Karen L. Hanson

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Youngstown, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Low biopersistence inorganic fiber free of crystalline silica
- Patent number 12,122,704
- Issue date Oct 22, 2024
- Unifrax I LLC
- Donghui Zhao
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Low biopersistence inorganic fiber free of crystalline silica
- Patent number 11,203,551
- Issue date Dec 21, 2021
- Unifrax I LLC
- Donghui Zhao
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Inorganic fiber
- Patent number 10,023,491
- Issue date Jul 17, 2018
- Unifrax I LLC
- Donghui Zhao
- C03 - GLASS MINERAL OR SLAG WOOL

Patents Applicationslast 30 patents

Information Patent Application
LOW BIO-PERSISTENT HIGH TEMPERATURE RESISTANT INORGANIC FIBERS
- Publication number 20220234944
- Publication date Jul 28, 2022
- UNIFRAX I LLC
- Donghui ZHAO
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
CRYSTALLINE SILICA FREE LOW BIOPERSISTENCE INORGANIC FIBER
- Publication number 20220064071
- Publication date Mar 3, 2022
- UNIFRAX I LLC
- Donghui ZHAO
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
Crystalline Silica Free Low Biopersistence Inorganic Fiber
- Publication number 20190106359
- Publication date Apr 11, 2019
- UNIFRAX I LLC
- Donghui ZHAO
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
INORGANIC FIBER
- Publication number 20170203999
- Publication date Jul 20, 2017
- UNIFRAX I LLC
- Donghui ZHAO
- C03 - GLASS MINERAL OR SLAG WOOL