Inventor

Toshio Sawa

Inventor

Hitachi, JP

Overview

1976–2004

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.

C02Fprimary

C02FTreatment of water, waste water, sewage, or sludge21%

B01DSeparation18%

G21CNuclear reactors11%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution11%

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

F16KValves5%

G01NInvestigating or analysing materials by determining their chemical or physical properties5%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry3%

C01FCompounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals3%

F25BRefrigeration machines, plants or systems3%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to AGENCY IND SCIENCE TECHN (2)· patent assignee history

1976–1995Based in Hitachi, JP· patent location history

1977–1995Patents assigned to HITACHI LTD (11)· patent assignee history

1979Patents assigned to BABCOCK HITACHI KK (1)· patent assignee history

1981Based in Ibaraki, JP· patent location history

1986–2004Patents assigned to NIPPO SANGYO (2)· patent assignee history

1986–2004Based in Sayama, JP· patent location history

1991–1992Patents assigned to IRIE KOKEN KK (2)· patent assignee history

Assignee and location history derived from the patent record.

Assignees

Locations