Inventor
Yonezo Ikumi
Inventor
Gunma, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F25Bprimary
F25BRefrigeration machines, plants or systems44%
F16KValves11%
F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact11%
F28FDetails of heat-exchange and heat-transfer apparatus, of general application11%
Y02ATechnologies for adaptation to climate change11%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications11%
PatentTitleYear
6,449,962'REFRIGERANT COLLECTING DEVICE, REFRIGERANT COLLECTING METHOD, REFRIGERATOR HAVING REFRIGERANT COLLECTING DEVICE, CONTROL METHOD FOR REFRIGERANT IN REFRIGERANT CIRCUIT OR REGENERATION DEVICE AND REGENERATION METHOD FOR REFRIGERANT COLLECTING'20025,699,675'Heat exchanger and cooling apparatus mounted with the same'19975,634,352'Refrigeration cycle using six-way change-over valve'19974,307,577'Air conditioning system making use of waste heat'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981Patents assigned to AGENCY IND SCIENCE TECHN (1)· patent assignee history
1981–1997Based in Tatebayashi, JP· patent location history
1997–2002Patents assigned to SANYO ELECTRIC CO (3)· patent assignee history
1997–2002Based in Gunma, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SANYO ELECTRIC CO | 3 | 1997–2002 |
| AGENCY IND SCIENCE TECHN | 1 | 1981 |
Locations
| Location | Patents | Span |
|---|---|---|
| Gunma, JP | 2 | 1997–2002 |
| Tatebayashi, JP | 2 | 1981–1997 |