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Charleston, SC, United States of America

Gerald Prazak

This inventor holds 5 USPTO granted patents. Top assignee: Westvaco Corporation. Active years: 1977-1990.

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 1.9

ph-index = 4

Forward Citations = 63(Granted Patents)

Company Filing History:

Westvaco Corporation

Years Active: 1977-1990

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5 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4892588 - Production of lignosulfonate additives (1990-01-09),

2. 4892587 - Lignosulfonate additive-containing carbon black compositions (1990-01-09),

3. 4355996 - Azo dye reduction improvement of lignin (1982-10-26),

4. 4025303 - Dyestuff compositions containing modified sulfonated lignin dye (1977-05-24),

5. 4001202 - Process for making sulfonated lignin surfactants (1977-01-04),

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