LexDanaLexDanabeta
Inventor

Mitsuhisa Kawamata

Inventor
Hitachi, JP

Overview

3→
Patents
1991–1995
Patent span
Human necessities
Primary field (CPC A)

Patents· 3 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

A47Lprimary
A47LDomestic washing or cleaning75%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests25%
PatentTitleYear
5,381,584'Vacuum cleaner'19955,243,732'Vacuum cleaner with fuzzy logic control'19935,027,469'Vacuum cleaner'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1995Patents assigned to HITACHI LTD (3)· patent assignee history
1991–1995Based in Hitachi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD31991–1995
Locations
LocationPatentsSpan
Hitachi, JP31991–1995