For the Inventor, By the Inventor

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Haledon, NJ, United States of America

Harmon Colors Corporation

USPTO Granted Patents = 3

Forward Citations = 10

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4 inventors (with patents filed for the assignee):

Robert Jarl North (2 out of 2 patents)

Herman Gerson (1 out of 5 patents)

John Francis Santimauro (1 out of 2 patents)

4. Lawrence Robert Lerner (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 4100162 - Process for preparing gamma quinacridone from polyphosphoric acid and (1978-07-11),

2. 4099980 - Process for producing gamma quinacridone solid solutions (1978-07-11),

3. 4064129 - Process for making quinacridone and its derivatives (1977-12-20),

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USPTO Data Jan 1 1976 - Dec 23 2025

3 Patents

#1 in Haledon, NJ

#2,618 in New Jersey

#71,950 in US

Haledon, NJ, United States of America

Harmon Colors Corporation

Forward Citations = 10

4 inventors:

Robert Jarl North (2 out of 2 patents)

Herman Gerson (1 out of 5 patents)

John Francis Santimauro (1 out of 2 patents)

4. Lawrence Robert Lerner (1 out of 1 patent)

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