drilling method, and drilling fluid additiveUNIV AKITA·Filed 2021·Application pending·0 cites
- 0532US10801299B2PackerTEISEKI DRILLING CO LTD·Filed 2016·Granted Oct 13, 2020·0 cites·10 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →