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Inventor

Masaaki Koga

Inventor
Wakayama, JP

Overview

3→
Patents
1990–2012
Patent span
Performing operations
Primary field (CPC B)

Patents· 3 as inventor

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

B22Fprimary
B22FWorking metallic powder18%
G11BInformation storage based on relative movement between record carrier and transducer18%
Y10TTechnical subjects covered by former us classification18%
B22DCasting of metals9%
C22CAlloys9%
C22FChanging the physical structure of non-ferrous metals and non-ferrous alloys9%
F04DNon-positive-displacement pumps9%
F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants9%
PatentTitleYear
8,292,589'Casting aluminum alloy, cast compressor impeller comprising the alloy, and process for producing the same'20125,028,278'Ferromagnetic metal powder and process for preparation thereof'19914,920,010'Ferromagnetic metal powder'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–1991Patents assigned to KAO CORP (2)· patent assignee history
1990–1991Based in Wakayama, JP· patent location history
2012Patents assigned to HITACHI METALS LTD (1)· patent assignee history
2012Patents assigned to HITACHI METALS PREC LTD (1)· patent assignee history
2012Patents assigned to KOGA MASAAKI (1)· patent assignee history
2012Based in Yasugi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KAO CORP21990–1991
HITACHI METALS LTD12012
HITACHI METALS PREC LTD12012
KOGA MASAAKIself12012
Locations
LocationPatentsSpan
Wakayama, JP21990–1991
Yasugi, JP12012