Inventor

Hiroaki Tan

Inventor

Yamaguchi, JP

Overview

9→

Patents

1989–2002

Patent span

Chemistry

Primary field (CPC C)

Patents· 9 as inventor

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

C07Dprimary

C07DHeterocyclic compounds41%

C07CAcyclic or carbocyclic compounds29%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations6%

C07GCompounds of unknown constitution6%

C09KMaterials for miscellaneous applications, not provided for elsewhere6%

C12NMicroorganisms or enzymes6%

C12PFermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture6%

PatentTitleYear

6,465,221'Method of producing a taxane-type diterpene'2002 6,019,911'Polycyclic compound, liquid crystal material consisting of the polycyclic compound, liquid crystal composition comprising the liquid crystal material, and liquid crystal element'2000 5,432,279'Process for the preparation of binary indole alkaloids'1995 5,072,007'Process for preparing polyalkyl-2-alkoxy-7-hydroxychroman derivatives'1991 5,037,977'Method for production of dimeric alkaloids'1991 4,962,200'Nitrogen-containing compound'1990 4,894,475'Alpha-acyloxyketone derivatives'1990 4,886,910'Cyanoguanidine derivative and process for preparation thereof'1989 4,886,912'Cyanoguanidine derivative and process for preparation thereof'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1995Patents assigned to MITSUI PETROCHEMICAL IND (7)· patent assignee history

1989–1990Based in Otake, JP· patent location history

1990Based in Ohtake, JP· patent location history

1991–2002Based in Yamaguchi, JP· patent location history

2000–2002Patents assigned to MITSUI CHEMICALS INC (2)· patent assignee history

2000Based in Sodegaura, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MITSUI PETROCHEMICAL IND	7	1989–1995
MITSUI CHEMICALS INC	2	2000–2002

Locations

Location	Patents	Span
Yamaguchi, JP	4	1991–2002
Otake, JP	3	1989–1990
Sodegaura, JP	1	2000
Ohtake, JP	1	1990