Watanabe; Atsumi

Patent Applications and Registrations

Patent applications and USPTO patent grants for Watanabe; Atsumi.The latest application filed is for "optical memory medium and its information recording and erasing method and apparatus".

Company Profile

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Watanabe; Atsumi - Yokohama JP
Watanabe; Atsumi - Hitachi JP
Watanabe; Atsumi - Ibaraki JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Optical memory medium and its information recording and erasing method and apparatus Grant 5,177,717 - Sato , et al. January 5, 1	1993-01-05
Optical recording method and apparatus using two fight spots Grant 4,841,514 - Tsuboi , et al. June 20, 1	1989-06-20
Beam spot control device using a thin micro lens with an actuator Grant 4,775,967 - Shimada , et al. October 4, 1	1988-10-04
Optical information apparatus and method of recording and erasing information Grant 4,718,053 - Sato , et al. January 5, 1	1988-01-05
Combustion control method Grant 4,622,922 - Miyagaki , et al. November 18, 1	1986-11-18
Method and system of controlling high voltage direct current power transmission plants Grant 4,210,956 - Watanabe July 1, 1	1980-07-01
Inverter control system Grant 4,028,607 - Watanabe June 7, 1	1977-06-07
Frequency regulating device for A.C. systems interconnected through D.C. systems Grant 3,906,335 - Watanabe , et al. September 16, 1	1975-09-16
Converter control system with tapped transformer providing constant no-load secondary voltage Grant 3,886,433 - Watanabe May 27, 1	1975-05-27

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