Inventor

Hajime Machida

Inventor

Tokyo, JP

Overview

1976–1999

Patent span

Physics

Primary field (CPC G)

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

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer35%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%

Y10TTechnical subjects covered by former us classification15%

F02MSupplying combustion engines in general with combustible mixtures or constituents thereof10%

C08LCompositions of macromolecular compounds5%

D01FChemical features in the manufacture of artificial filaments, threads, fibres, bristles or ribbons5%

F04BPositive-displacement machines for liquids5%

H01FMagnets5%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to TORAY INDUSTRIES (1)· patent assignee history

1976Based in Ehime, JP· patent location history

1984–1995Patents assigned to RICOH KK (7)· patent assignee history

1984–1995Based in Tokyo, JP· patent location history

1998–1999Patents assigned to ZEXEL CORP (2)· patent assignee history

1998–1999Based in Higashimatsuyama, JP· patent location history

Assignee and location history derived from the patent record.

Assignees

Locations