Inventor

Masakuni Hirata

Inventor

Tokyo, JP

Overview

10→

Patents

1976–2003

Patent span

Chemistry

Primary field (CPC C)

Patents· 10 as inventor

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

C10Mprimary

C10MLubricating compositions23%

C10NIndexing scheme associated with subclass c10m relating to lubricating compositions19%

F02BInternal-combustion piston engines12%

F16NLubricating8%

H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers8%

Y10TTechnical subjects covered by former us classification8%

B05BSpraying apparatus4%

B06BMethods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency, e.g. for performing mechanical work in general4%

F01MLubricating of machines or engines in general4%

G10KSound-producing devices4%

PatentTitleYear

6,627,583'Engine oil composition'2003 6,373,958'Electrical/mechanical/sound converter and apparatus of electrical/mechanical/sound conversion'2002 5,744,430'Engine oil composition'1998 5,739,088'Method of lubricating an alcohol-based fuel engine with an engine oil composition'1998 5,701,862'Method and apparatus for replenishing the lubricating oil of an internal combustion engine'1997 5,567,342'Lubricating oil composition for internal combustion engines'1996 5,372,703'Lubricating oils'1994 5,281,347'Lubricating composition for internal combustion engine'1994 4,131,658'Method for atomizing oil and an apparatus therefor'1978 3,946,832'Diaphragm for loud speaker'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2002Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (2)· patent assignee history

1976Based in Katano, JP· patent location history

1978–1998Patents assigned to NIPPON OIL CO LTD (7)· patent assignee history

1978–2003Based in Tokyo, JP· patent location history

1994–1998Based in Yokohama, JP· patent location history

1997Based in Kanagawa, JP· patent location history

2002Based in Osaka, JP· patent location history

2003Patents 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
NIPPON OIL CO LTD	7	1978–1998
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD	2	1976–2002
NIPPON MITSUBISHI OIL CORP	1	2003

Locations

Location	Patents	Span
Tokyo, JP	4	1978–2003
Yokohama, JP	3	1994–1998
Osaka, JP	1	2002
Kanagawa, JP	1	1997
Katano, JP	1	1976