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Inventor

Iwao Hayakawa

Inventor
Akaiwa, JP

Overview

2→
Patents
1986–1989
Patent span
Human necessities
Primary field (CPC A)

Patents· 2 as inventor

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

A01Gprimary
A01GHorticulture20%
A61KPreparations for medical, dental or toiletry purposes20%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds20%
E01CConstruction of, or surfaces for, roads, sports grounds, or the like20%
Y10TTechnical subjects covered by former us classification20%
PatentTitleYear
4,812,339'Artificial soil and construction of bed soil for putting green using artificial soil'19894,579,881'Soft material for lining a denture base'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986Patents assigned to HAYAKAWA IWAO (1)· patent assignee history
1986Patents assigned to KUREHA CHEMICAL IND CO LTD (1)· patent assignee history
1986Patents assigned to MASUHARA HIDEKAZU (1)· patent assignee history
1986Based in Tokyo, JP· patent location history
1989Patents assigned to NIPPON SHOKUSEI KK (1)· patent assignee history
1989Based in Akaiwa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HAYAKAWA IWAOself11986
KUREHA CHEMICAL IND CO LTD11986
MASUHARA HIDEKAZU11986
NIPPON SHOKUSEI KK11989
Locations
LocationPatentsSpan
Akaiwa, JP11989
Tokyo, JP11986