Inventor · disambiguated record
Shigeo Niwa
Also filed as: NIWA SHIGEO
18 granted patents·1,112 citations·filing 1982–1996
96Inventor score
Files withMITSUBISHI MINING & CEMENT CO6NGK SPARK PLUG CO4AISIN SEIKI3OHTSUKA TORAO1PFIZER HOSPITAL PROD1
Top patents by PatentIndex Score
18 records- 0189US4429691AMethod for filling in defects or hollow portions of bonesMITSUBISHI MINING & CEMENT CO·Filed 1982·Granted Feb 7, 1984·140 cites·16 claims
- 0288US4497075AFiller for filling in defects or hollow portions of bonesMITSUBISHI MINING & CEMENT CO·Filed 1982·Granted Feb 5, 1985·141 cites·12 claims
- 0385US4613577AFiber glass mainly composed of calcium phosphateMITSUBISHI MINING & CEMENT CO·Filed 1984·Granted Sep 23, 1986·33 cites·12 claims
- 0478US5213112ATension meter for orthopedic surgeryPFIZER HOSPITAL PROD·Filed 1992·Granted May 25, 1993·295 cites·8 claims
- 0577US4735857AFiber glass mainly composed of calcium phosphateMITSUBISHI MINING & CEMENT CO·Filed 1986·Granted Apr 5, 1988·27 cites·16 claims
- 0671US4820573AFiber glass mainly composed of calcium phosphateMITSUBISHI MINING & CEMENT CO·Filed 1987·Granted Apr 11, 1989·26 cites·5 claims
- 0770US4910473ADigitally temperature-compensated oscillatorSEIKO ELECTRONIC COMPONENTS·Filed 1988·Granted Mar 20, 1990·21 cites·7 claims
- 0866US5007932AArtificial bone jointNGK SPARK PLUG CO·Filed 1989·Granted Apr 16, 1991·76 cites·23 claims
- 0959US4994085AArtificial stem unit for coxa with setting guideAISIN SEIKI·Filed 1989·Granted Feb 19, 1991·54 cites·4 claims
- 1056US4944758AArtificial finger jointNGK SPARK PLUG CO·Filed 1988·Granted Jul 31, 1990·50 cites·10 claims
- 1154US5266248AMethod of producing hydroxylapatite base porous beads filler for an organismOHTSUKA TORAO·Filed 1992·Granted Nov 30, 1993·48 cites·7 claims
- 1247US4685919AArtificial jointNGK SPARK PLUG CO·Filed 1986·Granted Aug 11, 1987·39 cites·10 claims
- 1346US5013323AImplant material for replacing hard tissue of living bodyMITSUBISHI MINING & CEMENT CO·Filed 1987·Granted May 7, 1991·30 cites·23 claims
- 1445US4636218AArtificial articulationNGK SPARK PLUG CO·Filed 1983·Granted Jan 13, 1987·24 cites·17 claims
- 1543US5665120ABiomedical material including tube-like biodegradeable nety works filled with hydroxylapatiteTOHKAI CERAMIC MATERIAL CO LTD·Filed 1996·Granted Sep 9, 1997·43 cites·14 claims
- 1642US5728395AHydroxylapatite base porous beads filler for organism and method of producing the sameFiled 1995·Granted Mar 17, 1998·25 cites·7 claims
- 1741US4610693AImplanting article molded by centrifugal dispersion and the method for producing the sameAISIN SEIKI·Filed 1984·Granted Sep 9, 1986·22 cites·12 claims
- 1834US4979958AArtificial stem for femur of coxaAISIN SEIKI·Filed 1989·Granted Dec 25, 1990·18 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Shigeo Niwa 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 →