Inventor

Hisayou Ohsawa

Inventor

Tokyo, JP

Overview

5→

Patents

1976–1980

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.

C08Kprimary

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients38%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium31%

C07DHeterocyclic compounds23%

C09KMaterials for miscellaneous applications, not provided for elsewhere8%

PatentTitleYear

4,241,208'Piperidine derivatives'1980 4,066,615'Polymer compositions containing piperidine derivatives as stabilizers'1978 4,005,094'Piperidine-spiro-hydantoin derivatives'1977 3,975,462'Piperidine-spiro-hydantoin derivatives and their use as stabilizers'1976 3,941,744'Piperidine derivatives and their use as stabilizers'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1980Patents assigned to SANKYO CO (5)· patent assignee history

1976–1978Based in Tokyo, JP· patent location history

1976Based in Hiro, JA· patent location history

1980Based in Hiromachi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SANKYO CO	5	1976–1980

Locations

Location	Patents	Span
Tokyo, JP	3	1976–1978
Hiromachi, JP	1	1980
Hiro, JA	1	1976