logo

For the Inventor, By the Inventor

Liederbach, Germany

Heinrich Hamal

This inventor holds 5 USPTO granted patents. Top assignee: Hoechst Aktiengesellschaft. Active years: 1979-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Heinrich Hamal. Retrieved from https://idiyas.com/inventor/heinrich-hamal

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

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 2.1

ph-index = 3

Forward Citations = 37(Granted Patents)


Company Filing History:

goldMedal5 out of 6,705 
 
Hoechst Aktiengesellschaft
 patents

Years Active: 1979-1990

Loading Chart...
5 patents (USPTO):Explore Patents
1. 4937345 - Process for the preparation of 2-(arylamino)-3-carboxy-9(10H)-acridones (1990-06-26),
2. 4935502 - Diazo compounds, a process for their preparation and their use as (1990-06-19),
3. 4870164 - Symmetrical and asymmetrical disazo compounds having a bis-aryloxy (1989-09-26),
4. 4231964 - Nitroamines, processes for their manufacture and their use as diazo (1980-11-04),
5. 4169091 - Symmetrical and asymmetrical disazo compounds containing a (1979-09-25),

Title: Heinrich Hamal: Innovator in Chemical Processes

Introduction

Heinrich Hamal is a notable inventor based in Liederbach, Germany. He has made significant contributions to the field of chemistry, particularly in the development of innovative processes for the preparation of various chemical compounds. With a total of 5 patents to his name, Hamal's work has had a lasting impact on the industry.

Latest Patents

Hamal's latest patents include a process for the preparation of 2-(arylamino)-3-carboxy-9(10H)-acridones. This process involves cyclizing 2,5-diarylaminoterephthalic acids using polyphosphoric acid or acidic polyphosphate as a water-abstracting agent. Additionally, he has developed a method for the preparation of diazo compounds, which are useful as colorants due to their high fastness to light and heat stability.

Career Highlights

Heinrich Hamal has worked at Hoechst Aktiengesellschaft, a prominent company in the chemical industry. His innovative approaches and dedication to research have led to advancements in chemical processes that are widely recognized.

Collaborations

Hamal has collaborated with notable coworkers such as Rudolf Kuhne and Erwin Dietz. Their combined expertise has contributed to the successful development of various chemical innovations.

Conclusion

Heinrich Hamal's contributions to the field of chemistry through his patents and collaborative efforts highlight his role as a significant inventor. His work continues to influence the industry and inspire future innovations.

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]
Loading…