Inventor

Tomio Tsurugi

Inventor

Chiba, JP

Overview

12→

Patents

1984–2007

Patent span

Chemistry

Primary field (CPC C)

Patents· 12 as inventor

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

C07Cprimary

C07CAcyclic or carbocyclic compounds25%

Y02PClimate change mitigation technologies in the production or processing of goods25%

C07DHeterocyclic compounds23%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations5%

C12NMicroorganisms or enzymes5%

C12PFermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture5%

C12RIndexing scheme associated with subclasses c12c - c12q, relating to microorganisms5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

C07HSugars3%

PatentTitleYear

7,220,855'Process for producing methylcobalamin'2007 6,245,911'Donepezil polycrystals and process for producing the same'2001 5,700,938'Intermediates for imidazopyridine derivatives'1997 5,618,969'Intermediates for imidazopyridines'1997 5,608,068'Process for the preparation of imidazopyridine derivatives and intermediates'1997 5,587,504'Sulfonyloxy-biphenylcarboxylic ester derivatives which are intermediates'1996 5,583,229'Process for the preparation of imidazopyridine derivatives'1996 5,559,236'Intermediates for substituted biphenylmethylmidazopyridine angiotensin II antagonists'1996 5,557,002'Process for the preparation of biphenyl containing intermediates useful in making angiotensin II receptor antagonists'1996 5,554,757'Process for the preparation of imidazopyridine derivatives, and intermediates therefore'1996 4,500,463'Polyprenyl carboxylic acid derivatives'1985 4,474,881'Process for preparing polyprenyl carboxylic acid derivatives'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–2007Patents assigned to EISAI CO LTD (12)· patent assignee history

1984–1985Patents assigned to AGENCY IND SCIENCE TECHN (2)· patent assignee history

1984–1985Based in Gifu, JP· patent location history

1996–1997Patents assigned to EISAI KAGAKU KK (5)· patent assignee history

1996–2007Based in Chiba, JP· patent location history

1997Patents assigned to EISAI CHEMICAL (1)· patent assignee history

2001Based in Ibaraki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
EISAI CO LTD	12	1984–2007
EISAI KAGAKU KK	5	1996–1997
AGENCY IND SCIENCE TECHN	2	1984–1985
EISAI CHEMICAL	1	1997

Locations

Location	Patents	Span
Chiba, JP	9	1996–2007
Gifu, JP	2	1984–1985
Ibaraki, JP	1	2001