Company Filing History:

8 out of 12,157

Bayer Aktiengesellschaft

where one patent can have more than one assignee

Years Active: 1992-2001

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11 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6174635 - Electrophotographic recording material containing metal-free phthalocyanines (2001-01-16),

2. 5721080 - Electrophotographic material containing particular phthalocyanines (1998-02-24),

3. 5525152 - Pigment salts and their use for dyeing and pigmenting (1996-06-11),

4. 5386051 - Process for the preparation of 1,2,3-tricyanobenzene, phthalocyanines (1995-01-31),

5. 5367069 - Metal-free, substituted phthalocyanines in the .chi.-modification (1994-11-22),

6. 5326872 - Process for preparation of asymmetric isoindoline pigments (1994-07-05),

7. 5194626 - Metal complex pigments of azines (1993-03-16),

8. 5177209 - Process for preparation of asymmetric isoindoline pigments (1993-01-05),

9. 5162518 - Heterocyclic compounds and porphyrin compounds obtainable therefrom (1992-11-10),

10. 5134048 - Electrophotographic recording material containing photoconductive (1992-07-28),

11. 5091532 - Process for the preparation of pigments based on isoindole (1992-02-25),

Title: Bernd Kaletta: Innovator in Electrophotographic Materials

Introduction

Bernd Kaletta is a prominent inventor based in Leverkusen, Germany. He has made significant contributions to the field of electrophotographic materials, holding a total of 11 patents. His work focuses on the development of advanced recording materials that utilize innovative compounds.

Latest Patents

Kaletta's latest patents include groundbreaking advancements in electrophotographic recording materials. One notable patent describes an electrophotographic recording material that contains metal-free phthalocyanines. This material comprises a conductive support and a photosensitive layer featuring a photoconductive crystalline substituted metal-free phthalocyanine compound. The compound is characterized by specific substituents such as halogen, nitro, or cyano, and is present in a particular morphological form. Another patent highlights an electrophotographic material that incorporates specific phthalocyanines, further enhancing the functionality and efficiency of the recording process.

Career Highlights

Throughout his career, Bernd Kaletta has worked with leading companies in the industry, including Bayer Aktiengesellschaft and Agfa Gevaert NV. His experience in these organizations has allowed him to refine his expertise and contribute to significant advancements in electrophotographic technology.

Collaborations

Kaletta has collaborated with notable professionals in his field, including David R. Terrell and Stefaan K. De Meutter. These collaborations have fostered innovation and have been instrumental in the development of his patented technologies.

Conclusion

Bernd Kaletta's contributions to electrophotographic materials have established him as a key figure in the field. His innovative patents and collaborations reflect his commitment to advancing technology in this area. His work continues to influence the industry and inspire future innovations.

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