Inventor
Hisao Suka
Inventor
Hitachi, JP
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A47Lprimary
A47LDomestic washing or cleaning50%
F04DNon-positive-displacement pumps13%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants13%
G03GElectrography13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
PatentTitleYear
6,661,994'Electrophotographic image forming system'20036,146,094'Motor-driven blower and method of manufacturing impeller for motor-driven blower'20005,381,584'Vacuum cleaner'19955,243,732'Vacuum cleaner with fuzzy logic control'19935,155,885'Vacuum cleaner and method for operating the same'19924,809,394'Vacuum cleaner having a blower facility structure'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–2003Patents assigned to HITACHI LTD (6)· patent assignee history
1989–2003Based in Hitachi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 6 | 1989–2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachi, JP | 6 | 1989–2003 |