Inventor

Itaru Nitta

Inventor

Tsukuba, JP

Overview

5→

Patents

1994–1997

Patent span

Chemistry

Primary field (CPC C)

Patents· 5 as inventor

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

C07Cprimary

C07CAcyclic or carbocyclic compounds25%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds25%

C08LCompositions of macromolecular compounds13%

C09KMaterials for miscellaneous applications, not provided for elsewhere13%

C12PFermentation or enzyme-using processes to synthesise a desired chemical compound or composition or to separate optical isomers from a racemic mixture13%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%

PatentTitleYear

5,643,744'Method for producing polypeptide'1997 5,488,138'Process for producing highly pure carboxylic acid phenyl esters'1996 5,446,124'Aromatic oligomer and process for preparing the same'1995 5,399,656'Aromatic polyesters and a method for producing the same'1995 5,352,746'Liquid crystal polyester resin composition improved in fluidity'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–1997Patents assigned to SUMITOMO CHEMICAL CO (5)· patent assignee history

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

1997Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SUMITOMO CHEMICAL CO	5	1994–1997

Locations

Location	Patents	Span
Tsukuba, JP	4	1994–1996
Tokyo, JP	1	1997