Inventor

Kazuhisa Hiratani

Inventor

Tsukuba, JP

Overview

1983–1997

Patent span

Chemistry

Primary field (CPC C)

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

C07Dprimary

C07DHeterocyclic compounds31%

Y02PClimate change mitigation technologies in the production or processing of goods19%

C22BProduction and refining of metals13%

B01DSeparation6%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry6%

C01DCompounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium6%

C13KSaccharides obtained from natural sources or by hydrolysis of naturally occurring disaccharides, oligosaccharides or polysaccharides6%

G01NInvestigating or analysing materials by determining their chemical or physical properties6%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1983Patents assigned to DIRECTOR GENEREAL OF AGENCY OF (1)· patent assignee history

1983Based in Yatabe, JP· patent location history

1984–1995Patents assigned to AGENCY IND SCIENCE TECHN (6)· patent assignee history

1984Based in Ibaragi, JP· patent location history

1985Based in Ibaraki, JP· patent location history

1989–1997Based in Tsukuba, JP· patent location history

1997Patents assigned to DIRECTOR GENERAL OF IND SCIENC (1)· patent assignee history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
AGENCY IND SCIENCE TECHN	6	1984–1995
DIRECTOR GENERAL OF IND SCIENC	1	1997
DIRECTOR GENEREAL OF AGENCY OF	1	1983

Locations