Inventor

Atsushi Izumi

Inventor

Tokyo, JP

Overview

4→

Patents

1990–2008

Patent span

Chemistry

Primary field (CPC C)

Patents· 4 as inventor

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

C07Kprimary

C07KPeptides15%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%

A61KPreparations for medical, dental or toiletry purposes8%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations8%

B01DSeparation8%

C07DHeterocyclic compounds8%

C07HSugars8%

C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms8%

C30BSingle-crystal growth8%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein8%

PatentTitleYear

7,449,134'DAST twin crystal, process for producing the same, and use thereof'2008 7,211,380'Physiologically active polypeptide and DNA'2007 4,933,277'Method of quantitative analysis of hydrogen peroxide and reagent therefor'1990 4,904,763'Physiologically-active novel peptides'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2008Patents assigned to DAIICHI PURE CHEMICALS CO LTD (3)· patent assignee history

1990Patents assigned to HISAYUKI MATSUO (1)· patent assignee history

1990–2007Based in Tokyo, JP· patent location history

2007Patents assigned to SHIONOGI & CO (1)· patent assignee history

2008Patents assigned to DAIICHI SEIYAKU CO (1)· patent assignee history

2008Based in Ibaraki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DAIICHI PURE CHEMICALS CO LTD	3	1990–2008
DAIICHI SEIYAKU CO	1	2008
HISAYUKI MATSUO	1	1990
SHIONOGI & CO	1	2007

Locations

Location	Patents	Span
Tokyo, JP	3	1990–2007
Ibaraki, JP	1	2008