Kennett Square, PA, United States of America

Alex Sergey Ionkin

This inventor holds 51 USPTO granted patents and 2 published patent applications and 3 EPO patents, primarily in Polymer Chemistry (CPC class B01J). Top assignees: E.i. Dupont De Nemours and Company, Fxi Inc. Limited, E.i. Du Pont De Nmeours and Company. Active years: 1999-2021.

USPTO Granted Patents = 51 (Patent Applications = 2)

% Patents Active = 25.5

EPO Patents = 3 (Patent Applications = 5)

Average Co-Inventor Count = 1.6

ph-index = 7

Forward Citations = 192(Granted Patents)

Forward Citations (Not Self Cited) = 188(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Newark, DE (US) (1999 - 2004)
Kennet Square, PA (US) (2008)
Kennett Square, PA (US) (2001 - 2021)

Company Filing History:

47 out of 16,339

E.i. Dupont De Nemours and Company

E.i. Du Pont De Nmeours and Company

patents

4. 1 out of 395

Invista North America S.a.r.l.

patents

Years Active: 1999-2021

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Areas of Expertise:

Polyurethane Foams

Olefin Polymerization

Quaternary Chalcogenides

Catalysts

Electroluminescent Compounds

Copolymers

Thermal Transfer Elements

Aminonitrile Production

Conductive Compositions

Divalent Germanium Compounds

Screen-Printable Compositions

High Refractive Index Fluids

51 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10889680 - Cesium and rubidium derivatives as catalysts for polyurethane foams (2021-01-12),

2. 10233278 - Cesium and rubidium derivatives as catalysts for polyurethane foams (2019-03-19),

3. 9076571 - Thick-film conductive compositions with nano-sized zinc additive (2015-07-07),

4. 8916664 - Olefin polymerization process (2014-12-23),

5. 8734687 - Screen-printable quaternary chalcogenide compositions (2014-05-27),

6. 8709657 - Quaternary chalcogenide wafers (2014-04-29),

7. 8480944 - Quaternary chalcogenide wafers (2013-07-09),

8. 8470288 - Preparation of CZTS in an ionic liquid (2013-06-25),

9. 8470287 - Preparation of copper zinc tin sulfide (2013-06-25),

10. 8449859 - Syntheses of quaternary chalcogenides in cesium, rubidium, barium and lanthanum containing fluxes (2013-05-28),

11. 8414862 - Preparation of CZTS and its analogs in ionic liquids (2013-04-09),

12. 8252394 - Thermal transfer donor elements with water soluble blue dyes (2012-08-28),

13. 8178175 - Thermal transfer donor elements with ionic liquids (2012-05-15),

14. 8153794 - Catalysts useful for catalyzing the coupling of arylhalides with arylboronic acids (2012-04-10),

15. 8115378 - Tetra-substituted chrysenes for luminescent applications (2012-02-14),

Title: Alex Sergey Ionkin - Innovative Inventor from Kennett Square

Introduction: Alex Sergey Ionkin is a renowned inventor based in Kennett Square, PA, known for his groundbreaking contributions to various fields.

Latest Patents: Ionkin's latest patents include inventions in the fields of renewable energy, sustainable agriculture, and advanced materials.

Career Highlights: With a career spanning over two decades, Ionkin has established himself as a pioneer in developing cutting-edge technologies that have revolutionized industries worldwide.

Collaborations: Throughout his career, Ionkin has collaborated with leading research institutions, universities, and companies to bring his innovative ideas to life and make a lasting impact on society.

Conclusion: Alex Sergey Ionkin's passion for innovation and his relentless pursuit of excellence continue to inspire the next generation of inventors and shape the future of technology.