Inventor · disambiguated record
Saburo Maru
Also filed as: MARU SABURO
7 granted patents·174 citations·filing 1992–1999
88Inventor score
Files withHITACHI LTD7
Top patents by PatentIndex Score
7 records- 0192US5360290AUnderground drainage facility, vertical-shaft multi-stage adjustable vane pump, and method of running drainage pumpHITACHI LTD·Filed 1992·Granted Nov 1, 1994·44 cites·19 claims
- 0279US5487621ALarge-depth underground drainage facility and method of running sameHITACHI LTD·Filed 1994·Granted Jan 30, 1996·39 cites·6 claims
- 0378US6102618ALarge-depth underground drainage facility and method of running sameHITACHI LTD·Filed 1999·Granted Aug 15, 2000·38 cites·3 claims
- 0475US5909982ALarge-depth underground drainage facility and method of running sameHITACHI LTD·Filed 1997·Granted Jun 8, 1999·35 cites·25 claims
- 0552US5624226AUnderground drainage facility, vertical-shaft multi-stage adjustable vane pump, and method of running drainage pumpHITACHI LTD·Filed 1994·Granted Apr 29, 1997·10 cites·2 claims
- 0636US5634740ALarge-depth underground drainage facility and method of running sameHITACHI LTD·Filed 1995·Granted Jun 3, 1997·5 cites·6 claims
- 0731US5733065AUnderground drainage facility, vertical-shaft multi-stage adjustable vane pump, and method of running drainage pumpHITACHI LTD·Filed 1997·Granted Mar 31, 1998·3 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →