Company Filing History:

4 out of 42,485

Hitachi, Ltd.

patents

Years Active: 1979-1989

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4 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4876458 - Apparatus for measuring particles in liquid (1989-10-24),

2. 4581578 - Apparatus for measuring carrier lifetimes of a semiconductor wafer (1986-04-08),

3. 4563642 - Apparatus for nondestructively measuring characteristics of a (1986-01-07),

4. 4168512 - Optical system for an image pickup device (1979-09-18),

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Location History:

Company Filing History:

Years Active: 1979-1989