Inventor

Hirotoshi Ishimaru

Inventor

Ibaraki, JP

Overview

10→

Patents

1997–2013

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 10 as inventor

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

F04Dprimary

F04DNon-positive-displacement pumps23%

F05BIndexing scheme relating to wind, spring, weight, inertia or like motors, to machines or engines for liquids covered by subclasses f03b, f03d and f03g23%

F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants23%

B01FMixing, e.g. dissolving, emulsifying or dispersing3%

B01LChemical or physical laboratory apparatus for general use3%

C01BNon-metallic elements3%

F02BInternal-combustion piston engines3%

F02DControlling combustion engines3%

F02MSupplying combustion engines in general with combustible mixtures or constituents thereof3%

G01NInvestigating or analysing materials by determining their chemical or physical properties3%

PatentTitleYear

8,496,890'Pretreatment apparatus for chemical analysis'2013 7,654,232'Hydrogen engine system'2010 6,371,724'Centrifugal fluid machine'2002 6,364,607'Centrifugal fluid machine'2002 6,312,222'Centrifugal fluid machine'2001 6,290,460'Centrifugal fluid machine'2001 6,139,266'Centrifugal fluid machine'2000 5,971,705'Centrifugal fluid machine'1999 5,857,834'Centrifugal fluid machine'1999 5,595,473'Centrifugal fluid machine'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2010Patents assigned to HITACHI LTD (9)· patent assignee history

1997–2002Based in Ibaraki, JP· patent location history

1999Based in Niihari-gun, JP· patent location history

2010–2013Based in Hitachinaka, JP· patent location history

2013Patents assigned to FUKUZONO SHINICHI (1)· patent assignee history

2013Patents assigned to HITACHI HIGH TECH CORP (1)· patent assignee history

2013Patents assigned to ISHIMARU HIROTOSHI (1)· patent assignee history

2013Patents assigned to KATO HAJIME (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	9	1997–2010
FUKUZONO SHINICHI	1	2013
HITACHI HIGH TECH CORP	1	2013
ISHIMARU HIROTOSHIself	1	2013
KATO HAJIME	1	2013

Locations

Location	Patents	Span
Ibaraki, JP	7	1997–2002
Hitachinaka, JP	2	2010–2013
Niihari-gun, JP	1	1999