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Inventor

Ryuzo Ishigaki

Inventor
Yokohama, JP

Overview

3→
Patents
1991–2021
Patent span
Performing operations
Primary field (CPC B)

Patents· 3 as inventor

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

A61Fprimary
A61FFilters implantable into blood vessels13%
A61LMethods or apparatus for sterilising materials or objects in general13%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form13%
B42DBooks13%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for13%
D21HPulp compositions13%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%
Y10TTechnical subjects covered by former us classification13%
PatentTitleYear
10,926,731Airbag device20215,786,056'Liquid absorbent material used in a pouch for a stoma'19985,074,962'Process for preparing confidential postcard'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991Patents assigned to ECS 88 CO LTD (1)· patent assignee history
1991Patents assigned to JAPAN PULP & PAPER CO LTD (1)· patent assignee history
1991Patents assigned to MIKI TOKUSHU PAPER MFG CO LTD (1)· patent assignee history
1991–2021Based in Yokohama, JP· patent location history
1998Based in Saitama-shi, JP· patent location history
2021Patents assigned to AUTOLIV DEV (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
AUTOLIV DEV12021
ECS 88 CO LTD11991
JAPAN PULP & PAPER CO LTD11991
MIKI TOKUSHU PAPER MFG CO LTD11991
Locations
LocationPatentsSpan
Yokohama, JP21991–2021
Saitama-shi, JP11998