Liyan Ma

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King of Prussia, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Roofing shingles, tiles and shakes
- Patent number 11,326,348
- Issue date May 10, 2022
- CertainTeed LLC
- Choung-Houng Lai
- B32 - LAYERED PRODUCTS
Information Patent Grant
Roofing shingles, tiles and shakes
- Patent number 10,837,176
- Issue date Nov 17, 2020
- CertainTeed LLC
- Choung-Houng Lai
- B32 - LAYERED PRODUCTS

Patents Applicationslast 30 patents

Information Patent Application
Roofing Shingles, Tiles and Shakes
- Publication number 20230029878
- Publication date Feb 2, 2023
- CertainTeed LLC
- Choung-Houng Lai
- E04 - BUILDING
Information Patent Application
Roofing Shingles, Tiles and Shakes
- Publication number 20210071422
- Publication date Mar 11, 2021
- CertainTeed LLC
- Choung-Houng Lai
- B32 - LAYERED PRODUCTS
Information Patent Application
Roofing Shingles, Tiles and Shakes
- Publication number 20180187419
- Publication date Jul 5, 2018
- CertainTeed Corporation
- Choung-Houng Lai
- B32 - LAYERED PRODUCTS