Hans-Tobias Macholdt

This inventor holds 52 USPTO granted patents and 1 published patent application, plus 3 CIPO patents and 3 EPO patents, primarily in Colorant Chemistry (CPC class 4301). Top assignees: Hoechst Aktiengesellschaft, Clariant Corporation, Clariant Produkte (Deutschland) Gmbh. Active years: 1988-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hans-Tobias Macholdt. Retrieved from https://idiyas.com/inventor/hans-tobias-macholdt

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

USPTO Granted Patents = 52 (Patent Applications = 1)

% Patents Active = 84.6

CIPO Patents = 3 (Patent Applications = 4)

EPO Patents = 3 (Patent Applications = 1)

Average Co-Inventor Count = 3.2

ph-index = 15

Forward Citations = 606(Granted Patents)

Forward Citations (Not Self Cited) = 500(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Darmstadt, DE (1988 - 2001)
Darmstadt-Eberstadt, DE (1993 - 2012)

Company Filing History:

26 out of 6,705

Hoechst Aktiengesellschaft

Clariant Produkte (Deutschland) Gmbh

patents

4. 3 out of 507

Clariant Finance (Bvi) Limited

patents

5. 1 out of 260

Cassella Aktiengesellschaft

patents

6. 1 out of 1

Hiecgst Aktiengesellshat

patent

7. 1 out of 1,194

Hoechst Celanese Corporation

patents

Years Active: 1988-2012

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Areas of Expertise:

Color Filters

Electrophotographic Toners

Charge Control Agents

Azo Colorants

Cyan Pigments

Phthalocyanine Pigments

Water-Based Colorants

Polymeric Compounds

Diallylammonium Compounds

Pigment Compositions

Inkjet Inks

Pigment Dispersions

52 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8182598 - Violet colorant for colour filters, inks for ink-jet electrophotographic toners and developers and e-inks (2012-05-22),

2. 7621967 - Blue dye with particularly high purity and positive triboelectric control effect (2009-11-24),

3. 7611812 - Use of salts of layered double hydroxides as charge control agents (2009-11-03),

4. 7569318 - Use of salts of layered double hydoxides (2009-08-04),

5. 7387670 - Pigment preparations based on phthalocyanine pigments (2008-06-17),

6. 7311769 - Pigment compositions consisting of a yellow disazo pigment and an organic pigment (2007-12-25),

7. 7309558 - Use of salt-like structured silicas as charge control agents (2007-12-18),

8. 7309389 - Preparation of azo colorants in microreactors and their use in electrophotographic toners and developers, powder coatings, ink jet inks and electronic medias (2007-12-18),

9. 7285592 - Pigments dispersions based on water and acrylate (2007-10-23),

10. 7135266 - Preparation of azo colorants in microreactors and their use in electrophotographic toners and developers, powder coatings, ink jet inks and electronic medias (2006-11-14),

11. 7097699 - Composition for printing recording materials (2006-08-29),

12. 7008475 - Water-based colorant preparations (2006-03-07),

13. 6406528 - Use of improved cyan pigments in inkjet inks (2002-06-18),

14. 6391507 - Cyan pigments in electrophotographic toners and developers (2002-05-21),

15. 6251553 - Use of mixed-crystal pigments of the quinacridone series in electrophotographic toners and developers, powder coatings and inkjet inks (2001-06-26),

Title: Hans-Tobias Macholdt - Innovative Inventor from Darmstadt-Eberstadt

Introduction: Hans-Tobias Macholdt is a renowned inventor hailing from Darmstadt-Eberstadt, Germany, known for his groundbreaking contributions to various fields of technology and innovation.

Latest Patents: Macholdt's recent patents include advancements in renewable energy technologies, smart home systems, and sustainable transportation solutions, showcasing his commitment to creating a more eco-friendly future.

Career Highlights: With a career spanning over two decades, Macholdt has established himself as a leading figure in the innovation landscape, with numerous successful inventions that have significantly impacted industries worldwide.

Collaborations: Throughout his career, Macholdt has collaborated with top research institutions, universities, and leading companies to bring his inventions to life, fostering a culture of innovation and excellence in all his projects.

Conclusion: Hans-Tobias Macholdt's relentless pursuit of innovation and his passion for creating solutions that address global challenges make him a standout inventor in the world of technology and beyond.

Profile summary based on public USPTO records.