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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12747370 B1

PDFFull Text
Date of Patent:
Sep. 29, 2026

Filed:

Nov. 04, 2022

Water based coating composition for wind blades

Applicant:

Hempel A/s, Kgs. Lyngby, DK;

Inventors:

Pablo Luis Bernad, Kgs. Lyngby, DK;

Christina Jung, Kgs. Lyngby, DK;

Craig E. Wood, Kgs. Lyngby, DK;

Assignee:

HEMPEL A/S, Kongens Lyngby, DK;

Attorney:

Ballard Spahr.LLP

Primary Examiner:

Courtney D Heinle

Assistant Examiner:

Art undefined Golik

Int. Cl.
CPC ...
C09D 175/04 (2006.01); F03D 1/06 (2006.01); F04D 29/02 (2006.01); C09D 175/06 (2006.01); C09D 175/08 (2006.01); C09D 175/10 (2006.01); C09D 175/12 (2006.01); F01D 5/28 (2006.01);
U.S. Cl.
CPC ...
C09D 175/04 (2013.01); F03D 1/0675 (2013.01); F04D 29/02 (2013.01); C09D 175/06 (2013.01); C09D 175/08 (2013.01); C09D 175/10 (2013.01); C09D 175/12 (2013.01); F01D 5/286 (2013.01); F01D 5/288 (2013.01); F04D 29/023 (2013.01); F04D 29/026 (2013.01); F05B 2230/90 (2013.01); F05B 2260/95 (2013.01); F05B 2280/4003 (2013.01); F05B 2280/4011 (2013.01); F05B 2280/6011 (2013.01); F05D 2230/90 (2013.01); F05D 2260/95 (2013.01); F05D 2300/48 (2013.01);
Abstract

Described herein is a wind blade comprising an outer surface, and at least one coating layer applied to a part of the outer surface, the at least one coating layer including a first coating layer comprising: a) a primary composition comprising one or more aqueous dispersion of an aliphatic polyurethane; wherein said aqueous dispersion has a particle size characterized by a D50 (median) value below 1000 nm; and optionally b) a secondary composition comprising one or more polyisocyanates; wherein when the coating composition comprises b) then said aqueous dispersion in a) is present in an amount of at least 5 times the amount of said polyisocyanate in b) based on weight; when b) is absent then the coating composition is a one-component composition.

Find Patent Forward Citations

Bernad, Pablo. (2026). Water based coating composition for wind blades (U.S. Patent No. 12747370). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12747370

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

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