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Inventor

Masahiko Kusumoto

Inventor
Kanagawa, JP

Overview

12→
Patents
1976–2005
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 compounds22%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds17%
G02BOptical elements, systems or apparatus14%
C07DHeterocyclic compounds11%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds11%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients8%
A01GHorticulture6%
C08LCompositions of macromolecular compounds6%
B29CShaping or joining of plastics3%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
PatentTitleYear
6,974,881'Production method of 4,6-diaminoresorcin'20056,686,509'Process for producing , -difluorocycloalkane compound'20046,664,364'Selenium-containing transparent optical material'20036,482,918'Selenium-containing transparent optical material'20026,359,180'Production method of 4,6-diaminoresorcin'20026,303,747'Selenium-containing transparent optical material'20016,124,424'Selenized transparent optical material'20005,389,708'Sulfur-containing acid phosphoric ester internal release agent'19955,302,749'Stabilizing method of isocyanate compounds and isocyanate compositions stabilized thereby'19945,194,559'Optical urethane resins and plastic lenses comprising the same'19934,071,975'Method of promoting the growth of plants'19783,991,138'Resin composition for the formation of light-degradable mulching film for agricultural use'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1978Patents assigned to DAICEL LTD (2)· patent assignee history
1978Based in Ohimachi, JP· patent location history
1993–1995Patents assigned to MITSUI TOATSU CHEMICALS (3)· patent assignee history
1993–2005Based in Fukuoka, JP· patent location history
1994Based in Ohmuta, JP· patent location history
1995–2004Based in Omuta, JP· patent location history
2000–2005Patents assigned to MITSUI CHEMICALS INC (7)· patent assignee history
2000–2003Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MITSUI CHEMICALS INC72000–2005
MITSUI TOATSU CHEMICALS31993–1995
DAICEL LTD21976–1978
Locations
LocationPatentsSpan
Kanagawa, JP42000–2003
Fukuoka, JP31993–2005
Omuta, JP21995–2004
Ohmuta, JP11994
Ohimachi, JP11978