Henry Sleijster

This inventor holds 16 USPTO granted patents and 12 published patent applications, plus 15 CIPO patents and 14 EPO patents, primarily in Polymer Processing. Top assignees: Borealis Ag, Borealis Gmbh. Active years: 2019-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Henry Sleijster. Retrieved from https://idiyas.com/inventor/henry-sleijster

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

Calculating rank

USPTO Granted Patents = 16 (Patent Applications = 12)

% Patents Active = 93.8

CIPO Patents = 15 (Patent Applications = 10)

EPO Patents = 14 (Patent Applications = 29)

Average Co-Inventor Count = 5.5

ph-index = 1

Forward Citations = 8(Granted Patents)

Location History:

Echt, NL (2019 - 2020)
Geleen, NL (2021 - 2022)
Sittard-Geleen, NL (2022 - 2024)

Company Filing History:

Years Active: 2019-2026

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Areas of Expertise:

Polymerization

Olefins

Polyolefins

Blending

Screening Assembly

Heat Deactivation

Copolymers

Hydrocarbon Recovery

Effluent Processing

Temperature Improvement

Conveying System

16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12780966 - Ethylene copolymers with improved melting and glass transition temperature (2026-11-03),

2. 12723107 - Polymerization process and arrangement (2026-09-01),

3. 12599883 - Screening assembly and process for screening polymer from an effluent stream at reduced levels of polymer entrainment (2026-04-14),

4. 12577335 - Process for the polymerization of olefins in solution comprising deactivating the polymerization catalyst by heat (2026-03-17),

5. 12540206 - Ethylene copolymers with improved melting and glass transition temperature (2026-02-03),

6. 12194398 - Screening assembly and process for screening polymer from an effluent stream at reduced levels of polymer entrainment (2025-01-14),

7. 12139565 - Polymerization process (2024-11-12),

8. 12048921 - Method for transporting polyolefin particles in a polymer conveying system (2024-07-30),

9. 11512157 - Method of recovering olefins in a solution polymerisation process (2022-11-29),

10. 11440983 - Phase-stabilized ethylene alpha olefin copolymerization process (2022-09-13),

11. 11149096 - Method of recovering olefins in a solution polymerization process (2021-10-19),

12. 10829610 - Process and apparatus for in-line blending of polymers (2020-11-10),

13. 10759880 - Process for recovering hydrocarbons in a solution polymerisation process (2020-09-01),

14. 10604595 - Process for withdrawing polyolefins (2020-03-31),

15. 10597472 - In-line blending process (2020-03-24),

Title: Henry Sleijster: Innovator in Polymer Technology

Introduction

Henry Sleijster is a prominent inventor based in Echt, Netherlands, known for his significant contributions to polymer technology. With a total of 11 patents to his name, he has made remarkable advancements in the field, particularly in the processes related to polymer separation and polymerization.

Latest Patents

Sleijster's latest patents include a groundbreaking invention titled "Screening assembly and process for screening polymer from an effluent stream at reduced levels of polymer entrainment." This invention focuses on a screening assembly that effectively separates an effluent stream containing polymers and hydrocarbons into a polymer-rich stream and a polymer-lean vapor stream. The assembly is designed with a separating device that includes multiple outlets for efficient withdrawal of both streams.

Another notable patent is related to a "Polymerization process," which outlines a method for polymerizing olefin monomers and comonomers in the presence of a catalyst. This process involves several separation steps to isolate hydrocarbons and polymers, ensuring a high-quality output of the desired polymer solution.

Career Highlights

Henry Sleijster is currently employed at Borealis AG, a leading company in the field of polyolefins and innovative solutions. His work at Borealis has allowed him to develop and refine his patented technologies, contributing to the company's reputation for excellence in polymer production.

Collaborations

Sleijster has collaborated with notable colleagues, including Mohammad Al-Haj Ali and Samuli Zitting. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas within the field of polymer technology.

Conclusion

Henry Sleijster's contributions to polymer technology through his patents and work at Borealis AG highlight his role as a key innovator in the industry. His inventions not only advance the field but also pave the way for future developments in polymer processing and applications.

Profile summary based on public USPTO records.