Inventor · disambiguated record
Hiroyuki Sumiya
Also filed as: SUMIYA HIROYUKI
4 granted patents·75 citations·filing 1976–1992
77Inventor score
Top patents by PatentIndex Score
4 records- 0179US4992661AMethod and apparatus for neutralizing an accumulated charge on a specimen by means of a conductive lattice deposited on the specimenHITACHI LTD·Filed 1988·Granted Feb 12, 1991·32 cites·31 claims
- 0261US5278407ASecondary-ion mass spectrometry apparatus using field limiting methodHITACHI LTD·Filed 1992·Granted Jan 11, 1994·29 cites·10 claims
- 0354US4058754AMalfunction indication apparatus for use in a CRT deflection circuitSONY CORP·Filed 1976·Granted Nov 15, 1977·9 cites·12 claims
- 0439US4090110AConvergence means for color cathode ray tubeSONY CORP·Filed 1976·Granted May 16, 1978·5 cites·10 claims
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