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Pioneering EE Patents: Automatic Spell Check

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Ed Suominen

Jun 1, 1999, 3:00:00 AM6/1/99
Pioneering EE Patent, featured June 1-14
"System for Automatically Proofreading a Document"
Issued 1979 to IBM for automatic spell check.
Get a free abridged copy of this historic patent
(or just view a summary) at

This patent added automation to the basic concept of spell check,
which had been known for at least a few years as of its filing date.
The result was the first implementation of the "Ignore All" and
"Change All" features of your word processor's spell checker.

Upcoming features will include the original patents for interrupt-
driven processing and the word processor. For the last half of
May, the featured patent was "Multicoordinate Digital Information
Storage Device" issued 1956, for the row-column address RAM.
It's archived at

Ed Suominen
Registered Patent Agent
Former R&D Engineer, RF/DSP
Web Site:

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