Inventor · disambiguated record
Seiji Hagiwara
Also filed as: HAGIWARA SEIJI
8 granted patents·476 citations·filing 1993–2019
89Inventor score
Top patents by PatentIndex Score
8 records- 0187US5767810AMicrostrip antenna deviceNIPPON TELEGRAPH & TELEPHONE·Filed 1996·Granted Jun 16, 1998·103 cites·9 claims
- 0286US6343218B1Transmission power control method, mobile phone, base station, and recording mediumNTT DOCOMO INC·Filed 1999·Granted Jan 29, 2002·159 cites·42 claims
- 0385US6265935B1Amplifier for radio transmissionNIPPON TELEGRAPH & TELEPHONE·Filed 1999·Granted Jul 24, 2001·72 cites·18 claims
- 0475US5917450AAntenna device having two resonance frequenciesNIPPON TELEGRAPH & TELEPHONE·Filed 1996·Granted Jun 29, 1999·52 cites·18 claims
- 0575US5617105AAntenna equipmentNIPPON TELEGRAPH & TELEPHONE·Filed 1994·Granted Apr 1, 1997·46 cites·31 claims
- 0672US5568155AAntenna devices having double-resonance characteristicsNIPPON TELEGRAPH & TELEPHONE·Filed 1993·Granted Oct 22, 1996·44 cites·6 claims
- 0759US11356862B2Measuring method and measuring deviceNTT DOCOMO INC·Filed 2019·Granted Jun 7, 2022·0 cites·6 claims
- 0838US7088977B2Wireless communication apparatus and wireless communication methodNTT DOCOMO INC·Filed 2001·Granted Aug 8, 2006·0 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →