Inventor
Yoshikatsu Hiratsuka
Inventor
Tokyo, JP
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F25Bprimary
F25BRefrigeration machines, plants or systems40%
F02GHot gas or combustion-product positive-displacement engine plants25%
F04BPositive-displacement machines for liquids10%
F01BMachines or engines, in general or of positive-displacement type, e.g. steam engines5%
F16FSprings5%
F16JPistons5%
F16KValves5%
F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact5%
PatentTitleYear
10,480,665Valve structure, nonlubricated linear compressor, and cryocooler201910,393,411Stirling cryocooler201910,228,164Stirling refrigerator20199,976,780Stirling-type pulse tube refrigerator20189,964,340Stirling refrigerator20189,759,459'Regenerator and regenerative refrigerator with insertion member'20179,574,798'U-shaped pulse-tube refrigerator'20179,127,864'Regenerative refrigerator'20159,103,332'Refrigerator and compressor'20155,435,140'Vuilleumier heat pump device'1995Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1995Patents assigned to DAIKIN IND LTD (1)· patent assignee history
1995Based in Ibaragi, JP· patent location history
2015–2019Patents assigned to SUMITOMO HEAVY INDUSTRIES (9)· patent assignee history
2015–2018Based in Tokyo, JP· patent location history
2018–2019Based in Nishitokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SUMITOMO HEAVY INDUSTRIES | 9 | 2015–2019 |
| DAIKIN IND LTD | 1 | 1995 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 5 | 2015–2018 |
| Nishitokyo, JP | 4 | 2018–2019 |
| Ibaragi, JP | 1 | 1995 |