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For the Inventor, By the Inventor

Savannah, GA, United States of America

Robert W Johnson, Jr

USPTO Granted Patents = 10

Average Co-Inventor Count = 1.2

ph-index = 7

Forward Citations = 111(Granted Patents)


Company Filing History:

goldMedal10 out of 285 
 
Union Camp Corporation
 patents

Years Active: 1986-1992

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10 patents (USPTO):Explore Patents
1. 5162496 - Method for the preparation of light-colored rosin esters (1992-11-10),
2. 5120781 - Acid-modified polyhydric alcohol rosin ester tackifiers and hot melt (1992-06-09),
3. 5023319 - Stabilization of modified rosin (1991-06-11),
4. 5019167 - Stabilized rosin esters and hot melt adhesives containing them (1991-05-28),
5. 4962186 - Method of improving the color of tall oil rosin esters by (1990-10-09),
6. 4788009 - Method of preparing rosin esters of improved thermal stability with (1988-11-29),
7. 4758379 - Process of preparing polyol esters of rosin with excess rosin (1988-07-19),
8. 4693847 - Method of preparing hot-melt stable rosin ester with organic ester of (1987-09-15),
9. 4690783 - Method of preparing rosin ester from polyol with phosphorous acid (1987-09-01),
10. 4585584 - Process for preparing rosin esters of improved color (1986-04-29),

Title: **Robert W. Johnson, Jr.: Innovator in Adhesive Technologies**

Introduction

Robert W. Johnson, Jr. is a prolific inventor based in Savannah, Georgia, with a remarkable portfolio of ten patents. His work primarily focuses on the innovative formulations and applications of rosin esters, showcasing his ingenuity with practical solutions for the adhesive industry.

Latest Patents

Johnson's latest patents include significant advancements in the area of adhesive compositions. One such patent describes a method for the preparation of light-colored rosin esters through a catalytic combination of a phosphite ester and a phenol sulfide. This unique catalyst combination accelerates the esterification reaction of rosin with polyhydric alcohol, resulting in enhanced esterified rosins, ideal for use as tackifiers in hot melt adhesives. Another notable patent revolves around acid-modified polyhydric alcohol rosin ester tackifiers, which are elevated in softening point compared to their unmodified counterparts. These modified tackifiers are integral to various hot melt adhesive compositions, applicable in sectors such as carton sealing, bookbinding, and the assembly of disposable products employing multiline construction techniques.

Career Highlights

Robert W. Johnson, Jr. has made substantial contributions to adhesive technology through his work with Union Camp Corporation. His innovative spirit and dedication to research have positioned him as an influential figure in his field, leading to patents that not only reflect his expertise but also enhance product efficiencies in industrial applications.

Collaborations

Throughout his career, Johnson has collaborated with esteemed colleagues, including Roger Logan and Kenneth E. Krajca. Their combined efforts have resulted in groundbreaking advancements in adhesive formulations, solidifying their place in the realm of innovative research and development.

Conclusion

Robert W. Johnson, Jr. stands out as a noteworthy inventor in the field of adhesive technologies. With ten patents to his name and a focus on improving the properties of rosin esters, he has played a pivotal role in enhancing the effectiveness of hot melt adhesives. His collaborations and ongoing work continue to influence the adhesive industry significantly.

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