William J Schaffer

This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignee: International Business Machines Corporation. Active years: 1979-1987.

USPTO Granted Patents = 2 (Patent Applications = 1)

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 2

Forward Citations = 18(Granted Patents)

Company Filing History:

2 out of 166,264

International Business Machines Corporation

patents

Years Active: 1979-1987

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2 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4669076 - Optical disk drive apparatus with means for accurate disk positioning (1987-05-26),

2. 4176382 - High performance tape path for a 19 inch tape recorder (1979-11-27),

Profile summary based on public USPTO records.

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1 patent pending:

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