Inventor

Takao Izawa

Inventor

Yokohama, JP

Overview

3→

Patents

1989–1998

Patent span

Chemistry

Primary field (CPC C)

Patents· 3 as inventor

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

C07Dprimary

C07DHeterocyclic compounds33%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium17%

C07HSugars17%

G02BOptical elements, systems or apparatus17%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light17%

PatentTitleYear

5,805,748'Laser beam shaping system'1998 4,997,923'Dihydrate crystals of etoposide-2-dimethylamino compound hydrochloride and a process for production thereof'1991 4,824,955'Selenium oxy chloride-pyridine or bipyridine complexes'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1991Patents assigned to NIPPON KAYAKU KK (2)· patent assignee history

1989Based in Yono, JP· patent location history

1991Based in Koga, JP· patent location history

1998Patents assigned to SHOWA OPTRONIC CO LTD (1)· patent assignee history

1998Based in Yokohama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NIPPON KAYAKU KK	2	1989–1991
SHOWA OPTRONIC CO LTD	1	1998

Locations

Location	Patents	Span
Yokohama, JP	1	1998
Koga, JP	1	1991
Yono, JP	1	1989