Inventor
Masayoshi Muraki
Inventor
Kanagawa, JP
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C10Mprimary
C10MLubricating compositions38%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions38%
C07CAcyclic or carbocyclic compounds8%
C09KMaterials for miscellaneous applications, not provided for elsewhere8%
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids8%
PatentTitleYear
6,221,274'Lubricant compositions for refrigerating machine employing HFC-32, HFC-125 or HFC-134A'20015,728,655'Refrigerating machine oil composition for use with HCFC and HFC refrigerants'19985,653,909'Refrigerating machine oil composition for use with HFC refrigerant'19975,043,497'Lubricating oil for traction drives'19914,371,726'Composition suitable for mechanical power transmission and process for operating traction drives'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–1998Patents assigned to MITSUBISHI OIL CO (4)· patent assignee history
1983Patents assigned to NIPPON STEEL CHEMICAL CO (1)· patent assignee history
1983Based in Yokohama, JP· patent location history
1991–2001Based in Kanagawa, JP· patent location history
1997–2001Patents assigned to MITSUBISHI ELECTRIC CORP (2)· patent assignee history
1998Patents assigned to MITSUBISHI HEAVY IND LTD (1)· patent assignee history
2001Patents assigned to NIPPON MITSUBISHI OIL CORP (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MITSUBISHI OIL CO | 4 | 1983–1998 |
| MITSUBISHI ELECTRIC CORP | 2 | 1997–2001 |
| MITSUBISHI HEAVY IND LTD | 1 | 1998 |
| NIPPON MITSUBISHI OIL CORP | 1 | 2001 |
| NIPPON STEEL CHEMICAL CO | 1 | 1983 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kanagawa, JP | 4 | 1991–2001 |
| Yokohama, JP | 1 | 1983 |