Inventor

Seiichiro Hayakawa

Inventor

Ibaraki, JP

Overview

4→

Patents

1991–2004

Patent span

Physics

Primary field (CPC G)

Patents· 4 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus25%

B29CShaping or joining of plastics8%

B29DProducing particular articles from plastics or from substances in a plastic state8%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts8%

B29LIndexing scheme associated with subclass b29c, relating to particular articles8%

C07CAcyclic or carbocyclic compounds8%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds8%

C09KMaterials for miscellaneous applications, not provided for elsewhere8%

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

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices8%

PatentTitleYear

6,759,104'Photocurable composition, cured product and process for producing the same'2004 5,801,884'Optical device and process for producing the same'1998 5,191,061'Resin for high-refraction lens containing a sulfur-containing aromatic(meth)acrylate and a mercapto compound'1993 4,990,653'Sulfur-containing acryl oligomer composition'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to MITSUBISHI PETROCHEMICAL CO (1)· patent assignee history

1991–2004Based in Ibaraki, JP· patent location history

1993Patents assigned to MISUBISHI PETROCHEMICAL CO LTD (1)· patent assignee history

1998–2004Patents assigned to MITSUBISHI CHEM CORP (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MITSUBISHI CHEM CORP	2	1998–2004
MISUBISHI PETROCHEMICAL CO LTD	1	1993
MITSUBISHI PETROCHEMICAL CO	1	1991

Locations

Location	Patents	Span
Ibaraki, JP	4	1991–2004