Inventor

Shigeru Kawakami

Inventor

Kanagawa, JP

Overview

1976–2009

Patent span

General tagging of new technological developments

Primary field (CPC Y)

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

Y10Tprimary

Y10TTechnical subjects covered by former us classification27%

E05BLocks18%

F01LCyclically operating valves for machines or engines18%

H04NPictorial communication, e.g. television18%

C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds9%

C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties9%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1976–1981Patents assigned to KAWAKAMI SHIGERU (2)· patent assignee history

1976–1981Based in Katsushika-ku, JP· patent location history

1996Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (2)· patent assignee history

1996Based in Suita, JP· patent location history

1998Patents assigned to MITSUBISHI CHEM CORP (1)· patent assignee history

1998Based in Kitakyushu, JP· patent location history

2008–2009Patents assigned to HITACHI LTD (2)· patent assignee history

2008–2009Based in Kanagawa, JP· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	2	2008–2009
KAWAKAMI SHIGERUself	2	1976–1981
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD	2	1996
MITSUBISHI CHEM CORP	1	1998

Locations