Inventor

NOBUYUKI NARISAWA

Inventor

Overview

3→

Patents

2023–2026

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 3 as inventor

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

F04Bprimary

F04BPositive-displacement machines for liquids29%

F05CIndexing scheme relating to materials, material properties or material characteristics for machines, engines or pumps other than non-positive-displacement machines or engines14%

F16JPistons14%

G01MTesting static or dynamic balance of machines or structures14%

H02HEmergency protective circuit arrangements14%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters14%

PatentTitleYear

12,529,375Compressor2026 12,116,996Compressor with piston ring arrangement on piston2024 11,632,073Rotating machine drive system and control method for rotating machine drive system2023

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2023–2026Patents assigned to HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (3)· patent assignee history

2023–2026Based in JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD	3	2023–2026

Locations

Location	Patents	Span
JP	3	2023–2026