Inventor

Tomoyuki Kurumada

Inventor

Tokyo, JP

Overview

36→

Patents

1976–1998

Patent span

Chemistry

Primary field (CPC C)

Patents· 36 as inventor

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

C08Kprimary

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients41%

C07DHeterocyclic compounds36%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium10%

C08LCompositions of macromolecular compounds4%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds3%

C09KMaterials for miscellaneous applications, not provided for elsewhere3%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations1%

C07CAcyclic or carbocyclic compounds1%

PatentTitleYear

5,739,377'Phenylalkanoic acid esters and their use as antioxidants'1998 5,096,948'Resistant resin compositions'1992 4,572,912'Thiazolidine derivatives, their preparation and compositions containing them'1986 4,533,688'Tris(piperidylaminotriazylamino) compounds, their preparation and their use as polymer stabilizers'1985 4,413,076'Polyalkylpiperdine side chain stabilizers for synthetic polymer compositions'1983 4,371,644'Piperidine derivatives and their use as polymer stabilizers'1983 4,321,374'Triazine derivatives'1982 4,265,803'Polymers containing polyalkylpiperidines and use thereof as stabilizers'1981 4,241,208'Piperidine derivatives'1980 4,237,294'2,2,6,6-Tetramethylpiperidine derivatives'1980 4,219,465'Piperidine-spiro-hydantoin derivatives and their use as polymer stabilizers'1980 4,212,974'Piperidine derivatives'1980 4,191,683'Derivatives of 4-aminopiperidine as stabilizers for polymers'1980 4,166,813'Polyalkylated 4-aminopiperidine derivatives'1979 4,162,246'Hydantoin derivatives and their use as polymer stabilizers'1979 4,141,883'Stabilization of synthetic polymers by penta-or-hexa-substituted 4-piperidinol derivatives'1979 4,131,599'Stabilization of poly(mono-olefins)'1978 4,125,533'Piperidine derivatives'1978 4,118,368'Synthetic polymer stabilizers'1978 4,105,626'Derivatives of 4-oxopiperidines and their use as polymer stabilizers'1978 4,097,587'1,3,8-Triazaspiro›4.5!decane-2,4-dione polymer stabilizers'1978 4,075,165'Stabilization of polymers by penta- or hexa-substituted 4-piperidinol derivatives'1978 4,066,615'Polymer compositions containing piperidine derivatives as stabilizers'1978 4,061,616'Stabilization of synthetic polymers'1977 4,055,536'4,4\'-Bipiperidylidene derivatives and their use as stabilizers'1977 4,016,168'Piperidine derivatives'1977 4,007,158'Novel piperidine derivatives for the stabilization of synthetic polymers'1977 4,005,094'Piperidine-spiro-hydantoin derivatives'1977 3,984,371'Stabilization of synthetic polymers'1976 3,975,462'Piperidine-spiro-hydantoin derivatives and their use as stabilizers'1976 3,963,730'Process for preparing triacetonamine'1976 3,959,298'Process for preparing triacetonamine'1976 3,941,744'Piperidine derivatives and their use as stabilizers'1976 3,940,363'Piperidine derivatives and their use as stabilizers'1976 3,940,401'4,4-(O-phenylenedioxy)-2,2,6,6-tetramethyl piperidine'1976 3,933,735'4-Piperidone derivatives, their preparation and their use as stabilizers'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1998Patents assigned to SANKYO CO (34)· patent assignee history

1976–1998Based in Tokyo, JP· patent location history

1976–1986Based in Hiromachi, JP· patent location history

1976Based in Hiro, JA· patent location history

1978–1980Patents assigned to CIBA GEIGY CORP (3)· patent assignee history

1992Patents assigned to MONSANTO KASEI KK (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SANKYO CO	34	1976–1998
CIBA GEIGY CORP	3	1978–1980
MONSANTO KASEI KK	1	1992

Locations

Location	Patents	Span
Tokyo, JP	20	1976–1998
Hiromachi, JP	14	1976–1986
Hiro, JA	2	1976