Inventor

Sachio Shimizu

Inventor

Tokyo, JP

Overview

1984–2010

Patent span

Fixed constructions

Primary field (CPC E)

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

C08Lprimary

C08LCompositions of macromolecular compounds15%

E02FDredging15%

E21DShafts15%

A47LDomestic washing or cleaning8%

B01DSeparation8%

B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form8%

F04BPositive-displacement machines for liquids8%

H04MTelephonic communication8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

Y10TTechnical subjects covered by former us classification8%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1984Patents assigned to AIKO ENG KK (1)· patent assignee history

1984–2004Based in Tokyo, JP· patent location history

1991Patents assigned to DENKI KAGAKU KOGYO KK (1)· patent assignee history

1991Based in Chiba, JP· patent location history

2002Based in Nagoya, JP· patent location history

2004Patents assigned to GRACE W R & CO (2)· patent assignee history

2007Based in Sayama, JP· patent location history

2010Patents assigned to HITACHI CONSTRUCTION MACHINERY (1)· patent assignee history

2010Patents assigned to KOMATSU MFG CO LTD (1)· patent assignee history

2010Based in Saitama, JP· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
GRACE W R & CO	2	2004
AIKO ENG KK	1	1984
DENKI KAGAKU KOGYO KK	1	1991
HITACHI CONSTRUCTION MACHINERY	1	2010
KOMATSU MFG CO LTD	1	2010

Locations