Inventor
Masatoshi Muramatsu
Inventor
Shimizu, JP
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F25Bprimary
F25BRefrigeration machines, plants or systems43%
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids29%
F01CRotary-piston or oscillating-piston machines or engines14%
F24FAir-conditioning14%
PatentTitleYear
5,709,090'Refrigerating system and operating method thereof'19985,214,918'Refrigerator and method for indicating refrigerant amount'19935,065,588'Air-conditioner system'19914,904,170'Scroll-type fluid machine with different terminal end wrap angles'19904,714,418'Screw type vacuum pump'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–1998Patents assigned to HITACHI LTD (5)· patent assignee history
1987Based in Ibaraki, JP· patent location history
1990–1998Based in Shimizu, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 5 | 1987–1998 |
Locations
| Location | Patents | Span |
|---|---|---|
| Shimizu, JP | 4 | 1990–1998 |
| Ibaraki, JP | 1 | 1987 |