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For the Inventor, By the Inventor

Ludwigshafen, Germany

Karl-Heinz Feuerherd

This inventor holds 13 USPTO granted patents. Top assignees: Basf Aktiengesellschaft, Basfaktiengesellschaft. Active years: 1981-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Karl-Heinz Feuerherd. Retrieved from https://idiyas.com/inventor/karl-heinz-feuerherd

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

Calculating rank
USPTO Granted Patents = 13

% Patents Active = 100.0

Average Co-Inventor Count = 3.1

ph-index = 3

Forward Citations = 46(Granted Patents)


Location History:

  • Ludwigshafen, DE (1981 - 1983)
  • Hettenleidelheim, DE (1990 - 1992)

Company Filing History:

goldMedal12 out of 10,816 
 
Basf Aktiengesellschaft
 patents
silverMedal1 out of 52 
 
Basfaktiengesellschaft
 patents

Years Active: 1981-1992

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13 patents (USPTO):Explore Patents
1. 5130356 - Molding for optical purposes (1992-07-14),
2. 4966798 - Optical recording medium (1990-10-30),
3. 4411752 - Preparation of 1-monochloroethylcarbamyl chloride (1983-10-25),
4. 4399256 - Surface-coating binders containing blocked isocyanate groups, and their (1983-08-16),
5. 4385925 - 1,3-Dioxan-5-yl-alkyltriazoles, their preparation, their use for (1983-05-31),
6. 4376776 - Dibenzofuran derivatives and their use for controlling fungi (1983-03-15),
7. 4368066 - 1,3-Dioxan-5-yl-alkenyltriazoles, their preparation, their uses in (1983-01-11),
8. 4344891 - Halogenated tertiary alkyl isocyanates and their preparation (1982-08-17),
9. 4336346 - Copolymers containing blocked isocyanate groups, and their use in anodic (1982-06-22),
10. 4314948 - Preparation of mixtures of 1-monohalogenated isocyanates and (1982-02-09),
11. 4297300 - Novel .alpha.-haloalkylcarbamic acid halides, and a process for the (1981-10-27),
12. 4294773 - Preparation of 1-haloalkyl isocyanates and 1-alkenyl isocyanates (1981-10-13),
13. 4257974 - Process for the preparation of .alpha.,.beta.-dihaloalkyl isocyanates (1981-03-24),

Title: The Innovative Contributions of Karl-Heinz Feuerherd

Introduction

Karl-Heinz Feuerherd is a notable inventor based in Ludwigshafen, Germany. He has made significant contributions to the field of optical materials, holding a total of 13 patents. His work focuses on developing novel materials that enhance the performance of optical devices.

Latest Patents

One of Feuerherd's latest patents is for a molding designed for optical purposes. This innovative molding is optically transparent and isotropic, free of orientation birefringence. It consists of a mixture of polyphenylene ethers, vinylaromatic polymers, and specific additives. The molding contains traces of novel diphenoquinone and/or diphenohydroquinone derivatives, along with ammonium salts of sulfuric acid half esters of diphenohydroquinones. It has a yellowness index (YI) ranging from 40 to 90 and can be produced through simple injection molding processes. This molding, particularly in the form of a circular disk with a central hole, serves as a dimensionally stable substrate for various data media, including audio compact disks (CDs) and laser-optical computer disks.

Another significant patent by Feuerherd involves an optical recording medium. This medium comprises a support material and a light-absorbing layer made from a soluble mixture of a thermoplastic binder and at least one dye. The thermoplastic binder is a phenol-aldehyde resin with an average molecular weight greater than 300, which is soluble in an alcohol with a boiling point of less than 200 degrees Celsius.

Career Highlights

Throughout his career, Feuerherd has worked with prominent companies, including BASF Aktiengesellschaft. His experience in these organizations has contributed to his expertise in developing advanced optical materials.

Collaborations

Feuerherd has collaborated with notable colleagues, including Karl-Heinz Koenig and Heinz-Guenter Oeser. These collaborations have likely enriched his work and led to innovative advancements in the field.

Conclusion

Karl-Heinz Feuerherd's contributions to optical materials through his patents demonstrate his innovative spirit and technical expertise. His work continues to influence the development of advanced optical devices and materials.

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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