Inventor

Yasuo Koseki

Inventor

Hitachiota, JP

Overview

23→

Patents

1978–2021

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 23 as inventor

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

F25Bprimary

F25BRefrigeration machines, plants or systems21%

Y02ATechnologies for adaptation to climate change12%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications10%

F24FAir-conditioning9%

B01DSeparation6%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution6%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%

C02FTreatment of water, waste water, sewage, or sludge3%

C09KMaterials for miscellaneous applications, not provided for elsewhere3%

F25DRefrigerators3%

PatentTitleYear

10,968,379Heat-storage composition2021 5,678,420'Waste incineration heat conversion system'1997 5,675,970'Rankine cycle power generation system and a method for operating the same'1997 5,517,830'Multiple type absorption air conditioning system'1996 5,447,042'Multiple type absorption air conditioning system'1995 5,435,380'Heat storage apparatus and method'1995 5,289,868'Absorption chiller heater and unit-type air conditioning system'1994 5,285,645'Regenerative type air conditioning equipment'1994 5,282,369'Multiple type absorption air conditioning system'1994 5,275,010'Control method and apparatus of absorption chiller heater'1994 5,018,367'Cooling energy generator with cooling energy accumulator'1991 4,986,079'Apparatus and method of generating coldness'1991 4,953,694'Distilling apparatus'1990 4,879,041'Process for producing ultra-pure water and process for using said ultra-pure water'1989 4,785,523'Method of manufacturing a composite member of metal plates and synthetic resin'1988 4,783,277'Absorption-type refrigerator'1988 4,746,437'Method and apparatus for concentration aqueous solution and method and apparatus for recovering temperature'1988 4,670,137'Impurity detector'1987 4,638,646'Heat storing apparatus'1987 4,363,219'Method and system of heat energy conversion'1982 4,219,441'Aqueous alkali or alkaline treat and heat regeneration of NH.sub.4.sup.+ a d'1980 4,205,459'Apparatus for regenerating an adsorbent'1980 4,113,618'Method of and apparatus for solid-liquid separation'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1997Patents assigned to HITACHI LTD (21)· patent assignee history

1978–1982Based in Ibaraki, JP· patent location history

1980Patents assigned to HITACHI CHEMICAL CO LTD (1)· patent assignee history

1980Based in Hitachi, JP· patent location history

1987–1988Based in Hitachiohta, JP· patent location history

1988Patents assigned to FUJI XEROX CO LTD (1)· patent assignee history

1988–1997Based in Hitachiota, JP· patent location history

1995Patents assigned to HITACHI PLANT ENG & CONSTR CO (1)· patent assignee history

2021Patents assigned to DAINIPPON INK & CHEMICALS (1)· patent assignee history

2021Based in Saitama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	21	1978–1997
DAINIPPON INK & CHEMICALS	1	2021
FUJI XEROX CO LTD	1	1988
HITACHI CHEMICAL CO LTD	1	1980
HITACHI PLANT ENG & CONSTR CO	1	1995

Locations

Location	Patents	Span
Hitachiota, JP	12	1988–1997
Hitachiohta, JP	3	1987–1988
Ibaraki, JP	2	1978–1982
Hitachi, JP	2	1980
Saitama, JP	1	2021