Amsterdam, Netherlands

Petrus A Kramer

This inventor holds 20 USPTO granted patents, primarily in Organic Synthesis. Top assignees: Shell Oil Comapny, Shell Internationale Research Maatschappij, B.v.. Active years: 1977-1985.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Petrus A Kramer. Retrieved from https://idiyas.com/inventor/petrus-a-kramer

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


% Patents Active = 100.0

Average Co-Inventor Count = 1.7

ph-index = 4

Forward Citations = 46(Granted Patents)


Company Filing History:


Years Active: 1977-1985

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Areas of Expertise:
Nitrophenylalkanols
Dihalovinyl Compounds
Pyrethroid Intermediates
Cyclopropyl
Trihalomethylation
Lactone
Carbonates
Nitriles
Cyclobutanones
Aldehydes
Phosphites
Organic Chemistry
20 patents (USPTO):Explore Patents

Title: The Innovations of Petrus A. Kramer

Introduction

Petrus A. Kramer, a distinguished inventor based in Amsterdam, Netherlands, has made significant contributions to the field of chemical engineering. With a remarkable portfolio of 20 patents, Kramer's work focuses on novel compounds and processes that have practical applications in various industries.

Latest Patents

Among Kramer's latest innovations is a patented process for the preparation of nitrophenylalkanols. This process involves the hydroxyalkylation of nitrotoluene(s) through a reaction with an aldehyde, utilizing a solid catalyst prepared by depositing an alkali metal compound on an alumina support. Additionally, he has developed a process for creating novel compounds characterized by the formula I, where Y¹ and Y² can represent fluorine, chlorine, or bromine atoms, and R¹ and R² can signify a hydrogen atom or an alkyl group with up to 10 carbon atoms. This innovative approach may convert these compounds into dihalovinylcyclopropane carboxylic acids through the action of a base.

Career Highlights

Kramer's career has seen him contribute his expertise to notable organizations such as Shell Oil Company and Shell Internationale Research Maatschappij B.V. His work at these institutions not only showcases his technical skills but also his capacity for innovation in a corporate environment.

Collaborations

Throughout his career, Kramer has collaborated with esteemed colleagues including Pieter A. Verbrugge and Helena Austermuhle-Bertola. These collaborations have undoubtedly enriched his research and extended the impact of his patented innovations.

Conclusion

Petrus A. Kramer stands out as a remarkable inventor whose contributions to chemical processes have potential applications across various industries. With 20 patents to his name, his innovative approaches continue to push the boundaries of science and technology, promising a future filled with further advancements.

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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