Everardus J Leenderts

This inventor holds 5 USPTO granted patents. Top assignees: Gist-Brocades N.v., Shell Internationale Research Maatschappij, B.v.. Active years: 1982-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Everardus J Leenderts. Retrieved from https://idiyas.com/inventor/everardus-j-leenderts

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

Calculating rank

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 4.3

ph-index = 3

Forward Citations = 19(Granted Patents)

Company Filing History:

Shell Internationale Research Maatschappij, B.v.

patents

Years Active: 1982-1994

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5 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5359058 - Cephem derivatives (1994-10-25),

2. 5164519 - Process for the separation of R and S-2,2-R.sub.1,R.sub.2 (1992-11-17),

3. 5164494 - Cephalosporin derivatives (1992-11-17),

4. 4921954 - Process for the preparation of cephem compounds (1990-05-01),

5. 4318852 - Sodium amoxicillin solvate (1982-03-09),

Title: The Innovative Contributions of Everardus J Leenderts

Introduction

Everardus J Leenderts is a notable inventor based in Rhoon, Netherlands. He has made significant contributions to the field of pharmaceuticals, particularly in the development of cephalosporin compounds. With a total of five patents to his name, Leenderts has demonstrated a commitment to innovation and research.

Latest Patents

Leenderts' latest patents include groundbreaking work on cephem derivatives. These compounds are characterized by a cephalosporin structure that is substituted in the 7-position with a (cyclo)alkylideneammonio group. This innovation is particularly useful as intermediates in pharmaceutical applications. Another significant patent involves the preparation of 7-beta-amino-3-substituted methyl-3-cephem-4-carboxylic acid derivatives. This includes new intermediates that comprise 7-beta-(cyclo)alkylideneammonio-3-halomethyl-3-cephem-4-carboxylic acid derivatives, showcasing his expertise in chemical synthesis.

Career Highlights

Throughout his career, Leenderts has worked with prominent companies such as Gist-Brocades N.V. and Shell Internationale Research Maatschappij B.V. His experience in these organizations has allowed him to refine his skills and contribute to significant advancements in pharmaceutical research.

Collaborations

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]