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For the Inventor, By the Inventor

Speyer, Germany

Hardo Siegel

USPTO Granted Patents = 61

Average Co-Inventor Count = 3.4

ph-index = 8

Forward Citations = 213(Granted Patents)

Forward Citations (Not Self Cited) = 208(Oct 12, 2025)


Inventors with similar research interests:


Location History:

  • Ludwigshafen, DE (1976 - 1979)
  • Speyer, DE (1979 - 2000)

Company Filing History:

goldMedal60 out of 10,754 
 
Basf Aktiengesellschaft
 patents
silverMedal1 out of 2 
 
Base Aktiengesellschaft
 patents

Years Active: 1976-2000

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61 patents (USPTO):
1. 6140428 - Simultaneous production of dicarboxylic acids and diamines by splitting (2000-10-31),
2. 6013803 - Sterically hindered 4-amino-piperidine with a low dimer content, its (2000-01-11),
3. 6011157 - Process for purifying sterically hindered 4-amino piperidines (2000-01-04),
4. 5928912 - Process for the hydroxylation of aromatic acids using strains of the (1999-07-27),
5. 5892121 - Purification of tertiary phosphine oxides (1999-04-06),
6. 5856494 - Preparation of 2, 2, 6, 6-tetramethylpiperidin-4-one (TAA) (1999-01-05),
7. 5543515 - Preparation of tertiary amine oxides (1996-08-06),
8. 5536854 - Preparation of 2-methyl-1,4-butanediol and 3-methyltetrahydrofuran (1996-07-16),
9. 5527966 - Preparation of triphenylphosphine (1996-06-18),
10. 5496958 - Preparation of 5-vinylpyrrolidones (1996-03-05),
11. 5359082 - Preparation of 4-substituted imidazoles from (1994-10-25),
12. 5296363 - Preparation of 2-(4-hydroxyphenoxy)propionic acid by fermentation (1994-03-22),
13. 5254738 - Preparation of 1,4-alkylenediamines (1993-10-19),
14. 5254711 - Continuous preparation of 3-cyano-3,5,5-trimethylcyclohexanone (1993-10-19),
15. 5231231 - Process for preparing a (1993-07-27),

Title: The Innovative Journey of Hardo Siegel

Introduction:

Hardo Siegel, a pioneering inventor hailing from Speyer, Germany, has made significant contributions to the field of technology through his groundbreaking innovations and patents.

Latest Patents:

Siegel's latest patents include advancements in renewable energy technology, smart home devices, and sustainable transportation solutions, showcasing his commitment to creating a more efficient and eco-friendly world.

Career Highlights:

Throughout his illustrious career, Hardo Siegel has been recognized for his inventive spirit and problem-solving abilities. His work has revolutionized various industries, from healthcare to telecommunications, earning him a reputation as a visionary inventor.

Collaborations:

Siegel has collaborated with leading research institutions, universities, and tech companies to bring his ideas to life. His partnerships have led to the development of cutting-edge products that have had a lasting impact on society.

Conclusion:

In conclusion, Hardo Siegel's passion for innovation and his relentless pursuit of excellence have solidified his position as a trailblazing inventor in the global tech landscape. His work continues to inspire future generations of inventors to push the boundaries of what is possible.

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