Zbigniew Tokarski

This inventor holds 79 USPTO granted patents, primarily in Charge Transport Materials (CPC class G03G). Top assignees: Samsung Electronics Co., Ltd., Imation Corporation. Active years: 2001-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Zbigniew Tokarski. Retrieved from https://idiyas.com/inventor/zbigniew-tokarski

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 79

% Patents Active = 20.3

Average Co-Inventor Count = 4.9

ph-index = 12

Forward Citations = 475(Granted Patents)

Forward Citations (Not Self Cited) = 327(Dec 10, 2025)

Inventors with similar research interests:

Company Filing History:

77 out of 132,108

Samsung Electronics Co., Ltd.

Years Active: 2001-2009

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Areas of Expertise:

Charge Transport Materials

Electrophotographic

Organophotoreceptors

Hydrazone Compounds

Polymeric Compositions

Aromatic Groups

Azine-based Materials

Disulfane Linkage

Bicyclic Heterocycles

Toner Particles

Amphipathic Copolymers

79 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7534540 - Azine-based charge transport materials having two reactive rings (2009-05-19),

2. 7521162 - Organophotoreceptor with a charge transport material having two epoxidated-carbazolyl groups (2009-04-21),

3. 7501216 - Azine-based charge transport materials (2009-03-10),

4. 7479357 - Electrophotographic organophotoreceptors with novel charge transport materials (2009-01-20),

5. 7445877 - Charge transport materials having a central disulfane linkage (2008-11-04),

6. 7432028 - Polymeric charge transport compositions (2008-10-07),

7. 7427460 - Hydrazone-based charge transport materials having an ethylenically unsaturated group (2008-09-23),

8. 7358014 - Electrophotographic organophotoreceptors with novel charge transport compounds (2008-04-15),

9. 7354687 - Dry toner blended with wax (2008-04-08),

10. 7351508 - Organophotoreceptors with a charge transport material having multiple vinyl-containing hydrazone groups (2008-04-01),

11. 7348116 - Aromatic heterocyclic-based charge transport materials having two amino groups (2008-03-25),

12. 7348112 - Polymeric charge transport materials having repeating units comprising an aromatic group and a —S— linkage (2008-03-25),

13. 7329722 - Polymeric charge transport materials having carbazolyl repeating units (2008-02-12),

14. 7326506 - Bridged charge transport materials having a central sulfur atom linkage (2008-02-05),

15. 7320849 - Organophotoreceptor with a charge transport material having two epoxidated-hydrazone groups (2008-01-22),

Title: The Innovative Journey of Zbigniew Tokarski: A Pioneer in Charge Transport Materials

Introduction: Zbigniew Tokarski, based in Woodbury, MN, is a distinguished inventor with an impressive portfolio of 79 patents. His innovative contributions primarily focus on advancements in charge transport materials and organophotoreceptors, impacting the field of electrophotography significantly.

Latest Patents: Tokarski's latest patents showcase his dedication to innovation. One notable invention involves azine-based charge transport materials featuring two reactive rings. This improved organophotoreceptor is characterized by an electrically conductive substrate complemented by a photoconductive element. This element further includes a polymeric charge transport material, enhancing the functionalities of electrophotographic apparatuses and imaging methods. Another significant patent highlights an organophotoreceptor with charge transport material possessing two epoxidated-carbazolyl groups, emphasizing improvements in the integration of conductive substrates and photoconductive elements.

Career Highlights: Throughout his career, Tokarski has been associated with prominent companies, including Samsung Electronics Co., Ltd. and Imation Corporation. His contributions to these organizations significantly influenced the development of next-generation imaging technologies and materials, establishing him as a leading figure in his field.

Collaborations: Collaborations play a vital role in Tokarski's innovative journey. Notable coworkers, including Nusrallah Jubran and Kam Wah Law, have partnered with him on various projects, fostering a dynamic environment for creativity and technological advancements.

Conclusion: Zbigniew Tokarski's enduring commitment to innovation in charge transport materials and organophotoreceptors is evident in his extensive patent portfolio. His collaborations and contributions to leading companies have positioned him as a key inventor in the field, inspiring future generations of researchers and inventors.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]