Inventor

Yosio Hayasi

Inventor

Ushiku, JP

Overview

4→

Patents

1978–1990

Patent span

Human necessities

Primary field (CPC A)

Patents· 4 as inventor

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

A61Pprimary

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations29%

C07DHeterocyclic compounds29%

A01NPreservation of bodies of humans or animals or plants or parts thereof14%

B27KProcesses, apparatus or selection of substances for impregnating, staining, dyeing, bleaching of wood or similar materials, or treating of wood or similar materials with permeant liquids, not otherwise provided for14%

C07CAcyclic or carbocyclic compounds14%

PatentTitleYear

4,902,700'Thiazole derivative and leukotriene antagonist containing the same as the effective ingredients'1990 4,839,388'Prostacyclins and pharmaceuticals containing the same'1989 4,078,074'2H-Chromene-2-spiro-3\'-phthalides useful as horticultural and agricultural fungicides'1978 4,075,121'Wood preservatives and method for wood preservation treatment'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978Patents assigned to MITSUBISHI PETROCHEMICAL CO (1)· patent assignee history

1978Patents assigned to RIKAGAKU KENKYUSHO AND MITSUBI (1)· patent assignee history

1978Based in Ami, JP· patent location history

1978Based in Amimachi, JP· patent location history

1989–1990Patents assigned to MITSUBISHI CHEM IND (2)· patent assignee history

1989Patents assigned to SAGAMI CHEM RES (1)· patent assignee history

1989–1990Based in Ushiku, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MITSUBISHI CHEM IND	2	1989–1990
MITSUBISHI PETROCHEMICAL CO	1	1978
RIKAGAKU KENKYUSHO AND MITSUBI	1	1978
SAGAMI CHEM RES	1	1989

Locations

Location	Patents	Span
Ushiku, JP	2	1989–1990
Ami, JP	1	1978
Amimachi, JP	1	1978