Inventor · disambiguated record
Siro Sugiyama
Also filed as: SUGIYAMA SIRO
6 granted patents·206 citations·filing 1987–2000
86Inventor score
Top patents by PatentIndex Score
6 records- 0187US6615942B2Swivel type working vehicleKUBOTA KK·Filed 2000·Granted Sep 9, 2003·47 cites·21 claims
- 0287USD312468SPower shovelKUBOTA LTD·Filed 1987·Granted Nov 27, 1990·31 cites·1 claims
- 0386US5108253AHydraulic piping structure for a backhoeKUBOTA LTD·Filed 1990·Granted Apr 28, 1992·64 cites·6 claims
- 0455US5433249AHydraulic pilot valveKUBOTA KK·Filed 1994·Granted Jul 18, 1995·14 cites·5 claims
- 0552US5904444APropelling apparatus for underground propelling construction workKUBOTA KK·Filed 1996·Granted May 18, 1999·35 cites·20 claims
- 0635US5878825AUnderground propelling methodKUBOTA KK·Filed 1997·Granted Mar 9, 1999·15 cites·18 claims
Join the waitlist — get patent alerts
Get an alert when Siro Sugiyama 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 →