Inventor · disambiguated record
Naomitsu Umemura
Also filed as: UMEMURA NAOMITSU
4 granted patents·2 pending applications·69 citations·filing 1986–2006
73Inventor score
Files withASAHI GLASS CO LTD6
Top patents by PatentIndex Score
6 records- 0193US6580674B1Phase shifter and optical head device mounted with the sameASAHI GLASS CO LTD·Filed 2000·Granted Jun 17, 2003·60 cites·8 claims
- 0274US6917576B2Retarder and optical head device installing the sameASAHI GLASS CO LTD·Filed 2003·Granted Jul 12, 2005·8 cites·10 claims
- 0341US2003123371A1Retarder and optical head device installing the sameASAHI GLASS CO LTD·Filed 2002·Application pending·0 cites
- 0439US2006193235A1Diffraction element and optical head deviceASAHI GLASS CO LTD·Filed 2006·Application pending·0 cites
- 0529US5142254AUltrasonic delay line device with an adjusting circuit for adjusting delay time, a comb-shaped filter using the ultrasonic delay line device and a method of adjusting delay timeASAHI GLASS CO LTD·Filed 1990·Granted Aug 25, 1992·1 cites·8 claims
- 0619US4733204AUltrasonic-wave delay elementASAHI GLASS CO LTD·Filed 1986·Granted Mar 22, 1988·0 cites·6 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →