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For the Inventor, By the Inventor

Frenkendorf, Switzerland

Heinz Spahni

USPTO Granted Patents = 13

Average Co-Inventor Count = 4.2

ph-index = 6

Forward Citations = 90(Granted Patents)


Company Filing History:

goldMedal9 out of 6,850 
 
Ciba-geigy Corporation
 patents
silverMedal4 out of 1,524 
 
Ciba Specialty Chemicals Corporation
 patents

Years Active: 1992-2008

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13 patents (USPTO):Explore Patents
1. 7378221 - Metallocenyl phthalocyanines as optical recording media (2008-05-27),
2. 7034148 - Metallocenyl phthalocyanines as optical recording media (2006-04-25),
3. 6849315 - Fast-writable and precision-writable high-capacity optical storage media (2005-02-01),
4. 6245403 - Writable and erasable high-density optical storage media (2001-06-12),
5. 5641879 - Phthalocyanines substituted by phosphorus-containing groups (1997-06-24),
6. 5407885 - Photochromic naphthacenequinones, process for their preparation and the (1995-04-18),
7. 5300663 - Photochromic naphthacenequinones, process for their preparation and the (1994-04-05),
8. 5225525 - Photochromic benzothioxanthone oxides, process for their preparation and (1993-07-06),
9. 5208354 - Photochromic naphthacenequinones, process for their preparation and the (1993-05-04),
10. 5206395 - Photochromic naphthacenequinones, process for their preparation and the (1993-04-27),
11. 5177227 - Photochromic naphthacenequinones, process for their preparation and the (1993-01-05),
12. 5177218 - Photochromic benzothioxanthone oxides, process for their preparation and (1993-01-05),
13. 5116674 - Composite structure (1992-05-26),

Title: Heinz Spahni: Innovator in Optical Recording Media

Introduction

Heinz Spahni is a notable inventor based in Frenkendorf, Switzerland. He has made significant contributions to the field of optical recording media, holding a total of 13 patents. His work has advanced the understanding and application of metallocenyl phthalocyanines in various technologies.

Latest Patents

Among his latest patents, Heinz Spahni has developed innovative mixtures of metallocenyl phthalocyanines. These mixtures are obtainable by reacting a combination of two phthalocyanines with a metallocene derivative in the presence of a catalyst. His patents also cover oligomeric metallocenyl phthalocyanines and their processes for preparation. These inventions are particularly useful for optical recording and the development of optical recording media.

Career Highlights

Heinz Spahni has had a distinguished career, working with prominent companies such as Ciba-Geigy Corporation and Ciba Specialty Chemicals Corporation. His experience in these organizations has allowed him to refine his expertise in chemical engineering and optical technologies.

Collaborations

Heinz has collaborated with notable professionals in his field, including Walter Fischer and Jurgen Finter. These partnerships have contributed to the advancement of his research and innovations.

Conclusion

Heinz Spahni's contributions to the field of optical recording media through his patents and collaborations highlight his role as a significant inventor. His work continues to influence advancements in technology and materials science.

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