Inventor · disambiguated record
Yoshimasa Hayashi
Also filed as: GOTO KENJI · HAYASHI YOSHIMASA · NAGUMO SHIN-ICHI · NAKAJIMA YASUO
132 granted patents·2 pending applications·1,928 citations·filing 1974–2011
99Inventor score
Top patents by PatentIndex Score
134 records- 0194US4205040AExposed aggregate finishing method for concreteDAICEL LTD·Filed 1975·Granted May 27, 1980·51 cites·3 claims
- 0293US4148352AMethod of preparing an exhaust port arrangement of a cylinder headNISSAN MOTOR·Filed 1976·Granted Apr 10, 1979·41 cites·1 claims
- 0392US4515124AEngine control systemNISSAN MOTOR·Filed 1983·Granted May 7, 1985·36 cites·10 claims
- 0492US4106471AInternal combustion engine system with an air-fuel mixture shut off meansNISSAN MOTOR·Filed 1976·Granted Aug 15, 1978·40 cites·12 claims
- 0592US4077458ACore and method for casting cylinder head with exhaust portNISSAN MOTOR·Filed 1976·Granted Mar 7, 1978·34 cites·9 claims
- 0690US4598687AIntercooler for supercharged internal combustion engineNISSAN MOTOR·Filed 1984·Granted Jul 8, 1986·42 cites·7 claims
- 0789US4463721AVibration suppression system for diesel engineNISSAN MOTOR·Filed 1983·Granted Aug 7, 1984·31 cites·14 claims
- 0888US4416350AMufflerNISSAN MOTOR·Filed 1982·Granted Nov 22, 1983·57 cites·6 claims
- 0988US4415059AMufflerNISSAN MOTOR·Filed 1982·Granted Nov 15, 1983·59 cites·7 claims
- 1088US4033308AExhaust gas recirculation control systemNISSAN MOTOR·Filed 1975·Granted Jul 5, 1977·29 cites·12 claims
- 1186US4597367AEngine valve and method of producing the sameNISSAN MOTOR·Filed 1983·Granted Jul 1, 1986·33 cites·14 claims
- 1286US4480609AFront cover of automotive engineNISSAN MOTOR·Filed 1981·Granted Nov 6, 1984·41 cites·7 claims
- 1386US3938330AExhaust manifold with sluice valveNISSAN MOTOR·Filed 1974·Granted Feb 17, 1976·39 cites·3 claims
- 1484US4049874AProcess for producing an architectural precast concrete panelFUJIKURA KASEI KK·Filed 1976·Granted Sep 20, 1977·40 cites·8 claims
- 1583US4177640AInternal combustion engine systemNISSAN MOTOR·Filed 1977·Granted Dec 11, 1979·33 cites·17 claims
- 1682US4486157AReciprocating compressorNISSAN MOTOR·Filed 1982·Granted Dec 4, 1984·30 cites·9 claims
- 1782US4213440ALow-noise-level reciprocating piston engineNISSAN MOTOR·Filed 1978·Granted Jul 22, 1980·32 cites·19 claims
- 1881US4114643AValve operating mechanism of internal combustion engineNISSAN MOTOR·Filed 1977·Granted Sep 19, 1978·31 cites·5 claims
- 1980US4182289AVariable valve timing system for internal combustion engineNISSAN MOTOR·Filed 1976·Granted Jan 8, 1980·29 cites·7 claims
- 2079US5592134AEMI filter with a ceramic material having a chemical reaction inhibiting componentMITSUBISHI MATERIALS CORP·Filed 1995·Granted Jan 7, 1997·36 cites·12 claims
- 2178US4198942ADual spark plug ignition engine with EGR systemNISSAN MOTOR·Filed 1977·Granted Apr 22, 1980·14 cites·9 claims
- 2278US4111165AValve operating mechanism of internal combustion engineNISSAN MOTOR·Filed 1976·Granted Sep 5, 1978·30 cites·20 claims
- 2377US4563983AIntercooler arrangement for supercharged internal combustion engineNISSAN MOTOR·Filed 1985·Granted Jan 14, 1986·34 cites·10 claims
- 2477US4041914AExhaust gas recirculation system with control apparatus for exhaust gas flow control valveNISSAN MOTOR·Filed 1975·Granted Aug 16, 1977·17 cites·4 claims
- 2576US4350129ASpark-ignition internal combustion engine capable of preventing noxious gas emissionsNISSAN MOTOR·Filed 1978·Granted Sep 21, 1982·27 cites·19 claims
- 2673US4648357ACooling system for automotive engine or the likeNISSAN MOTOR·Filed 1986·Granted Mar 10, 1987·27 cites·17 claims
- 2773US4545335ACooling system for automotive engine or the likeNISSAN MOTOR·Filed 1984·Granted Oct 8, 1985·23 cites·20 claims
- 2873US4467754AAutomotive internal combustion engineNISSAN MOTOR·Filed 1981·Granted Aug 28, 1984·24 cites·9 claims
- 2973US4245595AInternal combustion engine for motor vehiclesNISSAN MOTOR·Filed 1978·Granted Jan 20, 1981·23 cites·22 claims
- 3073US4108132AInternal combustion engine having an improved inlet valve arrangementNISSAN MOTOR·Filed 1976·Granted Aug 22, 1978·22 cites·7 claims
- 3172US4438734AOverhead camshaft engineNISSAN MOTOR·Filed 1982·Granted Mar 27, 1984·22 cites·9 claims
- 3271US4570585ALight metal cylinder head with valve seat insertNISSAN MOTOR·Filed 1983·Granted Feb 18, 1986·22 cites·1 claims
- 3371US4230087ALow-noise-level internal combustion engineNISSAN MOTOR·Filed 1978·Granted Oct 28, 1980·21 cites·11 claims
- 3468US4218880ASpark-ignition internal combustion engineNISSAN MOTOR·Filed 1976·Granted Aug 26, 1980·17 cites·48 claims
- 3567US5674313ARubber modified asphalt type of water-proofing compositionOHBAYASHI CORP·Filed 1996·Granted Oct 7, 1997·30 cites·15 claims
- 3667US4570945APiston ring having shape of an ellipse or an elongated circleNISSAN MOTOR·Filed 1983·Granted Feb 18, 1986·20 cites·11 claims
- 3767US4150646AEGR Control system for internal combustion enginesNISSAN MOTOR·Filed 1977·Granted Apr 24, 1979·12 cites·25 claims
- 3866US4465041ACylinder block of internal combustion engineNISSAN MOTOR·Filed 1981·Granted Aug 14, 1984·19 cites·6 claims
- 3966US4033309AExhaust gas recirculation system with control apparatus for exhaust gas flow control valveNISSAN MOTOR·Filed 1975·Granted Jul 5, 1977·12 cites·7 claims
- 4064US4221203ACross-flow type internal combustion engine with a small sized exhaust gas recirculating systemNISSAN MOTOR·Filed 1978·Granted Sep 9, 1980·12 cites·4 claims
- 4163US4394850ACylinder block for automotive internal combustion engineNISSAN MOTOR·Filed 1981·Granted Jul 26, 1983·17 cites·7 claims
- 4263US4116179ADual spark-ignition internal combustion engineNISSAN MOTOR·Filed 1977·Granted Sep 26, 1978·15 cites·17 claims
- 4362US4788943ACooling system for automotive engine or the likeNISSAN MOTOR·Filed 1986·Granted Dec 6, 1988·18 cites·13 claims
- 4462US4567858ALoad responsive temperature control arrangement for internal combustion engineNISSAN MOTOR·Filed 1984·Granted Feb 4, 1986·16 cites·7 claims
- 4561US4559907ALoad responsive temperature control arrangement for internal combustion engineNISSAN MOTOR·Filed 1984·Granted Dec 24, 1985·15 cites·11 claims
- 4661US4202306AMulti-point spark ignition engine provided with exhaust recirculation circuitNISSAN MOTOR·Filed 1978·Granted May 13, 1980·14 cites·13 claims
- 4761US4020806AHydraulic valve lifter for internal combustion engineNISSAN MOTOR·Filed 1975·Granted May 3, 1977·15 cites·5 claims
- 4860US4275688ACooling system for internal combustion engineNISSAN MOTOR·Filed 1979·Granted Jun 30, 1981·15 cites·20 claims
- 4960US3963447ACatalytic reactor for exhaust gasesNISSAN MOTOR·Filed 1974·Granted Jun 15, 1976·14 cites·5 claims
- 5059US4362341ALow-noise level internal combustion engineNISSAN MOTOR·Filed 1980·Granted Dec 7, 1982·17 cites·8 claims
Showing the top 50 of 134 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Yoshimasa Hayashi 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 →