Inventor

Shigetoshi Tsubotani

Inventor

Ibaraki, JP

Overview

8→

Patents

1985–2002

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.

C07Dprimary

C07DHeterocyclic compounds21%

C12NMicroorganisms or enzymes17%

C12RIndexing scheme associated with subclasses c12c - c12q, relating to microorganisms17%

C12PFermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture14%

A61KPreparations for medical, dental or toiletry purposes10%

C07KPeptides7%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations3%

C07BGeneral methods of organic chemistry3%

C07CAcyclic or carbocyclic compounds3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

PatentTitleYear

6,423,869'Polyol-amino acid compounds having anti-helicobacter pylori activity'2002 5,679,708'Epoxysuccinic acid derivatives, their production and use'1997 5,668,128'Aziridine derivatives, their production and use'1997 5,556,853'Epoxysuccinic acid derivatives'1996 5,310,741'TAN-1251 compounds and their production from penicillium thomii'1994 4,895,864'Antibiotic TAN-950A, its production and use'1990 4,723,004'Cephem compounds'1988 4,497,742'Isomerization of .beta.-lactam compounds'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–2002Patents assigned to TAKEDA CHEMICAL INDUSTRIES LTD (8)· patent assignee history

1985–1988Based in Suita, JP· patent location history

1990Based in Hyogo, JP· patent location history

1994–1996Based in Kawanishi, JP· patent location history

1997Based in Ibaraki, JP· patent location history

2002Based in Osaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TAKEDA CHEMICAL INDUSTRIES LTD	8	1985–2002

Locations

Location	Patents	Span
Ibaraki, JP	2	1997
Kawanishi, JP	2	1994–1996
Suita, JP	2	1985–1988
Osaka, JP	1	2002
Hyogo, JP	1	1990