Inventor
Hisanori Toyoshima
Inventor
Hitachi, JP
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A47Lprimary
A47LDomestic washing or cleaning44%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters20%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications8%
F04DNon-positive-displacement pumps4%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants4%
PatentTitleYear
5,381,584'Vacuum cleaner'19955,294,872'Method and apparatus for operating vacuum cleaner'19945,243,732'Vacuum cleaner with fuzzy logic control'1993RE034286'Method and apparatus for operating vacuum cleaner'19935,166,585'Motor control apparatus for an electric vacuum cleaner'19925,110,266'Electric blower having improved return passage for discharged air flow'19925,075,607'Method and apparatus for operating vacuum cleaner'19915,027,469'Vacuum cleaner'19914,983,895'Method and apparatus for operating vacuum cleaner'19914,958,406'Method and apparatus for operating vacuum cleaner'19904,880,474'Method and apparatus for operating vacuum cleaner'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–1995Patents assigned to HITACHI LTD (10)· patent assignee history
1989–1995Based in Hitachi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 10 | 1989–1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachi, JP | 11 | 1989–1995 |