Stephan V Drappel

This inventor holds 132 USPTO granted patents and 4 published patent applications, plus 40 CIPO patents and 11 EPO patents, primarily in Phase Change Inks (CPC class C09D11-34). Top assignees: Xerox Corporation, Palo Alto Research Center Inc.. Active years: 1989-2017.

USPTO Granted Patents = 132 (Patent Applications = 4)

% Patents Active = 66.7

CIPO Patents = 40

EPO Patents = 11 (Patent Applications = 7)

Average Co-Inventor Count = 4.6

ph-index = 22

Forward Citations = 1,689(Granted Patents)

Forward Citations (Not Self Cited) = 1,597(Dec 10, 2025)

Inventors with similar research interests:

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Location History:

Toront, CA (2010)
Mississauga, CA (US) (2011)
Ontario, CA (2011 - 2012)
Mississauga, CA (2010 - 2013)
Toronto, CA (1989 - 2017)

Company Filing History:

Palo Alto Research Center Inc.

patents

where one patent can have more than one assignee

Years Active: 1989-2017

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Areas of Expertise:

Phase Change Inks

Amorphous Materials

Colorant Compounds

Photochromic Compositions

Crystalline Gellants

Dye Compounds

Solid Ink Compositions

Digital Offset Printing

Boron Subphthalocyanine

Low Polarity Nano Silver

Substituted Oxazoline

Polyester Inks

132 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 9738811 - Phase change inks containing wax-soluble near-infrared dyes (2017-08-22),

2. 9422440 - Bis-ureas as amorphous materials for phase-change ink (2016-08-23),

3. 9394319 - Boron subphthalocyanine compounds and method of making (2016-07-19),

4. 9309410 - Colorant compounds (2016-04-12),

5. 9228097 - Phase change inks (2016-01-05),

6. 9193883 - Phase change ink containing polyester for improved image robustness (2015-11-24),

7. 9193869 - Dye compounds, method of making the compounds and ink composition employing the compounds (2015-11-24),

8. 9109131 - Photochromic phase change ink compositions (2015-08-18),

9. 9096767 - Curable solid inks containing cyclohexyl-based crystalline gellants (2015-08-04),

10. 9056998 - Crystalline compounds for phase change inks (2015-06-16),

11. 9051486 - Phase change ink components and methods of making the same (2015-06-09),

12. 9005708 - Undercoat composition for ink jet printing (2015-04-14),

13. 9005484 - Low polarity nano silver gels (2015-04-14),

14. 8999444 - Overcoat composition for ink jet printing (2015-04-07),

15. 8981088 - Boron subphthalocyanine compounds and method of making (2015-03-17),

Title: Inventor Stephan V Drappel

Introduction: Stephan V Drappel is a renowned inventor based in Toronto, Canada, known for his groundbreaking innovations in various fields.

Latest Patents: Stephan V Drappel holds several patents in the areas of technology, healthcare, and sustainable energy, showcasing his diverse range of expertise.

Career Highlights: Throughout his career, Stephan V Drappel has been recognized for his contributions to the industry, receiving numerous awards for his innovative solutions and forward-thinking approach.

Collaborations: Stephan V Drappel has collaborated with leading companies, research institutions, and universities worldwide to further develop and implement his inventions, solidifying his reputation as a visionary inventor.

Conclusion: Stephan V Drappel's passion for innovation and dedication to creating impactful solutions have cemented his legacy as a pioneering inventor in the global landscape of technology and beyond.