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Inventor

Keishi Hamada

Inventor
Omiya, JP

Overview

4→
Patents
1991–2019
Patent span
Chemistry
Primary field (CPC C)

Patents· 4 as inventor

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

Y10Tprimary
Y10TTechnical subjects covered by former us classification27%
C04BLime, magnesia18%
C08JWorking-up9%
C09DCoating compositions, e.g. paints, varnishes or lacquers9%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices9%
G06FElectric digital data processing9%
H01LSemiconductor devices9%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h109%
PatentTitleYear
10,248,030Process recipe evaluation method, storage medium, assisting device for process recipe evaluation, and liquid processing apparatus20197,510,769'Laminate film'20095,372,855'Treatment of inorganic building materials'19945,023,136'Treated inorganic building materials'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2009Patents assigned to HITACHI CHEMICAL CO LTD (3)· patent assignee history
1991–1994Based in Omiya, JP· patent location history
2009Patents assigned to NIPPON BEE CHEMICAL CO LTD (1)· patent assignee history
2009Patents assigned to NIPPON PAINT CO LTD (1)· patent assignee history
2009Based in Ibaraki, JP· patent location history
2019Patents assigned to TOKYO ELECTRON LTD (1)· patent assignee history
2019Based in Koshi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI CHEMICAL CO LTD31991–2009
NIPPON BEE CHEMICAL CO LTD12009
NIPPON PAINT CO LTD12009
TOKYO ELECTRON LTD12019
Locations
LocationPatentsSpan
Omiya, JP21991–1994
Koshi, JP12019
Ibaraki, JP12009