LexDanaLexDanabeta
Inventor

Yasukazu Ataka

Inventor
Ibaragi, JP

Overview

4→
Patents
1984–1990
Patent span
Human necessities
Primary field (CPC A)

Patents· 4 as inventor

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

A47Lprimary
A47LDomestic washing or cleaning67%
B01DSeparation17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
PatentTitleYear
4,939,810'Portable vacuum cleaner'19904,905,342'Portable vacuum cleaner'19904,704,765'Portable vacuum cleaner'19874,426,211'Vacuum cleaner with dust disposal'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–1990Patents assigned to SHARP KK (4)· patent assignee history
1984Based in Ibaraki, JP· patent location history
1987–1990Based in Ibaragi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SHARP KK41984–1990
Locations
LocationPatentsSpan
Ibaragi, JP31987–1990
Ibaraki, JP11984