Inventor · disambiguated record
Seizo Hayashi
Also filed as: HAYASHI SEIZO
12 granted patents·2 pending applications·942 citations·filing 1978–2003
94Inventor score
Top patents by PatentIndex Score
14 records- 0198US6323570B1Rotary brush device and vacuum cleaner using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Nov 27, 2001·217 cites·20 claims
- 0297US6437465B1Rotary brush device and vacuum cleaner using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Aug 20, 2002·148 cites·3 claims
- 0397US6400048B1Rotary brush device and vacuum cleaner using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Jun 4, 2002·190 cites·51 claims
- 0493US5144714AVacuum cleanerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1991·Granted Sep 8, 1992·120 cites·8 claims
- 0588US6345411B1Vacuum cleanerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Feb 12, 2002·107 cites·15 claims
- 0686US6684451B2Vacuum cleanerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Feb 3, 2004·57 cites·35 claims
- 0779US4637092AVacuum cleaner with agitatorMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1985·Granted Jan 20, 1987·38 cites·17 claims
- 0858USD363163STool caddy for a portable applianceMATSUSHITA FLOOR CARE COMPANY·Filed 1993·Granted Oct 17, 1995·10 cites·1 claims
- 0957US4217674AUpright vacuum cleanerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1978·Granted Aug 19, 1980·19 cites·10 claims
- 1051US4977640AFloor nozzle for vacuum cleanerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1989·Granted Dec 18, 1990·17 cites·11 claims
- 1149US4746092AApparatus for supporting an electric blower of a vacuum cleanerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1987·Granted May 24, 1988·16 cites·7 claims
- 1241US2004088820A1Vacuum cleanerFiled 2003·Application pending·0 cites
- 1341US2003172490A1Vacuum cleanerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Application pending·0 cites
- 1430US4716620AVacuum cleanerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1987·Granted Jan 5, 1988·3 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →