Inventor · disambiguated record
Masayoshi Hachiwaka
Also filed as: HACHIWAKA MASAYOSHI
7 granted patents·2 pending applications·51 citations·filing 1990–2009
78Inventor score
Files withMITSUBISHI CABLE IND LTD3OOIZUMI HARUO3MITSUBISHI HEAVY IND LTD1NAGASE CHEMTEX CORP1TANAKA MASATOSHI1
Top patents by PatentIndex Score
9 records- 0168US5852694AHigh power fiber optic connectorMITSUBISHI CABLE IND LTD·Filed 1997·Granted Dec 22, 1998·35 cites·2 claims
- 0254US8606065B2Optical fiber and method for fabricating the sameOOIZUMI HARUO·Filed 2009·Granted Dec 10, 2013·0 cites·9 claims
- 0347US5177808AOptical energy beam transmission path structureMITSUBISHI HEAVY IND LTD·Filed 1990·Granted Jan 5, 1993·15 cites·19 claims
- 0445US8554036B2Graded index multimode optical fiberOOIZUMI HARUO·Filed 2009·Granted Oct 8, 2013·1 cites·3 claims
- 0544US7477821B2Sealing composition and production method of optical fiber having air holes in the inside using the compositionNAGASE CHEMTEX CORP·Filed 2005·Granted Jan 13, 2009·0 cites·13 claims
- 0642US2011176767A1Optical fiber connection structureMITSUBISHI CABLE IND LTD·Filed 2009·Application pending·0 cites
- 0740US8111962B2Optical fiber connection structure and single-mode fiberTANAKA MASATOSHI·Filed 2009·Granted Feb 7, 2012·0 cites·6 claims
- 0836US2006062533A1Photonic crystal fiber, method of manufacturing the crystal fiber, and method of connecting the fiberMITSUBISHI CABLE IND LTD·Filed 2003·Application pending·0 cites
- 0934US8396340B2Optical fiber and method for fabricating the sameOOIZUMI HARUO·Filed 2008·Granted Mar 12, 2013·0 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when Masayoshi Hachiwaka files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →