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Inventor

Katsuji Shibata

Inventor
Shimotsuma, JP

Overview

12→
Patents
1985–2007
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.

C08Jprimary
C08JWorking-up24%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds18%
H05KPrinted circuits18%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management9%
Y10TTechnical subjects covered by former us classification9%
C08LCompositions of macromolecular compounds6%
B42CBookbinding3%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables3%
C07CAcyclic or carbocyclic compounds3%
C07DHeterocyclic compounds3%
PatentTitleYear
7,202,283'Method for dissolving saturated polyester solution for decomposing saturated polyester and method for decomposition using the same'20076,962,628'Method of treating epoxy resin-cured product'20056,780,894'Treatment liquid for cured unsaturated polyester resin and treatment method thereof'20046,153,359'Process for producing multilayer printed circuit boards'20005,945,258'Process for producing multilayer printed circuit boards'19995,391,687'Method of producing high molecular weight epoxy resin using an amide solvent'19955,304,399'Method of producing epoxy resin film'19945,225,268'Epoxy resin film and method of producing epoxy resin film'19935,115,089'Processes for preparation of polyimide-isoindroquinazolinedione and precursor thereof'19924,833,204'Epoxy resin composition for a copper-clad laminate'19894,824,704'3-Methylbutene-1 polymer composition, process for its preparation and container made thereof'19894,509,732'Document handling apparatus for producing folded and bound stacks of documents'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985Patents assigned to RICOH KK (1)· patent assignee history
1985Based in Kiyose, JP· patent location history
1989–2007Patents assigned to HITACHI CHEMICAL CO LTD (10)· patent assignee history
1989Patents assigned to MITSUBISHI CHEM IND (1)· patent assignee history
1989Based in Shimozuma, JP· patent location history
1989Based in Yokohama, JP· patent location history
1992–2007Based in Shimotsuma, JP· patent location history
2004–2005Based in Ibaraki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI CHEMICAL CO LTD101989–2007
MITSUBISHI CHEM IND11989
RICOH KK11985
Locations
LocationPatentsSpan
Shimotsuma, JP71992–2007
Ibaraki, JP22004–2005
Shimozuma, JP11989
Yokohama, JP11989
Kiyose, JP11985