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For the Inventor, By the Inventor

Leverkusen, Germany

Walter Hohmann

USPTO Granted Patents = 19

Average Co-Inventor Count = 2.3

ph-index = 3

Forward Citations = 21(Granted Patents)


Company Filing History:

goldMedal19 out of 12,157 
 
Bayer Aktiengesellschaft
 patents

Years Active: 1976-1985

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19 patents (USPTO):Explore Patents
1. 4492790 - Vat dyestuffs of the trisanthraquinonylaminotriazine series (1985-01-08),
2. 4408056 - Anthraquinone vat dyestuffs (1983-10-04),
3. 4259248 - Process for the preparation of mixtures of dinitroanthraquinones with a (1981-03-31),
4. 4213909 - Process for the preparation of 1-amino-4-bromoanthraquinone-2-sulfonic (1980-07-22),
5. 4210413 - Transfer printing process (1980-07-01),
6. 4206130 - Process for the preparation of 1,5-dichloroanthraquinone (1980-06-03),
7. 4203885 - Process for the mononitration of anthraquinone (1980-05-20),
8. 4166822 - Branched-chain alkyl amino anthraquinones (1979-09-04),
9. 4155921 - Process for the isolation of 1,6- and 1,7-dinitroanthraquinone (1979-05-22),
10. 4153608 - Anthraquinone vat dyestuffs (1979-05-08),
11. 4115412 - Process for dyeing textiles (1978-09-19),
12. 4104284 - Nitroanthraquinones (1978-08-01),
13. 4056544 - Anthraquinone compounds (1977-11-01),
14. 4041053 - Process for the preparation of anthraquinone compounds (1977-08-09),
15. 4000167 - Nitroanthraquinones (1976-12-28),

Title: **Walter Hohmann: A Pioneer in Vat Dyestuffs Innovation**

Introduction

Walter Hohmann is a prominent inventor based in Leverkusen, Germany, known for his significant contributions to the field of vat dyestuffs. With a remarkable portfolio of 19 patents, Hohmann has dedicated his career to the development of innovative chemical compounds that enhance textile dyeing processes.

Latest Patents

Among his latest patents, Hohmann has focused on the trisanthraquinonylaminotriazine series. These vat dyestuffs contain at least 80% by weight of specific compounds, showcasing the versatility and effectiveness of his formulations. Notably, his work includes the invention of anthraquinone vat dyestuffs along with nitrotrianthrimidecarbazoles, characterized by their NO₂ group positioned at either the alpha- or beta-position. His contributions also extend to processes for the preparation of these compounds, emphasizing their potential uses in dyeing applications.

Career Highlights

Walter Hohmann's career at Bayer Aktiengesellschaft has marked significant advancements in the dye manufacturing sector. His innovative approaches have greatly influenced the quality and performance of vat dyestuffs, making them essential components in various textile applications. Hohmann's extensive research and development efforts reflect his commitment to pushing the boundaries of chemical engineering.

Collaborations

Throughout his career, Hohmann has collaborated with notable colleagues, including Hans-Samuel Bien and Klaus Wunderlich. These partnerships have fostered an environment of innovation and have played a crucial role in the successful development and commercialization of new dyestuff technologies.

Conclusion

Walter Hohmann's contributions to the field of vat dyestuffs through his patents and collaborative efforts signify his status as a leading inventor in his domain. His work continues to impact the textile industry positively, ensuring the ongoing evolution of dyeing processes and products.

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