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For the Inventor, By the Inventor

Krefeld, Germany

Hans-Helmut Schwarz

USPTO Granted Patents = 39

Average Co-Inventor Count = 2.7

ph-index = 10

Forward Citations = 252(Granted Patents)


Location History:

  • Krefeld-Traar, DE (1976 - 1980)
  • Krefeld, DE (1976 - 1993)

Company Filing History:

goldMedal38 out of 12,157 
 
Bayer Aktiengesellschaft
 patents
silverMedal1 out of 113 
 
Haarmann & Reimer Gmbh
 patents

Years Active: 1976-1993

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39 patents (USPTO):Explore Patents
1. 5245082 - Process for the production of di-(4-aminocyclohexyl)-methane containing (1993-09-14),
2. 5233105 - Process for halogen-fluorine exchange in organic compounds and catalysts (1993-08-03),
3. 5180861 - Process for the preparation of polychloro-fluoro-cyclo-pentenes (1993-01-19),
4. 5174985 - Process for the oxidation of water-insoluble organic compounds (1992-12-29),
5. 5171901 - Process for the preparation of 1,1,1,3,3,3-hexafluoropropane and (1992-12-15),
6. 5097071 - Supported copper catalyst, process for its preparation and process for (1992-03-17),
7. 5023226 - Ruthenium supported catalyst, its preparation and its use in the (1991-06-11),
8. 4952549 - Ruthenium catalyst, process for its preparation and process for the (1990-08-28),
9. 4943549 - Supported ruthenium catalyst, its preparation and its use in the (1990-07-24),
10. 4902661 - Rhodium catalysts, process for their preparation and process for the (1990-02-20),
11. 4804753 - Process for the preparation of Schiff's bases (1989-02-14),
12. 4729977 - Supported catalyst, process for its preparation and its use for the (1988-03-08),
13. 4588833 - Process for the preparation of substituted succinic acid amides (1986-05-13),
14. 4514578 - Process for the preparation of trimethylolpropane (1985-04-30),
15. 4371691 - Preparation of polycarbonate from specific crude bisphenols (1983-02-01),

Title: **Hans-Helmut Schwarz: A Pioneer in Chemical Innovations**

Introduction

Hans-Helmut Schwarz, based in Krefeld, Germany, is a notable inventor with an impressive portfolio of 39 patents. His work primarily focuses on advancements in chemical processes, contributing significantly to the field of organic compounds.

Latest Patents

Among his latest innovations, Schwarz has developed a process for the production of di-(4-aminocyclohexyl)-methane. This process involves the catalytic hydrogenation of di-(4-aminophenyl)-methane under elevated temperature and pressure, utilizing a ruthenium-containing supported catalyst. His patent specifies that the catalyst comprises 0.05 to 5% by weight of ruthenium on an Al.sub.2 O.sub.3 support, treated with compounds of rare earth metals and manganese.

Additionally, he has patented a method for halogen-fluorine exchange in organic compounds using bismuth/alkaline earth metal catalysts. This innovation can involve 0.005-0.8 g-atom of bismuth for each mole of the alkaline earth metal compound and can include promoters or inert additives. Lanthanide catalysts may also be utilized in this exchange process with or without catalyst supports.

Career Highlights

Schwarz's esteemed career includes key positions at Bayer Aktiengesellschaft and Haarmann & Reimer GmbH. His contributions at these companies have played a vital role in his development of innovative chemical processes and compounds.

Collaborations

Throughout his career, Schwarz has collaborated with notable professionals, including colleagues Otto Immel and Oskar Weissel. These partnerships have likely fostered a rich exchange of ideas, enhancing his research and innovation output.

Conclusion

Hans-Helmut Schwarz remains a significant figure in the world of chemical innovation. With a strong patent portfolio and impactful collaborations, his work continues to influence advancements in chemical engineering and the production of organic compounds.

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