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Inventor

Ryokichi Yamada

Inventor
Hiratsuka, JP

Overview

2→
Patents
1992–2021
Patent span
Chemistry
Primary field (CPC C)

Patents· 2 as inventor

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

B01Dprimary
B01DSeparation33%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients33%
C08LCompositions of macromolecular compounds33%
PatentTitleYear
10,988,615Polyamide resin composition and molded article20215,104,426'Method of and apparatus for separating gas mixture'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992Patents assigned to HITACHI LTD (1)· patent assignee history
1992Patents assigned to TOKYO ELECTRIC POWER CO (1)· patent assignee history
1992Based in Katsuta, JP· patent location history
2021Patents assigned to MITSUBISHI ENG PLASTICS CORP (1)· patent assignee history
2021Based in Hiratsuka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD11992
MITSUBISHI ENG PLASTICS CORP12021
TOKYO ELECTRIC POWER CO11992
Locations
LocationPatentsSpan
Hiratsuka, JP12021
Katsuta, JP11992