Winfried Wichelhaus

This inventor holds 14 USPTO granted patents. Top assignees: Henkel Ag & Company, Kgaa, Kenkel Kommanditgesellschaft Auf Aktien. Active years: 1985-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Winfried Wichelhaus. Retrieved from https://idiyas.com/inventor/winfried-wichelhaus

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

USPTO Granted Patents = 14

% Patents Active = 92.9

Average Co-Inventor Count = 3.4

ph-index = 8

Forward Citations = 165(Granted Patents)

Location History:

Mettmann, DE (1985 - 2002)
Wuelfrath, DE (2002)

Company Filing History:

13 out of 4,540

Henkel Ag & Company, Kgaa

patents

1 out of 1

Kenkel Kommanditgesellschaft Auf Aktien

patent

Years Active: 1985-2002

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6479103 - Conductive organic coatings (2002-11-12),

2. 6447662 - Process for phosphatizing, rerinsing and cathodic electro-dipcoating (2002-09-10),

3. 6395105 - Phosphating process with a metalliferous re-rinsing stage (2002-05-28),

4. 6090224 - Phosphating process with a copper-containing re-rinsing stage (2000-07-18),

5. 5484548 - Low-foam scouring powder (1996-01-16),

6. 4888120 - Water-based drilling and well-servicing fluids with swellable, synthetic (1989-12-19),

7. 4861516 - Laundry pretreatment composition for oily and greasy soil (1989-08-29),

8. 4861510 - Porous layer silicate/sodium sulfate agglomerate (1989-08-29),

9. 4846990 - Fabric-softening detergent (1989-07-11),

10. 4839066 - Fabric-softening detergent (1989-06-13),

11. 4774004 - Process for filtering liquors used in dry cleaning (1988-09-27),

12. 4737306 - Layered silicates of limited swelling power, a process for their (1988-04-12),

13. 4695396 - Two-component alkaline cleaning compositions and methods of preparing (1987-09-22),

14. 4528149 - Hollow spherical bodies of solidified alkali metal silicate (1985-07-09),

Title: The Innovative Contributions of Winfried Wichelhaus

Introduction

Winfried Wichelhaus is a notable inventor based in Mettmann, Germany. He has made significant contributions to the field of coatings and surface treatments, holding a total of 14 patents. His work focuses on developing advanced materials that enhance the performance and durability of metal surfaces.

Latest Patents

Wichelhaus's latest patents include innovative solutions such as conductive organic coatings. These coatings are designed to be conductive and weldable, providing anti-corrosive properties based on (blocked) polyurethane resins and epoxy resins. They are particularly suitable for coating metal surfaces, especially sheet steel in the coil coating process. These compositions are characterized by a low stoving temperature, a significant reduction in white rust on galvanized sheet steel during salt spray tests, and improved adhesion of the organic coating to the metallic substrate. Additionally, these coatings can achieve adequate corrosion protection even with a thin chromium coating, making them effective in Cr-free pretreatment processes. Furthermore, sheet metal coated in this manner can be spot welded using conventional processes.

Another notable patent involves a process for phosphatizing, rerinsing, and cathodic electro-dipcoating. This process is aimed at pretreating surfaces made from steel, galvanized steel, aluminum, and their alloys. It consists of three stages: first, phosphating is performed using a low-nickel zinc phosphating solution; second, the

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]