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Inventor

Hiroyo Haga

Inventor
Sagamihara, JP

Overview

10→
Patents
1978–2008
Patent span
Chemistry
Primary field (CPC C)

Patents· 10 as inventor

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

C30Bprimary
C30BSingle-crystal growth21%
B23KSoldering or unsoldering14%
C22CAlloys14%
G02BOptical elements, systems or apparatus14%
Y10TTechnical subjects covered by former us classification14%
C21DModifying the physical structure of ferrous metals7%
E21BEarth or rock drilling7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
PatentTitleYear
7,404,856'Nitrogen-doped silicon substantially free of oxidation induced stacking faults'20087,182,809'Nitrogen-doped silicon substantially free of oxidation induced stacking faults'20076,869,477'Controlled neck growth process for single crystal silicon'20054,842,816'High toughness steel'19894,804,021'Highly tough ERW steel pipe with distinguished sour resistance'19894,802,270'Apparatus for passing optical fibers through tubular products'19894,793,048'Method for passing optical fibers through tubular products by vibrating the tubular products'19884,645,893'Method for manufacturing spiral-welded steel pipe'19874,254,323'Apparatus for monitoring and controlling a welding phenomenon in an electric resistance welding'19814,079,224'Method for preventing brittle fracture of steel pipe structures'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1989Patents assigned to NIPPON STEEL CORP (7)· patent assignee history
1978Based in Tokyo, JP· patent location history
1981Based in Machida, JP· patent location history
1987–1989Based in Sagamihara, JP· patent location history
1988–1989Patents assigned to NIPPON STEEL WELDING PROD ENG (2)· patent assignee history
2005–2008Patents assigned to MEMC ELECTRONIC MATERIALS (3)· patent assignee history
2005–2008Based in Utsunomiya, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NIPPON STEEL CORP71978–1989
MEMC ELECTRONIC MATERIALS32005–2008
NIPPON STEEL WELDING PROD ENG21988–1989
Locations
LocationPatentsSpan
Sagamihara, JP51987–1989
Utsunomiya, JP32005–2008
Machida, JP11981
Tokyo, JP11978