Hitachi Seiko, Ltd.
Patent Owner
Stats
- 5 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Oct 08, 2002 most recent publication
Details
- 5 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 677 Total Citation Count
- Dec 29, 1976 Earliest Filing
- 35 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
5349159 Consumable-electrode AC gas shield arc welding method and apparatus thereforMay 24, 93Sep 20, 94[B23K]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
6388684 Method and apparatus for displaying a target region and an enlarged imageExpiredJun 25, 93May 14, 02[G06F]
6207927 Gas-shielded AC arc welding method and machine making use of consumable electrodeExpiredFeb 10, 99Mar 27, 01[B23K]
5225660 Consumable-electrode AC gas shield arc welding method and apparatus thereforExpiredJul 23, 90Jul 06, 93[B23K]
5208761 Method for the diameter confirmation of drills in a PWB machineExpiredJan 07, 91May 04, 93[G01B]
5064985 Method for controlling withdrawal of electrode in electric-discharge machineExpiredDec 29, 89Nov 12, 91[B23H]
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