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For the Inventor, By the Inventor

Leverkusen, Germany

Dieter Grenner

This inventor holds 10 USPTO granted patents. Top assignee: Bayer Aktiengesellschaft. Active years: 1978-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Dieter Grenner. Retrieved from https://idiyas.com/inventor/dieter-grenner

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

Calculating rank
USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 3.8

ph-index = 4

Forward Citations = 37(Granted Patents)


Location History:

  • Dormagen, DE (1978 - 1984)
  • Leverkusen, DE (1995 - 2001)

Company Filing History:

goldMedal10 out of 12,269 
 
Bayer Aktiengesellschaft
 patents

Years Active: 1978-2001

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10 patents (USPTO):Explore Patents
1. 6271414 - Process for the isomeric separation of isocyanates (2001-08-07),
2. 6156288 - Process for purifying and concentrating spent sulfuric acids (2000-12-05),
3. 6048508 - Process for obtaining carbon monoxide and hydrogen (2000-04-11),
4. 5817211 - Process and device for continuous evaporation to dryness of viscous (1998-10-06),
5. 5609735 - Process and a device for separating a solid residue from its solution in (1997-03-11),
6. 5563296 - Continuous process for preparing aromatic amines (1996-10-08),
7. 5395995 - Process for the preparation and purification of nitroaromatics (1995-03-07),
8. 4430156 - Process for drying pumpable suspensions (1984-02-07),
9. 4168283 - Process for drying copper containing catalyst waste (1979-09-18),
10. 4070405 - Process for working up liquid copper-containing catalyst waste from (1978-01-24),

Title: The Innovative Contributions of Dieter Grenner

Introduction

Dieter Grenner is a notable inventor based in Leverkusen, Germany. He has made significant contributions to the field of chemical engineering, particularly in the area of isocyanate separation and sulfuric acid purification. With a total of 10 patents to his name, Grenner's work has had a substantial impact on industrial processes.

Latest Patents

One of Grenner's latest patents is a process for the isomeric separation of isocyanates. This innovative method involves obtaining pure isocyanate isomers from a mixture through suspension crystallization. The process is characterized by remelting 5 to 40% by weight of the produced crystals while increasing the temperature of the crystal slurry by 4.5 to 9°C prior to isolation. Another significant patent focuses on purifying and concentrating spent sulfuric acids. This process addresses the purification of sulfuric acid contaminated with various impurities, including nitric acid and nitrosylsulfuric acid. The method involves preheating the contaminated sulfuric acid and using a steam stripper to remove steam-volatile impurities, ultimately producing sulfuric acid with a concentration of 88 to 97 percent by weight.

Career Highlights

Dieter Grenner has built a successful career at Bayer Aktiengesellschaft, where he has been instrumental in developing innovative chemical processes. His expertise in chemical engineering has led to advancements that enhance the efficiency and safety of industrial operations.

Collaborations

Grenner has collaborated with esteemed colleagues such as Hartmut Hetzel and Clemens Casper. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Dieter Grenner's contributions to the field of chemical engineering are noteworthy, with his patents reflecting a commitment to innovation and efficiency. His work continues to influence industrial practices and showcases the importance of inventive thinking in advancing technology.

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]
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