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Inventor

Hideo Tatsumi

Inventor
Mito, JP

Overview

19→
Patents
1976–2002
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 19 as inventor

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

Y10Tprimary
Y10TTechnical subjects covered by former us classification24%
B21KMaking forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels22%
F16DCouplings for transmitting rotation16%
H02KDynamo-electric machines10%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material4%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges4%
F16HGearing4%
B23PMetal-working not otherwise provided for2%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof2%
F04BPositive-displacement machines for liquids2%
PatentTitleYear
6,404,086'Anisotropic magnet brushless motor having a rotor with elastic insulating support structure'20026,032,879'Fuel injector for use in internal combustion engine'20004,413,717'Electromagnetic clutch and method of manufacture'19834,392,296'Method of joining two metal members'19834,377,762'Rotary electric machine rotor and a method of manufacturing the same'19834,376,333'Method of joining members of metal by forced insertion'19834,370,793'Method of coupling two metallic members'19834,339,873'Method of making rotor of rotary machines'19824,335,496'Method of coupling two concentrically disposed members'19824,325,678'Hydraulic pressure producing system for a hydraulic press'19824,306,167'Flywheel magneto rotor and manufacture method thereof'19814,305,198'Method of making an electromagnetic clutch'19814,295,553'Electromagnetic clutch'19814,290,295'Method of making V-grooved pulley assembly'19814,249,298'Method for connecting two members'19814,028,568'AC Generator for vehicles'19774,004,211'Compound AC generator'19773,978,373'Circuit breaker'19763,933,023'Method for manufacturing a unit piece of a V pulley'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2002Patents assigned to HITACHI LTD (19)· patent assignee history
1976Based in Hitachi, JP· patent location history
1977–2002Based in Mito, JP· patent location history
1981–1983Based in Ibaraki, JP· patent location history
1983Based in Sumiyoshi, JP· patent location history
2000–2002Patents assigned to HITACHI CAR ENG CO LTD (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD191976–2002
HITACHI CAR ENG CO LTD22000–2002
Locations
LocationPatentsSpan
Mito, JP121977–2002
Ibaraki, JP31981–1983
Sumiyoshi, JP21983
Hitachi, JP21976