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Inventor

Iwao Sakaguchi

Inventor
Hyogo, JP

Overview

8→
Patents
1982–2004
Patent span
Chemistry
Primary field (CPC C)

Patents· 8 as inventor

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

C09Bprimary
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments50%
A61BDiagnosis10%
C07CAcyclic or carbocyclic compounds10%
F04BPositive-displacement machines for liquids10%
G01BMeasuring length, thickness or similar linear dimensions10%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure10%
PatentTitleYear
6,778,286'Apparatus for measuring distortion of cylindrical body'20045,416,263'Process for producing 4,4\'-Diamino-1,1\'-dianthraquinonyl pigments'19955,393,899'Process for purification of crude 4,4\'-diamino-1,1\'-dianthraquinonyl-3,3\'-disulfonic acids and salts thereof'19955,320,678'Process for producing 4,4\'-diamino-1,1,\'-dianthraquinonyl pigments'19944,966,533'Vacuum pump with rotational sliding piston support'19904,481,358'Process for producing dioxazine violet pigment'19844,354,506'Intracranial pressure gauge'19824,317,908'Process for producing dioxazine violet pigment'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–1995Patents assigned to SUMITOMO CHEMICAL CO (4)· patent assignee history
1982Patents assigned to NAGANOKEIKI SEISAKUJO COMPANY (1)· patent assignee history
1982–1984Based in Toyonaka, JP· patent location history
1982Based in Ueda, JP· patent location history
1990Patents assigned to NAGANO KEIKI SEISAKUSHO KK (1)· patent assignee history
1990–2004Based in Nagano, JP· patent location history
1994–1995Based in Hyogo, JP· patent location history
1995Patents assigned to SUMIMOTO CHEMICAL COMPANY LIMI (1)· patent assignee history
2004Patents assigned to MINEBEA CO LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SUMITOMO CHEMICAL CO41982–1995
MINEBEA CO LTD12004
NAGANO KEIKI SEISAKUSHO KK11990
NAGANOKEIKI SEISAKUJO COMPANY11982
SUMIMOTO CHEMICAL COMPANY LIMI11995
Locations
LocationPatentsSpan
Hyogo, JP31994–1995
Nagano, JP21990–2004
Toyonaka, JP21982–1984
Ueda, JP11982