Steffen Kelch

This inventor holds 24 USPTO granted patents and 8 published patent applications and 27 EPO patents, primarily in Polyurethane Compositions. Top assignees: Sika Technology Ag, Empa Eidgenossische Materialprufungs-Und Forschungsanstalt, Galderma Research & Development. Active years: 2012-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Steffen Kelch. Retrieved from https://idiyas.com/inventor/steffen-kelch

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

Calculating rank

USPTO Granted Patents = 24 (Patent Applications = 8)

% Patents Active = 75.0

EPO Patents = 27 (Patent Applications = 55)

Average Co-Inventor Count = 2.7

ph-index = 4

Forward Citations = 35(Granted Patents)

Location History:

Oberenstringen, CH (2017)
Oberengstringen, CH (2012 - 2024)

Company Filing History:

Empa Eidgenossische Materialprufungs-Und Forschungsanstalt

patents

1 out of 222

Galderma Research & Development

patents

4. 1 out of 74

Gkss-Forschungszentrum Geesthacht Gmbh

patents

where one patent can have more than one assignee

Years Active: 2012-2026

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Areas of Expertise:

Polyurethane Adhesive

Hydrophobic Composition

Structural Adhesive

Two-Component Composition

Curable Composition

Polymer Concrete

Curing Agent

Shape Memory Polymer

Conductive Mortar

Epoxy Resin

Grouting Mortar

Polyurea Composition

24 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12753319 - Method for producing a laminate of wood and cementitious compositions (2026-10-06),

2. 12486350 - Two-component polyurethane composition with a high degree of hydrophobicity and adjustable pot life (2025-12-02),

3. 12304862 - Conductive mortar (2025-05-20),

4. 12116316 - Slag-containing polymer concrete and grouting mortar (2024-10-15),

5. 12037288 - Polyurethane-based polymer concretes and grouting mortars (2024-07-16),

6. 11795354 - Epoxy resin adhesive with high compressive strength (2023-10-24),

7. 11680131 - Two-component polyurethane composition (2023-06-20),

8. 11149106 - Two-component polyurethane adhesive having substantially temperature-independent mechanical properties and high strength (2021-10-19),

9. 10899926 - Curable composition (2021-01-26),

10. 10563103 - Hydrophobic and highly elastic two-component polyurethane composition having mechanical properties and adhesive properties not dependent on temperature (2020-02-18),

11. 10428252 - Two-component composition (2019-10-01),

12. 10189938 - Polyurea composition (2019-01-29),

13. 10059863 - Structural polyurethane adhesive (2018-08-28),

14. 9914862 - Structural polyurethane adhesive (2018-03-13),

15. 9896609 - Two component polyurethane composition (2018-02-20),

Title: Innovations of Steffen Kelch in Polymer Concrete

Introduction

Steffen Kelch, based in Oberengstringen, Switzerland, is a prolific inventor with a significant portfolio consisting of 21 patents. His innovative work primarily focuses on the development of advanced materials in the construction industry, particularly in the realm of polymer concrete.

Latest Patents

Among his most recent inventions are two notable patents that stand out in the field of construction materials. The first is a "Slag-containing polymer concrete and grouting mortar," which features a curable binder composition that includes at least one organic binder selected from epoxy resins and curing agents, along with polyisocyanates and polyols. Notably, this formulation incorporates at least 50% by weight of slag based on the total weight of the binder composition. The second patent, titled "Polyurethane-based polymer concretes and grouting mortars," also involves a curable binder composition comprising a polyisocyanate and a polyol, with at least 50% by weight of filler in the form of quartz and/or slag. These patents demonstrate Kelch's commitment to enhancing the performance and sustainability of construction materials.

Career Highlights

Throughout his career, Steffen Kelch has contributed to major advancements in material science while working with prominent companies, including Sika Technology AG and Galderma Research & Development. His expertise and innovative spirit have made a substantial impact on the development of contemporary construction solutions.

Collaborations

Kelch has also collaborated with notable colleagues such as Urs Burckhardt and Wolfgang Roock. These partnerships have fostered a dynamic exchange of ideas and have significantly influenced the innovative processes behind Kelch's patents.

Conclusion

Steffen Kelch's contributions to polymer concrete and other related fields underscore his role as an influential inventor in the industry. With a growing patent portfolio and impactful collaborations, he continues to shape the future of construction materials, paving the way for sustainable and high-performance solutions.

Profile summary based on public USPTO records.